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|| (typeof obj.pause === 'function' && typeof obj.resume === 'function')) &&\n      (!obj._writableState ||\n        ((_obj$_readableState = obj._readableState) === null || _obj$_readableState === undefined\n          ? undefined\n          : _obj$_readableState.readable) !== false) &&\n      // Duplex\n      (!obj._writableState || obj._readableState)\n    ) // Writable has .pipe.\n  )\n}\n\nfunction isWritableNodeStream(obj) {\n  var _obj$_writableState\n  return !!(\n    (\n      obj &&\n      typeof obj.write === 'function' &&\n      typeof obj.on === 'function' &&\n      (!obj._readableState ||\n        ((_obj$_writableState = obj._writableState) === null || _obj$_writableState === undefined\n          ? undefined\n          : _obj$_writableState.writable) !== false)\n    ) // Duplex\n  )\n}\n\nfunction isDuplexNodeStream(obj) {\n  return !!(\n    obj &&\n    typeof obj.pipe === 'function' &&\n    obj._readableState &&\n    typeof obj.on === 'function' &&\n    typeof obj.write === 'function'\n  )\n}\nfunction isNodeStream(obj) {\n  return (\n    obj &&\n    (obj._readableState ||\n      obj._writableState ||\n      (typeof obj.write === 'function' && typeof obj.on === 'function') ||\n      (typeof obj.pipe === 'function' && typeof obj.on === 'function'))\n  )\n}\nfunction isReadableStream(obj) {\n  return !!(\n    obj &&\n    !isNodeStream(obj) &&\n    typeof obj.pipeThrough === 'function' &&\n    typeof obj.getReader === 'function' &&\n    typeof obj.cancel === 'function'\n  )\n}\nfunction isWritableStream(obj) {\n  return !!(obj && !isNodeStream(obj) && typeof obj.getWriter === 'function' && typeof obj.abort === 'function')\n}\nfunction isTransformStream(obj) {\n  return !!(obj && !isNodeStream(obj) && typeof obj.readable === 'object' && typeof obj.writable === 'object')\n}\nfunction isWebStream(obj) {\n  return isReadableStream(obj) || isWritableStream(obj) || isTransformStream(obj)\n}\nfunction isIterable(obj, isAsync) {\n  if (obj == null) return false\n  if (isAsync === true) return typeof obj[SymbolAsyncIterator] === 'function'\n  if (isAsync === false) return typeof obj[SymbolIterator] === 'function'\n  return typeof obj[SymbolAsyncIterator] === 'function' || typeof obj[SymbolIterator] === 'function'\n}\nfunction isDestroyed(stream) {\n  if (!isNodeStream(stream)) return null\n  const wState = stream._writableState\n  const rState = stream._readableState\n  const state = wState || rState\n  return !!(stream.destroyed || stream[kIsDestroyed] || (state !== null && state !== undefined && state.destroyed))\n}\n\n// Have been end():d.\nfunction isWritableEnded(stream) {\n  if (!isWritableNodeStream(stream)) return null\n  if (stream.writableEnded === true) return true\n  const wState = stream._writableState\n  if (wState !== null && wState !== undefined && wState.errored) return false\n  if (typeof (wState === null || wState === undefined ? undefined : wState.ended) !== 'boolean') return null\n  return wState.ended\n}\n\n// Have emitted 'finish'.\nfunction isWritableFinished(stream, strict) {\n  if (!isWritableNodeStream(stream)) return null\n  if (stream.writableFinished === true) return true\n  const wState = stream._writableState\n  if (wState !== null && wState !== undefined && wState.errored) return false\n  if (typeof (wState === null || wState === undefined ? undefined : wState.finished) !== 'boolean') return null\n  return !!(wState.finished || (strict === false && wState.ended === true && wState.length === 0))\n}\n\n// Have been push(null):d.\nfunction isReadableEnded(stream) {\n  if (!isReadableNodeStream(stream)) return null\n  if (stream.readableEnded === true) return true\n  const rState = stream._readableState\n  if (!rState || rState.errored) return false\n  if (typeof (rState === null || rState === undefined ? undefined : rState.ended) !== 'boolean') return null\n  return rState.ended\n}\n\n// Have emitted 'end'.\nfunction isReadableFinished(stream, strict) {\n  if (!isReadableNodeStream(stream)) return null\n  const rState = stream._readableState\n  if (rState !== null && rState !== undefined && rState.errored) return false\n  if (typeof (rState === null || rState === undefined ? undefined : rState.endEmitted) !== 'boolean') return null\n  return !!(rState.endEmitted || (strict === false && rState.ended === true && rState.length === 0))\n}\nfunction isReadable(stream) {\n  if (stream && stream[kIsReadable] != null) return stream[kIsReadable]\n  if (typeof (stream === null || stream === undefined ? undefined : stream.readable) !== 'boolean') return null\n  if (isDestroyed(stream)) return false\n  return isReadableNodeStream(stream) && stream.readable && !isReadableFinished(stream)\n}\nfunction isWritable(stream) {\n  if (stream && stream[kIsWritable] != null) return stream[kIsWritable]\n  if (typeof (stream === null || stream === undefined ? undefined : stream.writable) !== 'boolean') return null\n  if (isDestroyed(stream)) return false\n  return isWritableNodeStream(stream) && stream.writable && !isWritableEnded(stream)\n}\nfunction isFinished(stream, opts) {\n  if (!isNodeStream(stream)) {\n    return null\n  }\n  if (isDestroyed(stream)) {\n    return true\n  }\n  if ((opts === null || opts === undefined ? undefined : opts.readable) !== false && isReadable(stream)) {\n    return false\n  }\n  if ((opts === null || opts === undefined ? undefined : opts.writable) !== false && isWritable(stream)) {\n    return false\n  }\n  return true\n}\nfunction isWritableErrored(stream) {\n  var _stream$_writableStat, _stream$_writableStat2\n  if (!isNodeStream(stream)) {\n    return null\n  }\n  if (stream.writableErrored) {\n    return stream.writableErrored\n  }\n  return (_stream$_writableStat =\n    (_stream$_writableStat2 = stream._writableState) === null || _stream$_writableStat2 === undefined\n      ? undefined\n      : _stream$_writableStat2.errored) !== null && _stream$_writableStat !== undefined\n    ? _stream$_writableStat\n    : null\n}\nfunction isReadableErrored(stream) {\n  var _stream$_readableStat, _stream$_readableStat2\n  if (!isNodeStream(stream)) {\n    return null\n  }\n  if (stream.readableErrored) {\n    return stream.readableErrored\n  }\n  return (_stream$_readableStat =\n    (_stream$_readableStat2 = stream._readableState) === null || _stream$_readableStat2 === undefined\n      ? undefined\n      : _stream$_readableStat2.errored) !== null && _stream$_readableStat !== undefined\n    ? _stream$_readableStat\n    : null\n}\nfunction isClosed(stream) {\n  if (!isNodeStream(stream)) {\n    return null\n  }\n  if (typeof stream.closed === 'boolean') {\n    return stream.closed\n  }\n  const wState = stream._writableState\n  const rState = stream._readableState\n  if (\n    typeof (wState === null || wState === undefined ? undefined : wState.closed) === 'boolean' ||\n    typeof (rState === null || rState === undefined ? undefined : rState.closed) === 'boolean'\n  ) {\n    return (\n      (wState === null || wState === undefined ? undefined : wState.closed) ||\n      (rState === null || rState === undefined ? undefined : rState.closed)\n    )\n  }\n  if (typeof stream._closed === 'boolean' && isOutgoingMessage(stream)) {\n    return stream._closed\n  }\n  return null\n}\nfunction isOutgoingMessage(stream) {\n  return (\n    typeof stream._closed === 'boolean' &&\n    typeof stream._defaultKeepAlive === 'boolean' &&\n    typeof stream._removedConnection === 'boolean' &&\n    typeof stream._removedContLen === 'boolean'\n  )\n}\nfunction isServerResponse(stream) {\n  return typeof stream._sent100 === 'boolean' && isOutgoingMessage(stream)\n}\nfunction isServerRequest(stream) {\n  var _stream$req\n  return (\n    typeof stream._consuming === 'boolean' &&\n    typeof stream._dumped === 'boolean' &&\n    ((_stream$req = stream.req) === null || _stream$req === undefined ? undefined : _stream$req.upgradeOrConnect) ===\n      undefined\n  )\n}\nfunction willEmitClose(stream) {\n  if (!isNodeStream(stream)) return null\n  const wState = stream._writableState\n  const rState = stream._readableState\n  const state = wState || rState\n  return (\n    (!state && isServerResponse(stream)) || !!(state && state.autoDestroy && state.emitClose && state.closed === false)\n  )\n}\nfunction isDisturbed(stream) {\n  var _stream$kIsDisturbed\n  return !!(\n    stream &&\n    ((_stream$kIsDisturbed = stream[kIsDisturbed]) !== null && _stream$kIsDisturbed !== undefined\n      ? _stream$kIsDisturbed\n      : stream.readableDidRead || stream.readableAborted)\n  )\n}\nfunction isErrored(stream) {\n  var _ref,\n    _ref2,\n    _ref3,\n    _ref4,\n    _ref5,\n    _stream$kIsErrored,\n    _stream$_readableStat3,\n    _stream$_writableStat3,\n    _stream$_readableStat4,\n    _stream$_writableStat4\n  return !!(\n    stream &&\n    ((_ref =\n      (_ref2 =\n        (_ref3 =\n          (_ref4 =\n            (_ref5 =\n              (_stream$kIsErrored = stream[kIsErrored]) !== null && _stream$kIsErrored !== undefined\n                ? _stream$kIsErrored\n                : stream.readableErrored) !== null && _ref5 !== undefined\n              ? _ref5\n              : stream.writableErrored) !== null && _ref4 !== undefined\n            ? _ref4\n            : (_stream$_readableStat3 = stream._readableState) === null || _stream$_readableStat3 === undefined\n            ? undefined\n            : _stream$_readableStat3.errorEmitted) !== null && _ref3 !== undefined\n          ? _ref3\n          : (_stream$_writableStat3 = stream._writableState) === null || _stream$_writableStat3 === undefined\n          ? undefined\n          : _stream$_writableStat3.errorEmitted) !== null && _ref2 !== undefined\n        ? _ref2\n        : (_stream$_readableStat4 = stream._readableState) === null || _stream$_readableStat4 === undefined\n        ? undefined\n        : _stream$_readableStat4.errored) !== null && _ref !== undefined\n      ? _ref\n      : (_stream$_writableStat4 = stream._writableState) === null || _stream$_writableStat4 === undefined\n      ? undefined\n      : _stream$_writableStat4.errored)\n  )\n}\nmodule.exports = {\n  isDestroyed,\n  kIsDestroyed,\n  isDisturbed,\n  kIsDisturbed,\n  isErrored,\n  kIsErrored,\n  isReadable,\n  kIsReadable,\n  kIsClosedPromise,\n  kControllerErrorFunction,\n  kIsWritable,\n  isClosed,\n  isDuplexNodeStream,\n  isFinished,\n  isIterable,\n  isReadableNodeStream,\n  isReadableStream,\n  isReadableEnded,\n  isReadableFinished,\n  isReadableErrored,\n  isNodeStream,\n  isWebStream,\n  isWritable,\n  isWritableNodeStream,\n  isWritableStream,\n  isWritableEnded,\n  isWritableFinished,\n  isWritableErrored,\n  isServerRequest,\n  isServerResponse,\n  willEmitClose,\n  isTransformStream\n}\n","var toString = {}.toString;\n\nmodule.exports = Array.isArray || function (arr) {\n  return toString.call(arr) == '[object Array]';\n};\n","'use strict'\n\nconst { pipeline } = require('./pipeline')\nconst Duplex = require('./duplex')\nconst { destroyer } = require('./destroy')\nconst {\n  isNodeStream,\n  isReadable,\n  isWritable,\n  isWebStream,\n  isTransformStream,\n  isWritableStream,\n  isReadableStream\n} = require('./utils')\nconst {\n  AbortError,\n  codes: { ERR_INVALID_ARG_VALUE, ERR_MISSING_ARGS }\n} = require('../../ours/errors')\nconst eos = require('./end-of-stream')\nmodule.exports = function compose(...streams) {\n  if (streams.length === 0) {\n    throw new ERR_MISSING_ARGS('streams')\n  }\n  if (streams.length === 1) {\n    return Duplex.from(streams[0])\n  }\n  const orgStreams = [...streams]\n  if (typeof streams[0] === 'function') {\n    streams[0] = Duplex.from(streams[0])\n  }\n  if (typeof streams[streams.length - 1] === 'function') {\n    const idx = streams.length - 1\n    streams[idx] = Duplex.from(streams[idx])\n  }\n  for (let n = 0; n < streams.length; ++n) {\n    if (!isNodeStream(streams[n]) && !isWebStream(streams[n])) {\n      // TODO(ronag): Add checks for non streams.\n      continue\n    }\n    if (\n      n < streams.length - 1 &&\n      !(isReadable(streams[n]) || isReadableStream(streams[n]) || isTransformStream(streams[n]))\n    ) {\n      throw new ERR_INVALID_ARG_VALUE(`streams[${n}]`, orgStreams[n], 'must be readable')\n    }\n    if (n > 0 && !(isWritable(streams[n]) || isWritableStream(streams[n]) || isTransformStream(streams[n]))) {\n      throw new ERR_INVALID_ARG_VALUE(`streams[${n}]`, orgStreams[n], 'must be writable')\n    }\n  }\n  let ondrain\n  let onfinish\n  let onreadable\n  let onclose\n  let d\n  function onfinished(err) {\n    const cb = onclose\n    onclose = null\n    if (cb) {\n      cb(err)\n    } else if (err) {\n      d.destroy(err)\n    } else if (!readable && !writable) {\n      d.destroy()\n    }\n  }\n  const head = streams[0]\n  const tail = pipeline(streams, onfinished)\n  const writable = !!(isWritable(head) || isWritableStream(head) || isTransformStream(head))\n  const readable = !!(isReadable(tail) || isReadableStream(tail) || isTransformStream(tail))\n\n  // TODO(ronag): Avoid double buffering.\n  // Implement Writable/Readable/Duplex traits.\n  // See, https://github.com/nodejs/node/pull/33515.\n  d = new Duplex({\n    // TODO (ronag): highWaterMark?\n    writableObjectMode: !!(head !== null && head !== undefined && head.writableObjectMode),\n    readableObjectMode: !!(tail !== null && tail !== undefined && tail.readableObjectMode),\n    writable,\n    readable\n  })\n  if (writable) {\n    if (isNodeStream(head)) {\n      d._write = function (chunk, encoding, callback) {\n        if (head.write(chunk, encoding)) {\n          callback()\n        } else {\n          ondrain = callback\n        }\n      }\n      d._final = function (callback) {\n        head.end()\n        onfinish = callback\n      }\n      head.on('drain', function () {\n        if (ondrain) {\n          const cb = ondrain\n          ondrain = null\n          cb()\n        }\n      })\n    } else if (isWebStream(head)) {\n      const writable = isTransformStream(head) ? head.writable : head\n      const writer = writable.getWriter()\n      d._write = async function (chunk, encoding, callback) {\n        try {\n          await writer.ready\n          writer.write(chunk).catch(() => {})\n          callback()\n        } catch (err) {\n          callback(err)\n        }\n      }\n      d._final = async function (callback) {\n        try {\n          await writer.ready\n          writer.close().catch(() => {})\n          onfinish = callback\n        } catch (err) {\n          callback(err)\n        }\n      }\n    }\n    const toRead = isTransformStream(tail) ? tail.readable : tail\n    eos(toRead, () => {\n      if (onfinish) {\n        const cb = onfinish\n        onfinish = null\n        cb()\n      }\n    })\n  }\n  if (readable) {\n    if (isNodeStream(tail)) {\n      tail.on('readable', function () {\n        if (onreadable) {\n          const cb = onreadable\n          onreadable = null\n          cb()\n        }\n      })\n      tail.on('end', function () {\n        d.push(null)\n      })\n      d._read = function () {\n        while (true) {\n          const buf = tail.read()\n          if (buf === null) {\n            onreadable = d._read\n            return\n          }\n          if (!d.push(buf)) {\n            return\n          }\n        }\n      }\n    } else if (isWebStream(tail)) {\n      const readable = isTransformStream(tail) ? tail.readable : tail\n      const reader = readable.getReader()\n      d._read = async function () {\n        while (true) {\n          try {\n            const { value, done } = await reader.read()\n            if (!d.push(value)) {\n              return\n            }\n            if (done) {\n              d.push(null)\n              return\n            }\n          } catch {\n            return\n          }\n        }\n      }\n    }\n  }\n  d._destroy = function (err, callback) {\n    if (!err && onclose !== null) {\n      err = new AbortError()\n    }\n    onreadable = null\n    ondrain = null\n    onfinish = null\n    if (onclose === null) {\n      callback(err)\n    } else {\n      onclose = callback\n      if (isNodeStream(tail)) {\n        destroyer(tail, err)\n      }\n    }\n  }\n  return d\n}\n","/* eslint jsdoc/require-jsdoc: \"error\" */\n\n'use strict'\n\nconst {\n  ArrayIsArray,\n  ArrayPrototypeIncludes,\n  ArrayPrototypeJoin,\n  ArrayPrototypeMap,\n  NumberIsInteger,\n  NumberIsNaN,\n  NumberMAX_SAFE_INTEGER,\n  NumberMIN_SAFE_INTEGER,\n  NumberParseInt,\n  ObjectPrototypeHasOwnProperty,\n  RegExpPrototypeExec,\n  String,\n  StringPrototypeToUpperCase,\n  StringPrototypeTrim\n} = require('../ours/primordials')\nconst {\n  hideStackFrames,\n  codes: { ERR_SOCKET_BAD_PORT, ERR_INVALID_ARG_TYPE, ERR_INVALID_ARG_VALUE, ERR_OUT_OF_RANGE, ERR_UNKNOWN_SIGNAL }\n} = require('../ours/errors')\nconst { normalizeEncoding } = require('../ours/util')\nconst { isAsyncFunction, isArrayBufferView } = require('../ours/util').types\nconst signals = {}\n\n/**\n * @param {*} value\n * @returns {boolean}\n */\nfunction isInt32(value) {\n  return value === (value | 0)\n}\n\n/**\n * @param {*} value\n * @returns {boolean}\n */\nfunction isUint32(value) {\n  return value === value >>> 0\n}\nconst octalReg = /^[0-7]+$/\nconst modeDesc = 'must be a 32-bit unsigned integer or an octal string'\n\n/**\n * Parse and validate values that will be converted into mode_t (the S_*\n * constants). Only valid numbers and octal strings are allowed. They could be\n * converted to 32-bit unsigned integers or non-negative signed integers in the\n * C++ land, but any value higher than 0o777 will result in platform-specific\n * behaviors.\n * @param {*} value Values to be validated\n * @param {string} name Name of the argument\n * @param {number} [def] If specified, will be returned for invalid values\n * @returns {number}\n */\nfunction parseFileMode(value, name, def) {\n  if (typeof value === 'undefined') {\n    value = def\n  }\n  if (typeof value === 'string') {\n    if (RegExpPrototypeExec(octalReg, value) === null) {\n      throw new ERR_INVALID_ARG_VALUE(name, value, modeDesc)\n    }\n    value = NumberParseInt(value, 8)\n  }\n  validateUint32(value, name)\n  return value\n}\n\n/**\n * @callback validateInteger\n * @param {*} value\n * @param {string} name\n * @param {number} [min]\n * @param {number} [max]\n * @returns {asserts value is number}\n */\n\n/** @type {validateInteger} */\nconst validateInteger = hideStackFrames((value, name, min = NumberMIN_SAFE_INTEGER, max = NumberMAX_SAFE_INTEGER) => {\n  if (typeof value !== 'number') throw new ERR_INVALID_ARG_TYPE(name, 'number', value)\n  if (!NumberIsInteger(value)) throw new ERR_OUT_OF_RANGE(name, 'an integer', value)\n  if (value < min || value > max) throw new ERR_OUT_OF_RANGE(name, `>= ${min} && <= ${max}`, value)\n})\n\n/**\n * @callback validateInt32\n * @param {*} value\n * @param {string} name\n * @param {number} [min]\n * @param {number} [max]\n * @returns {asserts value is number}\n */\n\n/** @type {validateInt32} */\nconst validateInt32 = hideStackFrames((value, name, min = -2147483648, max = 2147483647) => {\n  // The defaults for min and max correspond to the limits of 32-bit integers.\n  if (typeof value !== 'number') {\n    throw new ERR_INVALID_ARG_TYPE(name, 'number', value)\n  }\n  if (!NumberIsInteger(value)) {\n    throw new ERR_OUT_OF_RANGE(name, 'an integer', value)\n  }\n  if (value < min || value > max) {\n    throw new ERR_OUT_OF_RANGE(name, `>= ${min} && <= ${max}`, value)\n  }\n})\n\n/**\n * @callback validateUint32\n * @param {*} value\n * @param {string} name\n * @param {number|boolean} [positive=false]\n * @returns {asserts value is number}\n */\n\n/** @type {validateUint32} */\nconst validateUint32 = hideStackFrames((value, name, positive = false) => {\n  if (typeof value !== 'number') {\n    throw new ERR_INVALID_ARG_TYPE(name, 'number', value)\n  }\n  if (!NumberIsInteger(value)) {\n    throw new ERR_OUT_OF_RANGE(name, 'an integer', value)\n  }\n  const min = positive ? 1 : 0\n  // 2 ** 32 === 4294967296\n  const max = 4294967295\n  if (value < min || value > max) {\n    throw new ERR_OUT_OF_RANGE(name, `>= ${min} && <= ${max}`, value)\n  }\n})\n\n/**\n * @callback validateString\n * @param {*} value\n * @param {string} name\n * @returns {asserts value is string}\n */\n\n/** @type {validateString} */\nfunction validateString(value, name) {\n  if (typeof value !== 'string') throw new ERR_INVALID_ARG_TYPE(name, 'string', value)\n}\n\n/**\n * @callback validateNumber\n * @param {*} value\n * @param {string} name\n * @param {number} [min]\n * @param {number} [max]\n * @returns {asserts value is number}\n */\n\n/** @type {validateNumber} */\nfunction validateNumber(value, name, min = undefined, max) {\n  if (typeof value !== 'number') throw new ERR_INVALID_ARG_TYPE(name, 'number', value)\n  if (\n    (min != null && value < min) ||\n    (max != null && value > max) ||\n    ((min != null || max != null) && NumberIsNaN(value))\n  ) {\n    throw new ERR_OUT_OF_RANGE(\n      name,\n      `${min != null ? `>= ${min}` : ''}${min != null && max != null ? ' && ' : ''}${max != null ? `<= ${max}` : ''}`,\n      value\n    )\n  }\n}\n\n/**\n * @callback validateOneOf\n * @template T\n * @param {T} value\n * @param {string} name\n * @param {T[]} oneOf\n */\n\n/** @type {validateOneOf} */\nconst validateOneOf = hideStackFrames((value, name, oneOf) => {\n  if (!ArrayPrototypeIncludes(oneOf, value)) {\n    const allowed = ArrayPrototypeJoin(\n      ArrayPrototypeMap(oneOf, (v) => (typeof v === 'string' ? `'${v}'` : String(v))),\n      ', '\n    )\n    const reason = 'must be one of: ' + allowed\n    throw new ERR_INVALID_ARG_VALUE(name, value, reason)\n  }\n})\n\n/**\n * @callback validateBoolean\n * @param {*} value\n * @param {string} name\n * @returns {asserts value is boolean}\n */\n\n/** @type {validateBoolean} */\nfunction validateBoolean(value, name) {\n  if (typeof value !== 'boolean') throw new ERR_INVALID_ARG_TYPE(name, 'boolean', value)\n}\n\n/**\n * @param {any} options\n * @param {string} key\n * @param {boolean} defaultValue\n * @returns {boolean}\n */\nfunction getOwnPropertyValueOrDefault(options, key, defaultValue) {\n  return options == null || !ObjectPrototypeHasOwnProperty(options, key) ? defaultValue : options[key]\n}\n\n/**\n * @callback validateObject\n * @param {*} value\n * @param {string} name\n * @param {{\n *   allowArray?: boolean,\n *   allowFunction?: boolean,\n *   nullable?: boolean\n * }} [options]\n */\n\n/** @type {validateObject} */\nconst validateObject = hideStackFrames((value, name, options = null) => {\n  const allowArray = getOwnPropertyValueOrDefault(options, 'allowArray', false)\n  const allowFunction = getOwnPropertyValueOrDefault(options, 'allowFunction', false)\n  const nullable = getOwnPropertyValueOrDefault(options, 'nullable', false)\n  if (\n    (!nullable && value === null) ||\n    (!allowArray && ArrayIsArray(value)) ||\n    (typeof value !== 'object' && (!allowFunction || typeof value !== 'function'))\n  ) {\n    throw new ERR_INVALID_ARG_TYPE(name, 'Object', value)\n  }\n})\n\n/**\n * @callback validateDictionary - We are using the Web IDL Standard definition\n *                                of \"dictionary\" here, which means any value\n *                                whose Type is either Undefined, Null, or\n *                                Object (which includes functions).\n * @param {*} value\n * @param {string} name\n * @see https://webidl.spec.whatwg.org/#es-dictionary\n * @see https://tc39.es/ecma262/#table-typeof-operator-results\n */\n\n/** @type {validateDictionary} */\nconst validateDictionary = hideStackFrames((value, name) => {\n  if (value != null && typeof value !== 'object' && typeof value !== 'function') {\n    throw new ERR_INVALID_ARG_TYPE(name, 'a dictionary', value)\n  }\n})\n\n/**\n * @callback validateArray\n * @param {*} value\n * @param {string} name\n * @param {number} [minLength]\n * @returns {asserts value is any[]}\n */\n\n/** @type {validateArray} */\nconst validateArray = hideStackFrames((value, name, minLength = 0) => {\n  if (!ArrayIsArray(value)) {\n    throw new ERR_INVALID_ARG_TYPE(name, 'Array', value)\n  }\n  if (value.length < minLength) {\n    const reason = `must be longer than ${minLength}`\n    throw new ERR_INVALID_ARG_VALUE(name, value, reason)\n  }\n})\n\n/**\n * @callback validateStringArray\n * @param {*} value\n * @param {string} name\n * @returns {asserts value is string[]}\n */\n\n/** @type {validateStringArray} */\nfunction validateStringArray(value, name) {\n  validateArray(value, name)\n  for (let i = 0; i < value.length; i++) {\n    validateString(value[i], `${name}[${i}]`)\n  }\n}\n\n/**\n * @callback validateBooleanArray\n * @param {*} value\n * @param {string} name\n * @returns {asserts value is boolean[]}\n */\n\n/** @type {validateBooleanArray} */\nfunction validateBooleanArray(value, name) {\n  validateArray(value, name)\n  for (let i = 0; i < value.length; i++) {\n    validateBoolean(value[i], `${name}[${i}]`)\n  }\n}\n\n/**\n * @callback validateAbortSignalArray\n * @param {*} value\n * @param {string} name\n * @returns {asserts value is AbortSignal[]}\n */\n\n/** @type {validateAbortSignalArray} */\nfunction validateAbortSignalArray(value, name) {\n  validateArray(value, name)\n  for (let i = 0; i < value.length; i++) {\n    const signal = value[i]\n    const indexedName = `${name}[${i}]`\n    if (signal == null) {\n      throw new ERR_INVALID_ARG_TYPE(indexedName, 'AbortSignal', signal)\n    }\n    validateAbortSignal(signal, indexedName)\n  }\n}\n\n/**\n * @param {*} signal\n * @param {string} [name='signal']\n * @returns {asserts signal is keyof signals}\n */\nfunction validateSignalName(signal, name = 'signal') {\n  validateString(signal, name)\n  if (signals[signal] === undefined) {\n    if (signals[StringPrototypeToUpperCase(signal)] !== undefined) {\n      throw new ERR_UNKNOWN_SIGNAL(signal + ' (signals must use all capital letters)')\n    }\n    throw new ERR_UNKNOWN_SIGNAL(signal)\n  }\n}\n\n/**\n * @callback validateBuffer\n * @param {*} buffer\n * @param {string} [name='buffer']\n * @returns {asserts buffer is ArrayBufferView}\n */\n\n/** @type {validateBuffer} */\nconst validateBuffer = hideStackFrames((buffer, name = 'buffer') => {\n  if (!isArrayBufferView(buffer)) {\n    throw new ERR_INVALID_ARG_TYPE(name, ['Buffer', 'TypedArray', 'DataView'], buffer)\n  }\n})\n\n/**\n * @param {string} data\n * @param {string} encoding\n */\nfunction validateEncoding(data, encoding) {\n  const normalizedEncoding = normalizeEncoding(encoding)\n  const length = data.length\n  if (normalizedEncoding === 'hex' && length % 2 !== 0) {\n    throw new ERR_INVALID_ARG_VALUE('encoding', encoding, `is invalid for data of length ${length}`)\n  }\n}\n\n/**\n * Check that the port number is not NaN when coerced to a number,\n * is an integer and that it falls within the legal range of port numbers.\n * @param {*} port\n * @param {string} [name='Port']\n * @param {boolean} [allowZero=true]\n * @returns {number}\n */\nfunction validatePort(port, name = 'Port', allowZero = true) {\n  if (\n    (typeof port !== 'number' && typeof port !== 'string') ||\n    (typeof port === 'string' && StringPrototypeTrim(port).length === 0) ||\n    +port !== +port >>> 0 ||\n    port > 0xffff ||\n    (port === 0 && !allowZero)\n  ) {\n    throw new ERR_SOCKET_BAD_PORT(name, port, allowZero)\n  }\n  return port | 0\n}\n\n/**\n * @callback validateAbortSignal\n * @param {*} signal\n * @param {string} name\n */\n\n/** @type {validateAbortSignal} */\nconst validateAbortSignal = hideStackFrames((signal, name) => {\n  if (signal !== undefined && (signal === null || typeof signal !== 'object' || !('aborted' in signal))) {\n    throw new ERR_INVALID_ARG_TYPE(name, 'AbortSignal', signal)\n  }\n})\n\n/**\n * @callback validateFunction\n * @param {*} value\n * @param {string} name\n * @returns {asserts value is Function}\n */\n\n/** @type {validateFunction} */\nconst validateFunction = hideStackFrames((value, name) => {\n  if (typeof value !== 'function') throw new ERR_INVALID_ARG_TYPE(name, 'Function', value)\n})\n\n/**\n * @callback validatePlainFunction\n * @param {*} value\n * @param {string} name\n * @returns {asserts value is Function}\n */\n\n/** @type {validatePlainFunction} */\nconst validatePlainFunction = hideStackFrames((value, name) => {\n  if (typeof value !== 'function' || isAsyncFunction(value)) throw new ERR_INVALID_ARG_TYPE(name, 'Function', value)\n})\n\n/**\n * @callback validateUndefined\n * @param {*} value\n * @param {string} name\n * @returns {asserts value is undefined}\n */\n\n/** @type {validateUndefined} */\nconst validateUndefined = hideStackFrames((value, name) => {\n  if (value !== undefined) throw new ERR_INVALID_ARG_TYPE(name, 'undefined', value)\n})\n\n/**\n * @template T\n * @param {T} value\n * @param {string} name\n * @param {T[]} union\n */\nfunction validateUnion(value, name, union) {\n  if (!ArrayPrototypeIncludes(union, value)) {\n    throw new ERR_INVALID_ARG_TYPE(name, `('${ArrayPrototypeJoin(union, '|')}')`, value)\n  }\n}\n\n/*\n  The rules for the Link header field are described here:\n  https://www.rfc-editor.org/rfc/rfc8288.html#section-3\n\n  This regex validates any string surrounded by angle brackets\n  (not necessarily a valid URI reference) followed by zero or more\n  link-params separated by semicolons.\n*/\nconst linkValueRegExp = /^(?:<[^>]*>)(?:\\s*;\\s*[^;\"\\s]+(?:=(\")?[^;\"\\s]*\\1)?)*$/\n\n/**\n * @param {any} value\n * @param {string} name\n */\nfunction validateLinkHeaderFormat(value, name) {\n  if (typeof value === 'undefined' || !RegExpPrototypeExec(linkValueRegExp, value)) {\n    throw new ERR_INVALID_ARG_VALUE(\n      name,\n      value,\n      'must be an array or string of format \"</styles.css>; rel=preload; as=style\"'\n    )\n  }\n}\n\n/**\n * @param {any} hints\n * @return {string}\n */\nfunction validateLinkHeaderValue(hints) {\n  if (typeof hints === 'string') {\n    validateLinkHeaderFormat(hints, 'hints')\n    return hints\n  } else if (ArrayIsArray(hints)) {\n    const hintsLength = hints.length\n    let result = ''\n    if (hintsLength === 0) {\n      return result\n    }\n    for (let i = 0; i < hintsLength; i++) {\n      const link = hints[i]\n      validateLinkHeaderFormat(link, 'hints')\n      result += link\n      if (i !== hintsLength - 1) {\n        result += ', '\n      }\n    }\n    return result\n  }\n  throw new ERR_INVALID_ARG_VALUE(\n    'hints',\n    hints,\n    'must be an array or string of format \"</styles.css>; rel=preload; as=style\"'\n  )\n}\nmodule.exports = {\n  isInt32,\n  isUint32,\n  parseFileMode,\n  validateArray,\n  validateStringArray,\n  validateBooleanArray,\n  validateAbortSignalArray,\n  validateBoolean,\n  validateBuffer,\n  validateDictionary,\n  validateEncoding,\n  validateFunction,\n  validateInt32,\n  validateInteger,\n  validateNumber,\n  validateObject,\n  validateOneOf,\n  validatePlainFunction,\n  validatePort,\n  validateSignalName,\n  validateString,\n  validateUint32,\n  validateUndefined,\n  validateUnion,\n  validateAbortSignal,\n  validateLinkHeaderValue\n}\n","'use strict'\n\nconst AbortController = globalThis.AbortController || require('abort-controller').AbortController\nconst {\n  codes: { ERR_INVALID_ARG_VALUE, ERR_INVALID_ARG_TYPE, ERR_MISSING_ARGS, ERR_OUT_OF_RANGE },\n  AbortError\n} = require('../../ours/errors')\nconst { validateAbortSignal, validateInteger, validateObject } = require('../validators')\nconst kWeakHandler = require('../../ours/primordials').Symbol('kWeak')\nconst kResistStopPropagation = require('../../ours/primordials').Symbol('kResistStopPropagation')\nconst { finished } = require('./end-of-stream')\nconst staticCompose = require('./compose')\nconst { addAbortSignalNoValidate } = require('./add-abort-signal')\nconst { isWritable, isNodeStream } = require('./utils')\nconst { deprecate } = require('../../ours/util')\nconst {\n  ArrayPrototypePush,\n  Boolean,\n  MathFloor,\n  Number,\n  NumberIsNaN,\n  Promise,\n  PromiseReject,\n  PromiseResolve,\n  PromisePrototypeThen,\n  Symbol\n} = require('../../ours/primordials')\nconst kEmpty = Symbol('kEmpty')\nconst kEof = Symbol('kEof')\nfunction compose(stream, options) {\n  if (options != null) {\n    validateObject(options, 'options')\n  }\n  if ((options === null || options === undefined ? undefined : options.signal) != null) {\n    validateAbortSignal(options.signal, 'options.signal')\n  }\n  if (isNodeStream(stream) && !isWritable(stream)) {\n    throw new ERR_INVALID_ARG_VALUE('stream', stream, 'must be writable')\n  }\n  const composedStream = staticCompose(this, stream)\n  if (options !== null && options !== undefined && options.signal) {\n    // Not validating as we already validated before\n    addAbortSignalNoValidate(options.signal, composedStream)\n  }\n  return composedStream\n}\nfunction map(fn, options) {\n  if (typeof fn !== 'function') {\n    throw new ERR_INVALID_ARG_TYPE('fn', ['Function', 'AsyncFunction'], fn)\n  }\n  if (options != null) {\n    validateObject(options, 'options')\n  }\n  if ((options === null || options === undefined ? undefined : options.signal) != null) {\n    validateAbortSignal(options.signal, 'options.signal')\n  }\n  let concurrency = 1\n  if ((options === null || options === undefined ? undefined : options.concurrency) != null) {\n    concurrency = MathFloor(options.concurrency)\n  }\n  let highWaterMark = concurrency - 1\n  if ((options === null || options === undefined ? undefined : options.highWaterMark) != null) {\n    highWaterMark = MathFloor(options.highWaterMark)\n  }\n  validateInteger(concurrency, 'options.concurrency', 1)\n  validateInteger(highWaterMark, 'options.highWaterMark', 0)\n  highWaterMark += concurrency\n  return async function* map() {\n    const signal = require('../../ours/util').AbortSignalAny(\n      [options === null || options === undefined ? undefined : options.signal].filter(Boolean)\n    )\n    const stream = this\n    const queue = []\n    const signalOpt = {\n      signal\n    }\n    let next\n    let resume\n    let done = false\n    let cnt = 0\n    function onCatch() {\n      done = true\n      afterItemProcessed()\n    }\n    function afterItemProcessed() {\n      cnt -= 1\n      maybeResume()\n    }\n    function maybeResume() {\n      if (resume && !done && cnt < concurrency && queue.length < highWaterMark) {\n        resume()\n        resume = null\n      }\n    }\n    async function pump() {\n      try {\n        for await (let val of stream) {\n          if (done) {\n            return\n          }\n          if (signal.aborted) {\n            throw new AbortError()\n          }\n          try {\n            val = fn(val, signalOpt)\n            if (val === kEmpty) {\n              continue\n            }\n            val = PromiseResolve(val)\n          } catch (err) {\n            val = PromiseReject(err)\n          }\n          cnt += 1\n          PromisePrototypeThen(val, afterItemProcessed, onCatch)\n          queue.push(val)\n          if (next) {\n            next()\n            next = null\n          }\n          if (!done && (queue.length >= highWaterMark || cnt >= concurrency)) {\n            await new Promise((resolve) => {\n              resume = resolve\n            })\n          }\n        }\n        queue.push(kEof)\n      } catch (err) {\n        const val = PromiseReject(err)\n        PromisePrototypeThen(val, afterItemProcessed, onCatch)\n        queue.push(val)\n      } finally {\n        done = true\n        if (next) {\n          next()\n          next = null\n        }\n      }\n    }\n    pump()\n    try {\n      while (true) {\n        while (queue.length > 0) {\n          const val = await queue[0]\n          if (val === kEof) {\n            return\n          }\n          if (signal.aborted) {\n            throw new AbortError()\n          }\n          if (val !== kEmpty) {\n            yield val\n          }\n          queue.shift()\n          maybeResume()\n        }\n        await new Promise((resolve) => {\n          next = resolve\n        })\n      }\n    } finally {\n      done = true\n      if (resume) {\n        resume()\n        resume = null\n      }\n    }\n  }.call(this)\n}\nfunction asIndexedPairs(options = undefined) {\n  if (options != null) {\n    validateObject(options, 'options')\n  }\n  if ((options === null || options === undefined ? undefined : options.signal) != null) {\n    validateAbortSignal(options.signal, 'options.signal')\n  }\n  return async function* asIndexedPairs() {\n    let index = 0\n    for await (const val of this) {\n      var _options$signal\n      if (\n        options !== null &&\n        options !== undefined &&\n        (_options$signal = options.signal) !== null &&\n        _options$signal !== undefined &&\n        _options$signal.aborted\n      ) {\n        throw new AbortError({\n          cause: options.signal.reason\n        })\n      }\n      yield [index++, val]\n    }\n  }.call(this)\n}\nasync function some(fn, options = undefined) {\n  for await (const unused of filter.call(this, fn, options)) {\n    return true\n  }\n  return false\n}\nasync function every(fn, options = undefined) {\n  if (typeof fn !== 'function') {\n    throw new ERR_INVALID_ARG_TYPE('fn', ['Function', 'AsyncFunction'], fn)\n  }\n  // https://en.wikipedia.org/wiki/De_Morgan%27s_laws\n  return !(await some.call(\n    this,\n    async (...args) => {\n      return !(await fn(...args))\n    },\n    options\n  ))\n}\nasync function find(fn, options) {\n  for await (const result of filter.call(this, fn, options)) {\n    return result\n  }\n  return undefined\n}\nasync function forEach(fn, options) {\n  if (typeof fn !== 'function') {\n    throw new ERR_INVALID_ARG_TYPE('fn', ['Function', 'AsyncFunction'], fn)\n  }\n  async function forEachFn(value, options) {\n    await fn(value, options)\n    return kEmpty\n  }\n  // eslint-disable-next-line no-unused-vars\n  for await (const unused of map.call(this, forEachFn, options));\n}\nfunction filter(fn, options) {\n  if (typeof fn !== 'function') {\n    throw new ERR_INVALID_ARG_TYPE('fn', ['Function', 'AsyncFunction'], fn)\n  }\n  async function filterFn(value, options) {\n    if (await fn(value, options)) {\n      return value\n    }\n    return kEmpty\n  }\n  return map.call(this, filterFn, options)\n}\n\n// Specific to provide better error to reduce since the argument is only\n// missing if the stream has no items in it - but the code is still appropriate\nclass ReduceAwareErrMissingArgs extends ERR_MISSING_ARGS {\n  constructor() {\n    super('reduce')\n    this.message = 'Reduce of an empty stream requires an initial value'\n  }\n}\nasync function reduce(reducer, initialValue, options) {\n  var _options$signal2\n  if (typeof reducer !== 'function') {\n    throw new ERR_INVALID_ARG_TYPE('reducer', ['Function', 'AsyncFunction'], reducer)\n  }\n  if (options != null) {\n    validateObject(options, 'options')\n  }\n  if ((options === null || options === undefined ? undefined : options.signal) != null) {\n    validateAbortSignal(options.signal, 'options.signal')\n  }\n  let hasInitialValue = arguments.length > 1\n  if (\n    options !== null &&\n    options !== undefined &&\n    (_options$signal2 = options.signal) !== null &&\n    _options$signal2 !== undefined &&\n    _options$signal2.aborted\n  ) {\n    const err = new AbortError(undefined, {\n      cause: options.signal.reason\n    })\n    this.once('error', () => {}) // The error is already propagated\n    await finished(this.destroy(err))\n    throw err\n  }\n  const ac = new AbortController()\n  const signal = ac.signal\n  if (options !== null && options !== undefined && options.signal) {\n    const opts = {\n      once: true,\n      [kWeakHandler]: this,\n      [kResistStopPropagation]: true\n    }\n    options.signal.addEventListener('abort', () => ac.abort(), opts)\n  }\n  let gotAnyItemFromStream = false\n  try {\n    for await (const value of this) {\n      var _options$signal3\n      gotAnyItemFromStream = true\n      if (\n        options !== null &&\n        options !== undefined &&\n        (_options$signal3 = options.signal) !== null &&\n        _options$signal3 !== undefined &&\n        _options$signal3.aborted\n      ) {\n        throw new AbortError()\n      }\n      if (!hasInitialValue) {\n        initialValue = value\n        hasInitialValue = true\n      } else {\n        initialValue = await reducer(initialValue, value, {\n          signal\n        })\n      }\n    }\n    if (!gotAnyItemFromStream && !hasInitialValue) {\n      throw new ReduceAwareErrMissingArgs()\n    }\n  } finally {\n    ac.abort()\n  }\n  return initialValue\n}\nasync function toArray(options) {\n  if (options != null) {\n    validateObject(options, 'options')\n  }\n  if ((options === null || options === undefined ? undefined : options.signal) != null) {\n    validateAbortSignal(options.signal, 'options.signal')\n  }\n  const result = []\n  for await (const val of this) {\n    var _options$signal4\n    if (\n      options !== null &&\n      options !== undefined &&\n      (_options$signal4 = options.signal) !== null &&\n      _options$signal4 !== undefined &&\n      _options$signal4.aborted\n    ) {\n      throw new AbortError(undefined, {\n        cause: options.signal.reason\n      })\n    }\n    ArrayPrototypePush(result, val)\n  }\n  return result\n}\nfunction flatMap(fn, options) {\n  const values = map.call(this, fn, options)\n  return async function* flatMap() {\n    for await (const val of values) {\n      yield* val\n    }\n  }.call(this)\n}\nfunction toIntegerOrInfinity(number) {\n  // We coerce here to align with the spec\n  // https://github.com/tc39/proposal-iterator-helpers/issues/169\n  number = Number(number)\n  if (NumberIsNaN(number)) {\n    return 0\n  }\n  if (number < 0) {\n    throw new ERR_OUT_OF_RANGE('number', '>= 0', number)\n  }\n  return number\n}\nfunction drop(number, options = undefined) {\n  if (options != null) {\n    validateObject(options, 'options')\n  }\n  if ((options === null || options === undefined ? undefined : options.signal) != null) {\n    validateAbortSignal(options.signal, 'options.signal')\n  }\n  number = toIntegerOrInfinity(number)\n  return async function* drop() {\n    var _options$signal5\n    if (\n      options !== null &&\n      options !== undefined &&\n      (_options$signal5 = options.signal) !== null &&\n      _options$signal5 !== undefined &&\n      _options$signal5.aborted\n    ) {\n      throw new AbortError()\n    }\n    for await (const val of this) {\n      var _options$signal6\n      if (\n        options !== null &&\n        options !== undefined &&\n        (_options$signal6 = options.signal) !== null &&\n        _options$signal6 !== undefined &&\n        _options$signal6.aborted\n      ) {\n        throw new AbortError()\n      }\n      if (number-- <= 0) {\n        yield val\n      }\n    }\n  }.call(this)\n}\nfunction take(number, options = undefined) {\n  if (options != null) {\n    validateObject(options, 'options')\n  }\n  if ((options === null || options === undefined ? undefined : options.signal) != null) {\n    validateAbortSignal(options.signal, 'options.signal')\n  }\n  number = toIntegerOrInfinity(number)\n  return async function* take() {\n    var _options$signal7\n    if (\n      options !== null &&\n      options !== undefined &&\n      (_options$signal7 = options.signal) !== null &&\n      _options$signal7 !== undefined &&\n      _options$signal7.aborted\n    ) {\n      throw new AbortError()\n    }\n    for await (const val of this) {\n      var _options$signal8\n      if (\n        options !== null &&\n        options !== undefined &&\n        (_options$signal8 = options.signal) !== null &&\n        _options$signal8 !== undefined &&\n        _options$signal8.aborted\n      ) {\n        throw new AbortError()\n      }\n      if (number-- > 0) {\n        yield val\n      }\n\n      // Don't get another item from iterator in case we reached the end\n      if (number <= 0) {\n        return\n      }\n    }\n  }.call(this)\n}\nmodule.exports.streamReturningOperators = {\n  asIndexedPairs: deprecate(asIndexedPairs, 'readable.asIndexedPairs will be removed in a future version.'),\n  drop,\n  filter,\n  flatMap,\n  map,\n  take,\n  compose\n}\nmodule.exports.promiseReturningOperators = {\n  every,\n  forEach,\n  reduce,\n  toArray,\n  some,\n  find\n}\n","// shim for using process in browser\nvar process = module.exports = {};\n\n// cached from whatever global is present so that test runners that stub it\n// don't break things.  But we need to wrap it in a try catch in case it is\n// wrapped in strict mode code which doesn't define any globals.  It's inside a\n// function because try/catches deoptimize in certain engines.\n\nvar cachedSetTimeout;\nvar cachedClearTimeout;\n\nfunction defaultSetTimout() {\n    throw new Error('setTimeout has not been defined');\n}\nfunction defaultClearTimeout () {\n    throw new Error('clearTimeout has not been defined');\n}\n(function () {\n    try {\n        if (typeof setTimeout === 'function') {\n            cachedSetTimeout = setTimeout;\n        } else {\n            cachedSetTimeout = defaultSetTimout;\n        }\n    } catch (e) {\n        cachedSetTimeout = defaultSetTimout;\n    }\n    try {\n        if (typeof clearTimeout === 'function') {\n            cachedClearTimeout = clearTimeout;\n        } else {\n            cachedClearTimeout = defaultClearTimeout;\n        }\n    } catch (e) {\n        cachedClearTimeout = defaultClearTimeout;\n    }\n} ())\nfunction runTimeout(fun) {\n    if (cachedSetTimeout === setTimeout) {\n        //normal enviroments in sane situations\n        return setTimeout(fun, 0);\n    }\n    // if setTimeout wasn't available but was latter defined\n    if ((cachedSetTimeout === defaultSetTimout || !cachedSetTimeout) && setTimeout) {\n        cachedSetTimeout = setTimeout;\n        return setTimeout(fun, 0);\n    }\n    try {\n        // when when somebody has screwed with setTimeout but no I.E. maddness\n        return cachedSetTimeout(fun, 0);\n    } catch(e){\n        try {\n            // When we are in I.E. but the script has been evaled so I.E. doesn't trust the global object when called normally\n            return cachedSetTimeout.call(null, fun, 0);\n        } catch(e){\n            // same as above but when it's a version of I.E. that must have the global object for 'this', hopfully our context correct otherwise it will throw a global error\n            return cachedSetTimeout.call(this, fun, 0);\n        }\n    }\n\n\n}\nfunction runClearTimeout(marker) {\n    if (cachedClearTimeout === clearTimeout) {\n        //normal enviroments in sane situations\n        return clearTimeout(marker);\n    }\n    // if clearTimeout wasn't available but was latter defined\n    if ((cachedClearTimeout === defaultClearTimeout || !cachedClearTimeout) && clearTimeout) {\n        cachedClearTimeout = clearTimeout;\n        return clearTimeout(marker);\n    }\n    try {\n        // when when somebody has screwed with setTimeout but no I.E. maddness\n        return cachedClearTimeout(marker);\n    } catch (e){\n        try {\n            // When we are in I.E. but the script has been evaled so I.E. doesn't  trust the global object when called normally\n            return cachedClearTimeout.call(null, marker);\n        } catch (e){\n            // same as above but when it's a version of I.E. that must have the global object for 'this', hopfully our context correct otherwise it will throw a global error.\n            // Some versions of I.E. have different rules for clearTimeout vs setTimeout\n            return cachedClearTimeout.call(this, marker);\n        }\n    }\n\n\n\n}\nvar queue = [];\nvar draining = false;\nvar currentQueue;\nvar queueIndex = -1;\n\nfunction cleanUpNextTick() {\n    if (!draining || !currentQueue) {\n        return;\n    }\n    draining = false;\n    if (currentQueue.length) {\n        queue = currentQueue.concat(queue);\n    } else {\n        queueIndex = -1;\n    }\n    if (queue.length) {\n        drainQueue();\n    }\n}\n\nfunction drainQueue() {\n    if (draining) {\n        return;\n    }\n    var timeout = runTimeout(cleanUpNextTick);\n    draining = true;\n\n    var len = queue.length;\n    while(len) {\n        currentQueue = queue;\n        queue = [];\n        while (++queueIndex < len) {\n            if (currentQueue) {\n                currentQueue[queueIndex].run();\n            }\n        }\n        queueIndex = -1;\n        len = queue.length;\n    }\n    currentQueue = null;\n    draining = false;\n    runClearTimeout(timeout);\n}\n\nprocess.nextTick = function (fun) {\n    var args = new Array(arguments.length - 1);\n    if (arguments.length > 1) {\n        for (var i = 1; i < arguments.length; i++) {\n            args[i - 1] = arguments[i];\n        }\n    }\n    queue.push(new Item(fun, args));\n    if (queue.length === 1 && !draining) {\n        runTimeout(drainQueue);\n    }\n};\n\n// v8 likes predictible objects\nfunction Item(fun, array) {\n    this.fun = fun;\n    this.array = array;\n}\nItem.prototype.run = function () {\n    this.fun.apply(null, this.array);\n};\nprocess.title = 'browser';\nprocess.browser = true;\nprocess.env = {};\nprocess.argv = [];\nprocess.version = ''; // empty string to avoid regexp issues\nprocess.versions = {};\n\nfunction noop() {}\n\nprocess.on = noop;\nprocess.addListener = noop;\nprocess.once = noop;\nprocess.off = noop;\nprocess.removeListener = noop;\nprocess.removeAllListeners = noop;\nprocess.emit = noop;\nprocess.prependListener = noop;\nprocess.prependOnceListener = noop;\n\nprocess.listeners = function (name) { return [] }\n\nprocess.binding = function (name) {\n    throw new Error('process.binding is not supported');\n};\n\nprocess.cwd = function () { return '/' };\nprocess.chdir = function (dir) {\n    throw new Error('process.chdir is not supported');\n};\nprocess.umask = function() { return 0; };\n","/* (ignored) */","/* replacement start */\n\nconst process = require('process/')\n\n/* replacement end */\n// Copyright Joyent, Inc. and other Node contributors.\n//\n// Permission is hereby granted, free of charge, to any person obtaining a\n// copy of this software and associated documentation files (the\n// \"Software\"), to deal in the Software without restriction, including\n// without limitation the rights to use, copy, modify, merge, publish,\n// distribute, sublicense, and/or sell copies of the Software, and to permit\n// persons to whom the Software is furnished to do so, subject to the\n// following conditions:\n//\n// The above copyright notice and this permission notice shall be included\n// in all copies or substantial portions of the Software.\n//\n// THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS\n// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF\n// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN\n// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,\n// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR\n// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE\n// USE OR OTHER DEALINGS IN THE SOFTWARE.\n\n;('use strict')\nconst {\n  ArrayPrototypeIndexOf,\n  NumberIsInteger,\n  NumberIsNaN,\n  NumberParseInt,\n  ObjectDefineProperties,\n  ObjectKeys,\n  ObjectSetPrototypeOf,\n  Promise,\n  SafeSet,\n  SymbolAsyncDispose,\n  SymbolAsyncIterator,\n  Symbol\n} = require('../../ours/primordials')\nmodule.exports = Readable\nReadable.ReadableState = ReadableState\nconst { EventEmitter: EE } = require('events')\nconst { Stream, prependListener } = require('./legacy')\nconst { Buffer } = require('buffer')\nconst { addAbortSignal } = require('./add-abort-signal')\nconst eos = require('./end-of-stream')\nlet debug = require('../../ours/util').debuglog('stream', (fn) => {\n  debug = fn\n})\nconst BufferList = require('./buffer_list')\nconst destroyImpl = require('./destroy')\nconst { getHighWaterMark, getDefaultHighWaterMark } = require('./state')\nconst {\n  aggregateTwoErrors,\n  codes: {\n    ERR_INVALID_ARG_TYPE,\n    ERR_METHOD_NOT_IMPLEMENTED,\n    ERR_OUT_OF_RANGE,\n    ERR_STREAM_PUSH_AFTER_EOF,\n    ERR_STREAM_UNSHIFT_AFTER_END_EVENT\n  },\n  AbortError\n} = require('../../ours/errors')\nconst { validateObject } = require('../validators')\nconst kPaused = Symbol('kPaused')\nconst { StringDecoder } = require('string_decoder')\nconst from = require('./from')\nObjectSetPrototypeOf(Readable.prototype, Stream.prototype)\nObjectSetPrototypeOf(Readable, Stream)\nconst nop = () => {}\nconst { errorOrDestroy } = destroyImpl\nconst kObjectMode = 1 << 0\nconst kEnded = 1 << 1\nconst kEndEmitted = 1 << 2\nconst kReading = 1 << 3\nconst kConstructed = 1 << 4\nconst kSync = 1 << 5\nconst kNeedReadable = 1 << 6\nconst kEmittedReadable = 1 << 7\nconst kReadableListening = 1 << 8\nconst kResumeScheduled = 1 << 9\nconst kErrorEmitted = 1 << 10\nconst kEmitClose = 1 << 11\nconst kAutoDestroy = 1 << 12\nconst kDestroyed = 1 << 13\nconst kClosed = 1 << 14\nconst kCloseEmitted = 1 << 15\nconst kMultiAwaitDrain = 1 << 16\nconst kReadingMore = 1 << 17\nconst kDataEmitted = 1 << 18\n\n// TODO(benjamingr) it is likely slower to do it this way than with free functions\nfunction makeBitMapDescriptor(bit) {\n  return {\n    enumerable: false,\n    get() {\n      return (this.state & bit) !== 0\n    },\n    set(value) {\n      if (value) this.state |= bit\n      else this.state &= ~bit\n    }\n  }\n}\nObjectDefineProperties(ReadableState.prototype, {\n  objectMode: makeBitMapDescriptor(kObjectMode),\n  ended: makeBitMapDescriptor(kEnded),\n  endEmitted: makeBitMapDescriptor(kEndEmitted),\n  reading: makeBitMapDescriptor(kReading),\n  // Stream is still being constructed and cannot be\n  // destroyed until construction finished or failed.\n  // Async construction is opt in, therefore we start as\n  // constructed.\n  constructed: makeBitMapDescriptor(kConstructed),\n  // A flag to be able to tell if the event 'readable'/'data' is emitted\n  // immediately, or on a later tick.  We set this to true at first, because\n  // any actions that shouldn't happen until \"later\" should generally also\n  // not happen before the first read call.\n  sync: makeBitMapDescriptor(kSync),\n  // Whenever we return null, then we set a flag to say\n  // that we're awaiting a 'readable' event emission.\n  needReadable: makeBitMapDescriptor(kNeedReadable),\n  emittedReadable: makeBitMapDescriptor(kEmittedReadable),\n  readableListening: makeBitMapDescriptor(kReadableListening),\n  resumeScheduled: makeBitMapDescriptor(kResumeScheduled),\n  // True if the error was already emitted and should not be thrown again.\n  errorEmitted: makeBitMapDescriptor(kErrorEmitted),\n  emitClose: makeBitMapDescriptor(kEmitClose),\n  autoDestroy: makeBitMapDescriptor(kAutoDestroy),\n  // Has it been destroyed.\n  destroyed: makeBitMapDescriptor(kDestroyed),\n  // Indicates whether the stream has finished destroying.\n  closed: makeBitMapDescriptor(kClosed),\n  // True if close has been emitted or would have been emitted\n  // depending on emitClose.\n  closeEmitted: makeBitMapDescriptor(kCloseEmitted),\n  multiAwaitDrain: makeBitMapDescriptor(kMultiAwaitDrain),\n  // If true, a maybeReadMore has been scheduled.\n  readingMore: makeBitMapDescriptor(kReadingMore),\n  dataEmitted: makeBitMapDescriptor(kDataEmitted)\n})\nfunction ReadableState(options, stream, isDuplex) {\n  // Duplex streams are both readable and writable, but share\n  // the same options object.\n  // However, some cases require setting options to different\n  // values for the readable and the writable sides of the duplex stream.\n  // These options can be provided separately as readableXXX and writableXXX.\n  if (typeof isDuplex !== 'boolean') isDuplex = stream instanceof require('./duplex')\n\n  // Bit map field to store ReadableState more effciently with 1 bit per field\n  // instead of a V8 slot per field.\n  this.state = kEmitClose | kAutoDestroy | kConstructed | kSync\n  // Object stream flag. Used to make read(n) ignore n and to\n  // make all the buffer merging and length checks go away.\n  if (options && options.objectMode) this.state |= kObjectMode\n  if (isDuplex && options && options.readableObjectMode) this.state |= kObjectMode\n\n  // The point at which it stops calling _read() to fill the buffer\n  // Note: 0 is a valid value, means \"don't call _read preemptively ever\"\n  this.highWaterMark = options\n    ? getHighWaterMark(this, options, 'readableHighWaterMark', isDuplex)\n    : getDefaultHighWaterMark(false)\n\n  // A linked list is used to store data chunks instead of an array because the\n  // linked list can remove elements from the beginning faster than\n  // array.shift().\n  this.buffer = new BufferList()\n  this.length = 0\n  this.pipes = []\n  this.flowing = null\n  this[kPaused] = null\n\n  // Should close be emitted on destroy. Defaults to true.\n  if (options && options.emitClose === false) this.state &= ~kEmitClose\n\n  // Should .destroy() be called after 'end' (and potentially 'finish').\n  if (options && options.autoDestroy === false) this.state &= ~kAutoDestroy\n\n  // Indicates whether the stream has errored. When true no further\n  // _read calls, 'data' or 'readable' events should occur. This is needed\n  // since when autoDestroy is disabled we need a way to tell whether the\n  // stream has failed.\n  this.errored = null\n\n  // Crypto is kind of old and crusty.  Historically, its default string\n  // encoding is 'binary' so we have to make this configurable.\n  // Everything else in the universe uses 'utf8', though.\n  this.defaultEncoding = (options && options.defaultEncoding) || 'utf8'\n\n  // Ref the piped dest which we need a drain event on it\n  // type: null | Writable | Set<Writable>.\n  this.awaitDrainWriters = null\n  this.decoder = null\n  this.encoding = null\n  if (options && options.encoding) {\n    this.decoder = new StringDecoder(options.encoding)\n    this.encoding = options.encoding\n  }\n}\nfunction Readable(options) {\n  if (!(this instanceof Readable)) return new Readable(options)\n\n  // Checking for a Stream.Duplex instance is faster here instead of inside\n  // the ReadableState constructor, at least with V8 6.5.\n  const isDuplex = this instanceof require('./duplex')\n  this._readableState = new ReadableState(options, this, isDuplex)\n  if (options) {\n    if (typeof options.read === 'function') this._read = options.read\n    if (typeof options.destroy === 'function') this._destroy = options.destroy\n    if (typeof options.construct === 'function') this._construct = options.construct\n    if (options.signal && !isDuplex) addAbortSignal(options.signal, this)\n  }\n  Stream.call(this, options)\n  destroyImpl.construct(this, () => {\n    if (this._readableState.needReadable) {\n      maybeReadMore(this, this._readableState)\n    }\n  })\n}\nReadable.prototype.destroy = destroyImpl.destroy\nReadable.prototype._undestroy = destroyImpl.undestroy\nReadable.prototype._destroy = function (err, cb) {\n  cb(err)\n}\nReadable.prototype[EE.captureRejectionSymbol] = function (err) {\n  this.destroy(err)\n}\nReadable.prototype[SymbolAsyncDispose] = function () {\n  let error\n  if (!this.destroyed) {\n    error = this.readableEnded ? null : new AbortError()\n    this.destroy(error)\n  }\n  return new Promise((resolve, reject) => eos(this, (err) => (err && err !== error ? reject(err) : resolve(null))))\n}\n\n// Manually shove something into the read() buffer.\n// This returns true if the highWaterMark has not been hit yet,\n// similar to how Writable.write() returns true if you should\n// write() some more.\nReadable.prototype.push = function (chunk, encoding) {\n  return readableAddChunk(this, chunk, encoding, false)\n}\n\n// Unshift should *always* be something directly out of read().\nReadable.prototype.unshift = function (chunk, encoding) {\n  return readableAddChunk(this, chunk, encoding, true)\n}\nfunction readableAddChunk(stream, chunk, encoding, addToFront) {\n  debug('readableAddChunk', chunk)\n  const state = stream._readableState\n  let err\n  if ((state.state & kObjectMode) === 0) {\n    if (typeof chunk === 'string') {\n      encoding = encoding || state.defaultEncoding\n      if (state.encoding !== encoding) {\n        if (addToFront && state.encoding) {\n          // When unshifting, if state.encoding is set, we have to save\n          // the string in the BufferList with the state encoding.\n          chunk = Buffer.from(chunk, encoding).toString(state.encoding)\n        } else {\n          chunk = Buffer.from(chunk, encoding)\n          encoding = ''\n        }\n      }\n    } else if (chunk instanceof Buffer) {\n      encoding = ''\n    } else if (Stream._isUint8Array(chunk)) {\n      chunk = Stream._uint8ArrayToBuffer(chunk)\n      encoding = ''\n    } else if (chunk != null) {\n      err = new ERR_INVALID_ARG_TYPE('chunk', ['string', 'Buffer', 'Uint8Array'], chunk)\n    }\n  }\n  if (err) {\n    errorOrDestroy(stream, err)\n  } else if (chunk === null) {\n    state.state &= ~kReading\n    onEofChunk(stream, state)\n  } else if ((state.state & kObjectMode) !== 0 || (chunk && chunk.length > 0)) {\n    if (addToFront) {\n      if ((state.state & kEndEmitted) !== 0) errorOrDestroy(stream, new ERR_STREAM_UNSHIFT_AFTER_END_EVENT())\n      else if (state.destroyed || state.errored) return false\n      else addChunk(stream, state, chunk, true)\n    } else if (state.ended) {\n      errorOrDestroy(stream, new ERR_STREAM_PUSH_AFTER_EOF())\n    } else if (state.destroyed || state.errored) {\n      return false\n    } else {\n      state.state &= ~kReading\n      if (state.decoder && !encoding) {\n        chunk = state.decoder.write(chunk)\n        if (state.objectMode || chunk.length !== 0) addChunk(stream, state, chunk, false)\n        else maybeReadMore(stream, state)\n      } else {\n        addChunk(stream, state, chunk, false)\n      }\n    }\n  } else if (!addToFront) {\n    state.state &= ~kReading\n    maybeReadMore(stream, state)\n  }\n\n  // We can push more data if we are below the highWaterMark.\n  // Also, if we have no data yet, we can stand some more bytes.\n  // This is to work around cases where hwm=0, such as the repl.\n  return !state.ended && (state.length < state.highWaterMark || state.length === 0)\n}\nfunction addChunk(stream, state, chunk, addToFront) {\n  if (state.flowing && state.length === 0 && !state.sync && stream.listenerCount('data') > 0) {\n    // Use the guard to avoid creating `Set()` repeatedly\n    // when we have multiple pipes.\n    if ((state.state & kMultiAwaitDrain) !== 0) {\n      state.awaitDrainWriters.clear()\n    } else {\n      state.awaitDrainWriters = null\n    }\n    state.dataEmitted = true\n    stream.emit('data', chunk)\n  } else {\n    // Update the buffer info.\n    state.length += state.objectMode ? 1 : chunk.length\n    if (addToFront) state.buffer.unshift(chunk)\n    else state.buffer.push(chunk)\n    if ((state.state & kNeedReadable) !== 0) emitReadable(stream)\n  }\n  maybeReadMore(stream, state)\n}\nReadable.prototype.isPaused = function () {\n  const state = this._readableState\n  return state[kPaused] === true || state.flowing === false\n}\n\n// Backwards compatibility.\nReadable.prototype.setEncoding = function (enc) {\n  const decoder = new StringDecoder(enc)\n  this._readableState.decoder = decoder\n  // If setEncoding(null), decoder.encoding equals utf8.\n  this._readableState.encoding = this._readableState.decoder.encoding\n  const buffer = this._readableState.buffer\n  // Iterate over current buffer to convert already stored Buffers:\n  let content = ''\n  for (const data of buffer) {\n    content += decoder.write(data)\n  }\n  buffer.clear()\n  if (content !== '') buffer.push(content)\n  this._readableState.length = content.length\n  return this\n}\n\n// Don't raise the hwm > 1GB.\nconst MAX_HWM = 0x40000000\nfunction computeNewHighWaterMark(n) {\n  if (n > MAX_HWM) {\n    throw new ERR_OUT_OF_RANGE('size', '<= 1GiB', n)\n  } else {\n    // Get the next highest power of 2 to prevent increasing hwm excessively in\n    // tiny amounts.\n    n--\n    n |= n >>> 1\n    n |= n >>> 2\n    n |= n >>> 4\n    n |= n >>> 8\n    n |= n >>> 16\n    n++\n  }\n  return n\n}\n\n// This function is designed to be inlinable, so please take care when making\n// changes to the function body.\nfunction howMuchToRead(n, state) {\n  if (n <= 0 || (state.length === 0 && state.ended)) return 0\n  if ((state.state & kObjectMode) !== 0) return 1\n  if (NumberIsNaN(n)) {\n    // Only flow one buffer at a time.\n    if (state.flowing && state.length) return state.buffer.first().length\n    return state.length\n  }\n  if (n <= state.length) return n\n  return state.ended ? state.length : 0\n}\n\n// You can override either this method, or the async _read(n) below.\nReadable.prototype.read = function (n) {\n  debug('read', n)\n  // Same as parseInt(undefined, 10), however V8 7.3 performance regressed\n  // in this scenario, so we are doing it manually.\n  if (n === undefined) {\n    n = NaN\n  } else if (!NumberIsInteger(n)) {\n    n = NumberParseInt(n, 10)\n  }\n  const state = this._readableState\n  const nOrig = n\n\n  // If we're asking for more than the current hwm, then raise the hwm.\n  if (n > state.highWaterMark) state.highWaterMark = computeNewHighWaterMark(n)\n  if (n !== 0) state.state &= ~kEmittedReadable\n\n  // If we're doing read(0) to trigger a readable event, but we\n  // already have a bunch of data in the buffer, then just trigger\n  // the 'readable' event and move on.\n  if (\n    n === 0 &&\n    state.needReadable &&\n    ((state.highWaterMark !== 0 ? state.length >= state.highWaterMark : state.length > 0) || state.ended)\n  ) {\n    debug('read: emitReadable', state.length, state.ended)\n    if (state.length === 0 && state.ended) endReadable(this)\n    else emitReadable(this)\n    return null\n  }\n  n = howMuchToRead(n, state)\n\n  // If we've ended, and we're now clear, then finish it up.\n  if (n === 0 && state.ended) {\n    if (state.length === 0) endReadable(this)\n    return null\n  }\n\n  // All the actual chunk generation logic needs to be\n  // *below* the call to _read.  The reason is that in certain\n  // synthetic stream cases, such as passthrough streams, _read\n  // may be a completely synchronous operation which may change\n  // the state of the read buffer, providing enough data when\n  // before there was *not* enough.\n  //\n  // So, the steps are:\n  // 1. Figure out what the state of things will be after we do\n  // a read from the buffer.\n  //\n  // 2. If that resulting state will trigger a _read, then call _read.\n  // Note that this may be asynchronous, or synchronous.  Yes, it is\n  // deeply ugly to write APIs this way, but that still doesn't mean\n  // that the Readable class should behave improperly, as streams are\n  // designed to be sync/async agnostic.\n  // Take note if the _read call is sync or async (ie, if the read call\n  // has returned yet), so that we know whether or not it's safe to emit\n  // 'readable' etc.\n  //\n  // 3. Actually pull the requested chunks out of the buffer and return.\n\n  // if we need a readable event, then we need to do some reading.\n  let doRead = (state.state & kNeedReadable) !== 0\n  debug('need readable', doRead)\n\n  // If we currently have less than the highWaterMark, then also read some.\n  if (state.length === 0 || state.length - n < state.highWaterMark) {\n    doRead = true\n    debug('length less than watermark', doRead)\n  }\n\n  // However, if we've ended, then there's no point, if we're already\n  // reading, then it's unnecessary, if we're constructing we have to wait,\n  // and if we're destroyed or errored, then it's not allowed,\n  if (state.ended || state.reading || state.destroyed || state.errored || !state.constructed) {\n    doRead = false\n    debug('reading, ended or constructing', doRead)\n  } else if (doRead) {\n    debug('do read')\n    state.state |= kReading | kSync\n    // If the length is currently zero, then we *need* a readable event.\n    if (state.length === 0) state.state |= kNeedReadable\n\n    // Call internal read method\n    try {\n      this._read(state.highWaterMark)\n    } catch (err) {\n      errorOrDestroy(this, err)\n    }\n    state.state &= ~kSync\n\n    // If _read pushed data synchronously, then `reading` will be false,\n    // and we need to re-evaluate how much data we can return to the user.\n    if (!state.reading) n = howMuchToRead(nOrig, state)\n  }\n  let ret\n  if (n > 0) ret = fromList(n, state)\n  else ret = null\n  if (ret === null) {\n    state.needReadable = state.length <= state.highWaterMark\n    n = 0\n  } else {\n    state.length -= n\n    if (state.multiAwaitDrain) {\n      state.awaitDrainWriters.clear()\n    } else {\n      state.awaitDrainWriters = null\n    }\n  }\n  if (state.length === 0) {\n    // If we have nothing in the buffer, then we want to know\n    // as soon as we *do* get something into the buffer.\n    if (!state.ended) state.needReadable = true\n\n    // If we tried to read() past the EOF, then emit end on the next tick.\n    if (nOrig !== n && state.ended) endReadable(this)\n  }\n  if (ret !== null && !state.errorEmitted && !state.closeEmitted) {\n    state.dataEmitted = true\n    this.emit('data', ret)\n  }\n  return ret\n}\nfunction onEofChunk(stream, state) {\n  debug('onEofChunk')\n  if (state.ended) return\n  if (state.decoder) {\n    const chunk = state.decoder.end()\n    if (chunk && chunk.length) {\n      state.buffer.push(chunk)\n      state.length += state.objectMode ? 1 : chunk.length\n    }\n  }\n  state.ended = true\n  if (state.sync) {\n    // If we are sync, wait until next tick to emit the data.\n    // Otherwise we risk emitting data in the flow()\n    // the readable code triggers during a read() call.\n    emitReadable(stream)\n  } else {\n    // Emit 'readable' now to make sure it gets picked up.\n    state.needReadable = false\n    state.emittedReadable = true\n    // We have to emit readable now that we are EOF. Modules\n    // in the ecosystem (e.g. dicer) rely on this event being sync.\n    emitReadable_(stream)\n  }\n}\n\n// Don't emit readable right away in sync mode, because this can trigger\n// another read() call => stack overflow.  This way, it might trigger\n// a nextTick recursion warning, but that's not so bad.\nfunction emitReadable(stream) {\n  const state = stream._readableState\n  debug('emitReadable', state.needReadable, state.emittedReadable)\n  state.needReadable = false\n  if (!state.emittedReadable) {\n    debug('emitReadable', state.flowing)\n    state.emittedReadable = true\n    process.nextTick(emitReadable_, stream)\n  }\n}\nfunction emitReadable_(stream) {\n  const state = stream._readableState\n  debug('emitReadable_', state.destroyed, state.length, state.ended)\n  if (!state.destroyed && !state.errored && (state.length || state.ended)) {\n    stream.emit('readable')\n    state.emittedReadable = false\n  }\n\n  // The stream needs another readable event if:\n  // 1. It is not flowing, as the flow mechanism will take\n  //    care of it.\n  // 2. It is not ended.\n  // 3. It is below the highWaterMark, so we can schedule\n  //    another readable later.\n  state.needReadable = !state.flowing && !state.ended && state.length <= state.highWaterMark\n  flow(stream)\n}\n\n// At this point, the user has presumably seen the 'readable' event,\n// and called read() to consume some data.  that may have triggered\n// in turn another _read(n) call, in which case reading = true if\n// it's in progress.\n// However, if we're not ended, or reading, and the length < hwm,\n// then go ahead and try to read some more preemptively.\nfunction maybeReadMore(stream, state) {\n  if (!state.readingMore && state.constructed) {\n    state.readingMore = true\n    process.nextTick(maybeReadMore_, stream, state)\n  }\n}\nfunction maybeReadMore_(stream, state) {\n  // Attempt to read more data if we should.\n  //\n  // The conditions for reading more data are (one of):\n  // - Not enough data buffered (state.length < state.highWaterMark). The loop\n  //   is responsible for filling the buffer with enough data if such data\n  //   is available. If highWaterMark is 0 and we are not in the flowing mode\n  //   we should _not_ attempt to buffer any extra data. We'll get more data\n  //   when the stream consumer calls read() instead.\n  // - No data in the buffer, and the stream is in flowing mode. In this mode\n  //   the loop below is responsible for ensuring read() is called. Failing to\n  //   call read here would abort the flow and there's no other mechanism for\n  //   continuing the flow if the stream consumer has just subscribed to the\n  //   'data' event.\n  //\n  // In addition to the above conditions to keep reading data, the following\n  // conditions prevent the data from being read:\n  // - The stream has ended (state.ended).\n  // - There is already a pending 'read' operation (state.reading). This is a\n  //   case where the stream has called the implementation defined _read()\n  //   method, but they are processing the call asynchronously and have _not_\n  //   called push() with new data. In this case we skip performing more\n  //   read()s. The execution ends in this method again after the _read() ends\n  //   up calling push() with more data.\n  while (\n    !state.reading &&\n    !state.ended &&\n    (state.length < state.highWaterMark || (state.flowing && state.length === 0))\n  ) {\n    const len = state.length\n    debug('maybeReadMore read 0')\n    stream.read(0)\n    if (len === state.length)\n      // Didn't get any data, stop spinning.\n      break\n  }\n  state.readingMore = false\n}\n\n// Abstract method.  to be overridden in specific implementation classes.\n// call cb(er, data) where data is <= n in length.\n// for virtual (non-string, non-buffer) streams, \"length\" is somewhat\n// arbitrary, and perhaps not very meaningful.\nReadable.prototype._read = function (n) {\n  throw new ERR_METHOD_NOT_IMPLEMENTED('_read()')\n}\nReadable.prototype.pipe = function (dest, pipeOpts) {\n  const src = this\n  const state = this._readableState\n  if (state.pipes.length === 1) {\n    if (!state.multiAwaitDrain) {\n      state.multiAwaitDrain = true\n      state.awaitDrainWriters = new SafeSet(state.awaitDrainWriters ? [state.awaitDrainWriters] : [])\n    }\n  }\n  state.pipes.push(dest)\n  debug('pipe count=%d opts=%j', state.pipes.length, pipeOpts)\n  const doEnd = (!pipeOpts || pipeOpts.end !== false) && dest !== process.stdout && dest !== process.stderr\n  const endFn = doEnd ? onend : unpipe\n  if (state.endEmitted) process.nextTick(endFn)\n  else src.once('end', endFn)\n  dest.on('unpipe', onunpipe)\n  function onunpipe(readable, unpipeInfo) {\n    debug('onunpipe')\n    if (readable === src) {\n      if (unpipeInfo && unpipeInfo.hasUnpiped === false) {\n        unpipeInfo.hasUnpiped = true\n        cleanup()\n      }\n    }\n  }\n  function onend() {\n    debug('onend')\n    dest.end()\n  }\n  let ondrain\n  let cleanedUp = false\n  function cleanup() {\n    debug('cleanup')\n    // Cleanup event handlers once the pipe is broken.\n    dest.removeListener('close', onclose)\n    dest.removeListener('finish', onfinish)\n    if (ondrain) {\n      dest.removeListener('drain', ondrain)\n    }\n    dest.removeListener('error', onerror)\n    dest.removeListener('unpipe', onunpipe)\n    src.removeListener('end', onend)\n    src.removeListener('end', unpipe)\n    src.removeListener('data', ondata)\n    cleanedUp = true\n\n    // If the reader is waiting for a drain event from this\n    // specific writer, then it would cause it to never start\n    // flowing again.\n    // So, if this is awaiting a drain, then we just call it now.\n    // If we don't know, then assume that we are waiting for one.\n    if (ondrain && state.awaitDrainWriters && (!dest._writableState || dest._writableState.needDrain)) ondrain()\n  }\n  function pause() {\n    // If the user unpiped during `dest.write()`, it is possible\n    // to get stuck in a permanently paused state if that write\n    // also returned false.\n    // => Check whether `dest` is still a piping destination.\n    if (!cleanedUp) {\n      if (state.pipes.length === 1 && state.pipes[0] === dest) {\n        debug('false write response, pause', 0)\n        state.awaitDrainWriters = dest\n        state.multiAwaitDrain = false\n      } else if (state.pipes.length > 1 && state.pipes.includes(dest)) {\n        debug('false write response, pause', state.awaitDrainWriters.size)\n        state.awaitDrainWriters.add(dest)\n      }\n      src.pause()\n    }\n    if (!ondrain) {\n      // When the dest drains, it reduces the awaitDrain counter\n      // on the source.  This would be more elegant with a .once()\n      // handler in flow(), but adding and removing repeatedly is\n      // too slow.\n      ondrain = pipeOnDrain(src, dest)\n      dest.on('drain', ondrain)\n    }\n  }\n  src.on('data', ondata)\n  function ondata(chunk) {\n    debug('ondata')\n    const ret = dest.write(chunk)\n    debug('dest.write', ret)\n    if (ret === false) {\n      pause()\n    }\n  }\n\n  // If the dest has an error, then stop piping into it.\n  // However, don't suppress the throwing behavior for this.\n  function onerror(er) {\n    debug('onerror', er)\n    unpipe()\n    dest.removeListener('error', onerror)\n    if (dest.listenerCount('error') === 0) {\n      const s = dest._writableState || dest._readableState\n      if (s && !s.errorEmitted) {\n        // User incorrectly emitted 'error' directly on the stream.\n        errorOrDestroy(dest, er)\n      } else {\n        dest.emit('error', er)\n      }\n    }\n  }\n\n  // Make sure our error handler is attached before userland ones.\n  prependListener(dest, 'error', onerror)\n\n  // Both close and finish should trigger unpipe, but only once.\n  function onclose() {\n    dest.removeListener('finish', onfinish)\n    unpipe()\n  }\n  dest.once('close', onclose)\n  function onfinish() {\n    debug('onfinish')\n    dest.removeListener('close', onclose)\n    unpipe()\n  }\n  dest.once('finish', onfinish)\n  function unpipe() {\n    debug('unpipe')\n    src.unpipe(dest)\n  }\n\n  // Tell the dest that it's being piped to.\n  dest.emit('pipe', src)\n\n  // Start the flow if it hasn't been started already.\n\n  if (dest.writableNeedDrain === true) {\n    pause()\n  } else if (!state.flowing) {\n    debug('pipe resume')\n    src.resume()\n  }\n  return dest\n}\nfunction pipeOnDrain(src, dest) {\n  return function pipeOnDrainFunctionResult() {\n    const state = src._readableState\n\n    // `ondrain` will call directly,\n    // `this` maybe not a reference to dest,\n    // so we use the real dest here.\n    if (state.awaitDrainWriters === dest) {\n      debug('pipeOnDrain', 1)\n      state.awaitDrainWriters = null\n    } else if (state.multiAwaitDrain) {\n      debug('pipeOnDrain', state.awaitDrainWriters.size)\n      state.awaitDrainWriters.delete(dest)\n    }\n    if ((!state.awaitDrainWriters || state.awaitDrainWriters.size === 0) && src.listenerCount('data')) {\n      src.resume()\n    }\n  }\n}\nReadable.prototype.unpipe = function (dest) {\n  const state = this._readableState\n  const unpipeInfo = {\n    hasUnpiped: false\n  }\n\n  // If we're not piping anywhere, then do nothing.\n  if (state.pipes.length === 0) return this\n  if (!dest) {\n    // remove all.\n    const dests = state.pipes\n    state.pipes = []\n    this.pause()\n    for (let i = 0; i < dests.length; i++)\n      dests[i].emit('unpipe', this, {\n        hasUnpiped: false\n      })\n    return this\n  }\n\n  // Try to find the right one.\n  const index = ArrayPrototypeIndexOf(state.pipes, dest)\n  if (index === -1) return this\n  state.pipes.splice(index, 1)\n  if (state.pipes.length === 0) this.pause()\n  dest.emit('unpipe', this, unpipeInfo)\n  return this\n}\n\n// Set up data events if they are asked for\n// Ensure readable listeners eventually get something.\nReadable.prototype.on = function (ev, fn) {\n  const res = Stream.prototype.on.call(this, ev, fn)\n  const state = this._readableState\n  if (ev === 'data') {\n    // Update readableListening so that resume() may be a no-op\n    // a few lines down. This is needed to support once('readable').\n    state.readableListening = this.listenerCount('readable') > 0\n\n    // Try start flowing on next tick if stream isn't explicitly paused.\n    if (state.flowing !== false) this.resume()\n  } else if (ev === 'readable') {\n    if (!state.endEmitted && !state.readableListening) {\n      state.readableListening = state.needReadable = true\n      state.flowing = false\n      state.emittedReadable = false\n      debug('on readable', state.length, state.reading)\n      if (state.length) {\n        emitReadable(this)\n      } else if (!state.reading) {\n        process.nextTick(nReadingNextTick, this)\n      }\n    }\n  }\n  return res\n}\nReadable.prototype.addListener = Readable.prototype.on\nReadable.prototype.removeListener = function (ev, fn) {\n  const res = Stream.prototype.removeListener.call(this, ev, fn)\n  if (ev === 'readable') {\n    // We need to check if there is someone still listening to\n    // readable and reset the state. However this needs to happen\n    // after readable has been emitted but before I/O (nextTick) to\n    // support once('readable', fn) cycles. This means that calling\n    // resume within the same tick will have no\n    // effect.\n    process.nextTick(updateReadableListening, this)\n  }\n  return res\n}\nReadable.prototype.off = Readable.prototype.removeListener\nReadable.prototype.removeAllListeners = function (ev) {\n  const res = Stream.prototype.removeAllListeners.apply(this, arguments)\n  if (ev === 'readable' || ev === undefined) {\n    // We need to check if there is someone still listening to\n    // readable and reset the state. However this needs to happen\n    // after readable has been emitted but before I/O (nextTick) to\n    // support once('readable', fn) cycles. This means that calling\n    // resume within the same tick will have no\n    // effect.\n    process.nextTick(updateReadableListening, this)\n  }\n  return res\n}\nfunction updateReadableListening(self) {\n  const state = self._readableState\n  state.readableListening = self.listenerCount('readable') > 0\n  if (state.resumeScheduled && state[kPaused] === false) {\n    // Flowing needs to be set to true now, otherwise\n    // the upcoming resume will not flow.\n    state.flowing = true\n\n    // Crude way to check if we should resume.\n  } else if (self.listenerCount('data') > 0) {\n    self.resume()\n  } else if (!state.readableListening) {\n    state.flowing = null\n  }\n}\nfunction nReadingNextTick(self) {\n  debug('readable nexttick read 0')\n  self.read(0)\n}\n\n// pause() and resume() are remnants of the legacy readable stream API\n// If the user uses them, then switch into old mode.\nReadable.prototype.resume = function () {\n  const state = this._readableState\n  if (!state.flowing) {\n    debug('resume')\n    // We flow only if there is no one listening\n    // for readable, but we still have to call\n    // resume().\n    state.flowing = !state.readableListening\n    resume(this, state)\n  }\n  state[kPaused] = false\n  return this\n}\nfunction resume(stream, state) {\n  if (!state.resumeScheduled) {\n    state.resumeScheduled = true\n    process.nextTick(resume_, stream, state)\n  }\n}\nfunction resume_(stream, state) {\n  debug('resume', state.reading)\n  if (!state.reading) {\n    stream.read(0)\n  }\n  state.resumeScheduled = false\n  stream.emit('resume')\n  flow(stream)\n  if (state.flowing && !state.reading) stream.read(0)\n}\nReadable.prototype.pause = function () {\n  debug('call pause flowing=%j', this._readableState.flowing)\n  if (this._readableState.flowing !== false) {\n    debug('pause')\n    this._readableState.flowing = false\n    this.emit('pause')\n  }\n  this._readableState[kPaused] = true\n  return this\n}\nfunction flow(stream) {\n  const state = stream._readableState\n  debug('flow', state.flowing)\n  while (state.flowing && stream.read() !== null);\n}\n\n// Wrap an old-style stream as the async data source.\n// This is *not* part of the readable stream interface.\n// It is an ugly unfortunate mess of history.\nReadable.prototype.wrap = function (stream) {\n  let paused = false\n\n  // TODO (ronag): Should this.destroy(err) emit\n  // 'error' on the wrapped stream? Would require\n  // a static factory method, e.g. Readable.wrap(stream).\n\n  stream.on('data', (chunk) => {\n    if (!this.push(chunk) && stream.pause) {\n      paused = true\n      stream.pause()\n    }\n  })\n  stream.on('end', () => {\n    this.push(null)\n  })\n  stream.on('error', (err) => {\n    errorOrDestroy(this, err)\n  })\n  stream.on('close', () => {\n    this.destroy()\n  })\n  stream.on('destroy', () => {\n    this.destroy()\n  })\n  this._read = () => {\n    if (paused && stream.resume) {\n      paused = false\n      stream.resume()\n    }\n  }\n\n  // Proxy all the other methods. Important when wrapping filters and duplexes.\n  const streamKeys = ObjectKeys(stream)\n  for (let j = 1; j < streamKeys.length; j++) {\n    const i = streamKeys[j]\n    if (this[i] === undefined && typeof stream[i] === 'function') {\n      this[i] = stream[i].bind(stream)\n    }\n  }\n  return this\n}\nReadable.prototype[SymbolAsyncIterator] = function () {\n  return streamToAsyncIterator(this)\n}\nReadable.prototype.iterator = function (options) {\n  if (options !== undefined) {\n    validateObject(options, 'options')\n  }\n  return streamToAsyncIterator(this, options)\n}\nfunction streamToAsyncIterator(stream, options) {\n  if (typeof stream.read !== 'function') {\n    stream = Readable.wrap(stream, {\n      objectMode: true\n    })\n  }\n  const iter = createAsyncIterator(stream, options)\n  iter.stream = stream\n  return iter\n}\nasync function* createAsyncIterator(stream, options) {\n  let callback = nop\n  function next(resolve) {\n    if (this === stream) {\n      callback()\n      callback = nop\n    } else {\n      callback = resolve\n    }\n  }\n  stream.on('readable', next)\n  let error\n  const cleanup = eos(\n    stream,\n    {\n      writable: false\n    },\n    (err) => {\n      error = err ? aggregateTwoErrors(error, err) : null\n      callback()\n      callback = nop\n    }\n  )\n  try {\n    while (true) {\n      const chunk = stream.destroyed ? null : stream.read()\n      if (chunk !== null) {\n        yield chunk\n      } else if (error) {\n        throw error\n      } else if (error === null) {\n        return\n      } else {\n        await new Promise(next)\n      }\n    }\n  } catch (err) {\n    error = aggregateTwoErrors(error, err)\n    throw error\n  } finally {\n    if (\n      (error || (options === null || options === undefined ? undefined : options.destroyOnReturn) !== false) &&\n      (error === undefined || stream._readableState.autoDestroy)\n    ) {\n      destroyImpl.destroyer(stream, null)\n    } else {\n      stream.off('readable', next)\n      cleanup()\n    }\n  }\n}\n\n// Making it explicit these properties are not enumerable\n// because otherwise some prototype manipulation in\n// userland will fail.\nObjectDefineProperties(Readable.prototype, {\n  readable: {\n    __proto__: null,\n    get() {\n      const r = this._readableState\n      // r.readable === false means that this is part of a Duplex stream\n      // where the readable side was disabled upon construction.\n      // Compat. The user might manually disable readable side through\n      // deprecated setter.\n      return !!r && r.readable !== false && !r.destroyed && !r.errorEmitted && !r.endEmitted\n    },\n    set(val) {\n      // Backwards compat.\n      if (this._readableState) {\n        this._readableState.readable = !!val\n      }\n    }\n  },\n  readableDidRead: {\n    __proto__: null,\n    enumerable: false,\n    get: function () {\n      return this._readableState.dataEmitted\n    }\n  },\n  readableAborted: {\n    __proto__: null,\n    enumerable: false,\n    get: function () {\n      return !!(\n        this._readableState.readable !== false &&\n        (this._readableState.destroyed || this._readableState.errored) &&\n        !this._readableState.endEmitted\n      )\n    }\n  },\n  readableHighWaterMark: {\n    __proto__: null,\n    enumerable: false,\n    get: function () {\n      return this._readableState.highWaterMark\n    }\n  },\n  readableBuffer: {\n    __proto__: null,\n    enumerable: false,\n    get: function () {\n      return this._readableState && this._readableState.buffer\n    }\n  },\n  readableFlowing: {\n    __proto__: null,\n    enumerable: false,\n    get: function () {\n      return this._readableState.flowing\n    },\n    set: function (state) {\n      if (this._readableState) {\n        this._readableState.flowing = state\n      }\n    }\n  },\n  readableLength: {\n    __proto__: null,\n    enumerable: false,\n    get() {\n      return this._readableState.length\n    }\n  },\n  readableObjectMode: {\n    __proto__: null,\n    enumerable: false,\n    get() {\n      return this._readableState ? this._readableState.objectMode : false\n    }\n  },\n  readableEncoding: {\n    __proto__: null,\n    enumerable: false,\n    get() {\n      return this._readableState ? this._readableState.encoding : null\n    }\n  },\n  errored: {\n    __proto__: null,\n    enumerable: false,\n    get() {\n      return this._readableState ? this._readableState.errored : null\n    }\n  },\n  closed: {\n    __proto__: null,\n    get() {\n      return this._readableState ? this._readableState.closed : false\n    }\n  },\n  destroyed: {\n    __proto__: null,\n    enumerable: false,\n    get() {\n      return this._readableState ? this._readableState.destroyed : false\n    },\n    set(value) {\n      // We ignore the value if the stream\n      // has not been initialized yet.\n      if (!this._readableState) {\n        return\n      }\n\n      // Backward compatibility, the user is explicitly\n      // managing destroyed.\n      this._readableState.destroyed = value\n    }\n  },\n  readableEnded: {\n    __proto__: null,\n    enumerable: false,\n    get() {\n      return this._readableState ? this._readableState.endEmitted : false\n    }\n  }\n})\nObjectDefineProperties(ReadableState.prototype, {\n  // Legacy getter for `pipesCount`.\n  pipesCount: {\n    __proto__: null,\n    get() {\n      return this.pipes.length\n    }\n  },\n  // Legacy property for `paused`.\n  paused: {\n    __proto__: null,\n    get() {\n      return this[kPaused] !== false\n    },\n    set(value) {\n      this[kPaused] = !!value\n    }\n  }\n})\n\n// Exposed for testing purposes only.\nReadable._fromList = fromList\n\n// Pluck off n bytes from an array of buffers.\n// Length is the combined lengths of all the buffers in the list.\n// This function is designed to be inlinable, so please take care when making\n// changes to the function body.\nfunction fromList(n, state) {\n  // nothing buffered.\n  if (state.length === 0) return null\n  let ret\n  if (state.objectMode) ret = state.buffer.shift()\n  else if (!n || n >= state.length) {\n    // Read it all, truncate the list.\n    if (state.decoder) ret = state.buffer.join('')\n    else if (state.buffer.length === 1) ret = state.buffer.first()\n    else ret = state.buffer.concat(state.length)\n    state.buffer.clear()\n  } else {\n    // read part of list.\n    ret = state.buffer.consume(n, state.decoder)\n  }\n  return ret\n}\nfunction endReadable(stream) {\n  const state = stream._readableState\n  debug('endReadable', state.endEmitted)\n  if (!state.endEmitted) {\n    state.ended = true\n    process.nextTick(endReadableNT, state, stream)\n  }\n}\nfunction endReadableNT(state, stream) {\n  debug('endReadableNT', state.endEmitted, state.length)\n\n  // Check that we didn't get one last unshift.\n  if (!state.errored && !state.closeEmitted && !state.endEmitted && state.length === 0) {\n    state.endEmitted = true\n    stream.emit('end')\n    if (stream.writable && stream.allowHalfOpen === false) {\n      process.nextTick(endWritableNT, stream)\n    } else if (state.autoDestroy) {\n      // In case of duplex streams we need a way to detect\n      // if the writable side is ready for autoDestroy as well.\n      const wState = stream._writableState\n      const autoDestroy =\n        !wState ||\n        (wState.autoDestroy &&\n          // We don't expect the writable to ever 'finish'\n          // if writable is explicitly set to false.\n          (wState.finished || wState.writable === false))\n      if (autoDestroy) {\n        stream.destroy()\n      }\n    }\n  }\n}\nfunction endWritableNT(stream) {\n  const writable = stream.writable && !stream.writableEnded && !stream.destroyed\n  if (writable) {\n    stream.end()\n  }\n}\nReadable.from = function (iterable, opts) {\n  return from(Readable, iterable, opts)\n}\nlet webStreamsAdapters\n\n// Lazy to avoid circular references\nfunction lazyWebStreams() {\n  if (webStreamsAdapters === undefined) webStreamsAdapters = {}\n  return webStreamsAdapters\n}\nReadable.fromWeb = function (readableStream, options) {\n  return lazyWebStreams().newStreamReadableFromReadableStream(readableStream, options)\n}\nReadable.toWeb = function (streamReadable, options) {\n  return lazyWebStreams().newReadableStreamFromStreamReadable(streamReadable, options)\n}\nReadable.wrap = function (src, options) {\n  var _ref, _src$readableObjectMo\n  return new Readable({\n    objectMode:\n      (_ref =\n        (_src$readableObjectMo = src.readableObjectMode) !== null && _src$readableObjectMo !== undefined\n          ? _src$readableObjectMo\n          : src.objectMode) !== null && _ref !== undefined\n        ? _ref\n        : true,\n    ...options,\n    destroy(err, callback) {\n      destroyImpl.destroyer(src, err)\n      callback(err)\n    }\n  }).wrap(src)\n}\n","/* replacement start */\n\nconst process = require('process/')\n\n/* replacement end */\n\n;('use strict')\nconst bufferModule = require('buffer')\nconst {\n  isReadable,\n  isWritable,\n  isIterable,\n  isNodeStream,\n  isReadableNodeStream,\n  isWritableNodeStream,\n  isDuplexNodeStream,\n  isReadableStream,\n  isWritableStream\n} = require('./utils')\nconst eos = require('./end-of-stream')\nconst {\n  AbortError,\n  codes: { ERR_INVALID_ARG_TYPE, ERR_INVALID_RETURN_VALUE }\n} = require('../../ours/errors')\nconst { destroyer } = require('./destroy')\nconst Duplex = require('./duplex')\nconst Readable = require('./readable')\nconst Writable = require('./writable')\nconst { createDeferredPromise } = require('../../ours/util')\nconst from = require('./from')\nconst Blob = globalThis.Blob || bufferModule.Blob\nconst isBlob =\n  typeof Blob !== 'undefined'\n    ? function isBlob(b) {\n        return b instanceof Blob\n      }\n    : function isBlob(b) {\n        return false\n      }\nconst AbortController = globalThis.AbortController || require('abort-controller').AbortController\nconst { FunctionPrototypeCall } = require('../../ours/primordials')\n\n// This is needed for pre node 17.\nclass Duplexify extends Duplex {\n  constructor(options) {\n    super(options)\n\n    // https://github.com/nodejs/node/pull/34385\n\n    if ((options === null || options === undefined ? undefined : options.readable) === false) {\n      this._readableState.readable = false\n      this._readableState.ended = true\n      this._readableState.endEmitted = true\n    }\n    if ((options === null || options === undefined ? undefined : options.writable) === false) {\n      this._writableState.writable = false\n      this._writableState.ending = true\n      this._writableState.ended = true\n      this._writableState.finished = true\n    }\n  }\n}\nmodule.exports = function duplexify(body, name) {\n  if (isDuplexNodeStream(body)) {\n    return body\n  }\n  if (isReadableNodeStream(body)) {\n    return _duplexify({\n      readable: body\n    })\n  }\n  if (isWritableNodeStream(body)) {\n    return _duplexify({\n      writable: body\n    })\n  }\n  if (isNodeStream(body)) {\n    return _duplexify({\n      writable: false,\n      readable: false\n    })\n  }\n  if (isReadableStream(body)) {\n    return _duplexify({\n      readable: Readable.fromWeb(body)\n    })\n  }\n  if (isWritableStream(body)) {\n    return _duplexify({\n      writable: Writable.fromWeb(body)\n    })\n  }\n  if (typeof body === 'function') {\n    const { value, write, final, destroy } = fromAsyncGen(body)\n    if (isIterable(value)) {\n      return from(Duplexify, value, {\n        // TODO (ronag): highWaterMark?\n        objectMode: true,\n        write,\n        final,\n        destroy\n      })\n    }\n    const then = value === null || value === undefined ? undefined : value.then\n    if (typeof then === 'function') {\n      let d\n      const promise = FunctionPrototypeCall(\n        then,\n        value,\n        (val) => {\n          if (val != null) {\n            throw new ERR_INVALID_RETURN_VALUE('nully', 'body', val)\n          }\n        },\n        (err) => {\n          destroyer(d, err)\n        }\n      )\n      return (d = new Duplexify({\n        // TODO (ronag): highWaterMark?\n        objectMode: true,\n        readable: false,\n        write,\n        final(cb) {\n          final(async () => {\n            try {\n              await promise\n              process.nextTick(cb, null)\n            } catch (err) {\n              process.nextTick(cb, err)\n            }\n          })\n        },\n        destroy\n      }))\n    }\n    throw new ERR_INVALID_RETURN_VALUE('Iterable, AsyncIterable or AsyncFunction', name, value)\n  }\n  if (isBlob(body)) {\n    return duplexify(body.arrayBuffer())\n  }\n  if (isIterable(body)) {\n    return from(Duplexify, body, {\n      // TODO (ronag): highWaterMark?\n      objectMode: true,\n      writable: false\n    })\n  }\n  if (\n    isReadableStream(body === null || body === undefined ? undefined : body.readable) &&\n    isWritableStream(body === null || body === undefined ? undefined : body.writable)\n  ) {\n    return Duplexify.fromWeb(body)\n  }\n  if (\n    typeof (body === null || body === undefined ? undefined : body.writable) === 'object' ||\n    typeof (body === null || body === undefined ? undefined : body.readable) === 'object'\n  ) {\n    const readable =\n      body !== null && body !== undefined && body.readable\n        ? isReadableNodeStream(body === null || body === undefined ? undefined : body.readable)\n          ? body === null || body === undefined\n            ? undefined\n            : body.readable\n          : duplexify(body.readable)\n        : undefined\n    const writable =\n      body !== null && body !== undefined && body.writable\n        ? isWritableNodeStream(body === null || body === undefined ? undefined : body.writable)\n          ? body === null || body === undefined\n            ? undefined\n            : body.writable\n          : duplexify(body.writable)\n        : undefined\n    return _duplexify({\n      readable,\n      writable\n    })\n  }\n  const then = body === null || body === undefined ? undefined : body.then\n  if (typeof then === 'function') {\n    let d\n    FunctionPrototypeCall(\n      then,\n      body,\n      (val) => {\n        if (val != null) {\n          d.push(val)\n        }\n        d.push(null)\n      },\n      (err) => {\n        destroyer(d, err)\n      }\n    )\n    return (d = new Duplexify({\n      objectMode: true,\n      writable: false,\n      read() {}\n    }))\n  }\n  throw new ERR_INVALID_ARG_TYPE(\n    name,\n    [\n      'Blob',\n      'ReadableStream',\n      'WritableStream',\n      'Stream',\n      'Iterable',\n      'AsyncIterable',\n      'Function',\n      '{ readable, writable } pair',\n      'Promise'\n    ],\n    body\n  )\n}\nfunction fromAsyncGen(fn) {\n  let { promise, resolve } = createDeferredPromise()\n  const ac = new AbortController()\n  const signal = ac.signal\n  const value = fn(\n    (async function* () {\n      while (true) {\n        const _promise = promise\n        promise = null\n        const { chunk, done, cb } = await _promise\n        process.nextTick(cb)\n        if (done) return\n        if (signal.aborted)\n          throw new AbortError(undefined, {\n            cause: signal.reason\n          })\n        ;({ promise, resolve } = createDeferredPromise())\n        yield chunk\n      }\n    })(),\n    {\n      signal\n    }\n  )\n  return {\n    value,\n    write(chunk, encoding, cb) {\n      const _resolve = resolve\n      resolve = null\n      _resolve({\n        chunk,\n        done: false,\n        cb\n      })\n    },\n    final(cb) {\n      const _resolve = resolve\n      resolve = null\n      _resolve({\n        done: true,\n        cb\n      })\n    },\n    destroy(err, cb) {\n      ac.abort()\n      cb(err)\n    }\n  }\n}\nfunction _duplexify(pair) {\n  const r = pair.readable && typeof pair.readable.read !== 'function' ? Readable.wrap(pair.readable) : pair.readable\n  const w = pair.writable\n  let readable = !!isReadable(r)\n  let writable = !!isWritable(w)\n  let ondrain\n  let onfinish\n  let onreadable\n  let onclose\n  let d\n  function onfinished(err) {\n    const cb = onclose\n    onclose = null\n    if (cb) {\n      cb(err)\n    } else if (err) {\n      d.destroy(err)\n    }\n  }\n\n  // TODO(ronag): Avoid double buffering.\n  // Implement Writable/Readable/Duplex traits.\n  // See, https://github.com/nodejs/node/pull/33515.\n  d = new Duplexify({\n    // TODO (ronag): highWaterMark?\n    readableObjectMode: !!(r !== null && r !== undefined && r.readableObjectMode),\n    writableObjectMode: !!(w !== null && w !== undefined && w.writableObjectMode),\n    readable,\n    writable\n  })\n  if (writable) {\n    eos(w, (err) => {\n      writable = false\n      if (err) {\n        destroyer(r, err)\n      }\n      onfinished(err)\n    })\n    d._write = function (chunk, encoding, callback) {\n      if (w.write(chunk, encoding)) {\n        callback()\n      } else {\n        ondrain = callback\n      }\n    }\n    d._final = function (callback) {\n      w.end()\n      onfinish = callback\n    }\n    w.on('drain', function () {\n      if (ondrain) {\n        const cb = ondrain\n        ondrain = null\n        cb()\n      }\n    })\n    w.on('finish', function () {\n      if (onfinish) {\n        const cb = onfinish\n        onfinish = null\n        cb()\n      }\n    })\n  }\n  if (readable) {\n    eos(r, (err) => {\n      readable = false\n      if (err) {\n        destroyer(r, err)\n      }\n      onfinished(err)\n    })\n    r.on('readable', function () {\n      if (onreadable) {\n        const cb = onreadable\n        onreadable = null\n        cb()\n      }\n    })\n    r.on('end', function () {\n      d.push(null)\n    })\n    d._read = function () {\n      while (true) {\n        const buf = r.read()\n        if (buf === null) {\n          onreadable = d._read\n          return\n        }\n        if (!d.push(buf)) {\n          return\n        }\n      }\n    }\n  }\n  d._destroy = function (err, callback) {\n    if (!err && onclose !== null) {\n      err = new AbortError()\n    }\n    onreadable = null\n    ondrain = null\n    onfinish = null\n    if (onclose === null) {\n      callback(err)\n    } else {\n      onclose = callback\n      destroyer(w, err)\n      destroyer(r, err)\n    }\n  }\n  return d\n}\n","'use strict'\n\nconst { MathFloor, NumberIsInteger } = require('../../ours/primordials')\nconst { validateInteger } = require('../validators')\nconst { ERR_INVALID_ARG_VALUE } = require('../../ours/errors').codes\nlet defaultHighWaterMarkBytes = 16 * 1024\nlet defaultHighWaterMarkObjectMode = 16\nfunction highWaterMarkFrom(options, isDuplex, duplexKey) {\n  return options.highWaterMark != null ? options.highWaterMark : isDuplex ? options[duplexKey] : null\n}\nfunction getDefaultHighWaterMark(objectMode) {\n  return objectMode ? defaultHighWaterMarkObjectMode : defaultHighWaterMarkBytes\n}\nfunction setDefaultHighWaterMark(objectMode, value) {\n  validateInteger(value, 'value', 0)\n  if (objectMode) {\n    defaultHighWaterMarkObjectMode = value\n  } else {\n    defaultHighWaterMarkBytes = value\n  }\n}\nfunction getHighWaterMark(state, options, duplexKey, isDuplex) {\n  const hwm = highWaterMarkFrom(options, isDuplex, duplexKey)\n  if (hwm != null) {\n    if (!NumberIsInteger(hwm) || hwm < 0) {\n      const name = isDuplex ? `options.${duplexKey}` : 'options.highWaterMark'\n      throw new ERR_INVALID_ARG_VALUE(name, hwm)\n    }\n    return MathFloor(hwm)\n  }\n\n  // Default value\n  return getDefaultHighWaterMark(state.objectMode)\n}\nmodule.exports = {\n  getHighWaterMark,\n  getDefaultHighWaterMark,\n  setDefaultHighWaterMark\n}\n","'use strict'\n\nconst { ArrayIsArray, ObjectSetPrototypeOf } = require('../../ours/primordials')\nconst { EventEmitter: EE } = require('events')\nfunction Stream(opts) {\n  EE.call(this, opts)\n}\nObjectSetPrototypeOf(Stream.prototype, EE.prototype)\nObjectSetPrototypeOf(Stream, EE)\nStream.prototype.pipe = function (dest, options) {\n  const source = this\n  function ondata(chunk) {\n    if (dest.writable && dest.write(chunk) === false && source.pause) {\n      source.pause()\n    }\n  }\n  source.on('data', ondata)\n  function ondrain() {\n    if (source.readable && source.resume) {\n      source.resume()\n    }\n  }\n  dest.on('drain', ondrain)\n\n  // If the 'end' option is not supplied, dest.end() will be called when\n  // source gets the 'end' or 'close' events.  Only dest.end() once.\n  if (!dest._isStdio && (!options || options.end !== false)) {\n    source.on('end', onend)\n    source.on('close', onclose)\n  }\n  let didOnEnd = false\n  function onend() {\n    if (didOnEnd) return\n    didOnEnd = true\n    dest.end()\n  }\n  function onclose() {\n    if (didOnEnd) return\n    didOnEnd = true\n    if (typeof dest.destroy === 'function') dest.destroy()\n  }\n\n  // Don't leave dangling pipes when there are errors.\n  function onerror(er) {\n    cleanup()\n    if (EE.listenerCount(this, 'error') === 0) {\n      this.emit('error', er)\n    }\n  }\n  prependListener(source, 'error', onerror)\n  prependListener(dest, 'error', onerror)\n\n  // Remove all the event listeners that were added.\n  function cleanup() {\n    source.removeListener('data', ondata)\n    dest.removeListener('drain', ondrain)\n    source.removeListener('end', onend)\n    source.removeListener('close', onclose)\n    source.removeListener('error', onerror)\n    dest.removeListener('error', onerror)\n    source.removeListener('end', cleanup)\n    source.removeListener('close', cleanup)\n    dest.removeListener('close', cleanup)\n  }\n  source.on('end', cleanup)\n  source.on('close', cleanup)\n  dest.on('close', cleanup)\n  dest.emit('pipe', source)\n\n  // Allow for unix-like usage: A.pipe(B).pipe(C)\n  return dest\n}\nfunction prependListener(emitter, event, fn) {\n  // Sadly this is not cacheable as some libraries bundle their own\n  // event emitter implementation with them.\n  if (typeof emitter.prependListener === 'function') return emitter.prependListener(event, fn)\n\n  // This is a hack to make sure that our error handler is attached before any\n  // userland ones.  NEVER DO THIS. This is here only because this code needs\n  // to continue to work with older versions of Node.js that do not include\n  // the prependListener() method. The goal is to eventually remove this hack.\n  if (!emitter._events || !emitter._events[event]) emitter.on(event, fn)\n  else if (ArrayIsArray(emitter._events[event])) emitter._events[event].unshift(fn)\n  else emitter._events[event] = [fn, emitter._events[event]]\n}\nmodule.exports = {\n  Stream,\n  prependListener\n}\n","'use strict'\n\nexports.byteLength = byteLength\nexports.toByteArray = toByteArray\nexports.fromByteArray = fromByteArray\n\nvar lookup = []\nvar revLookup = []\nvar Arr = typeof Uint8Array !== 'undefined' ? Uint8Array : Array\n\nvar code = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/'\nfor (var i = 0, len = code.length; i < len; ++i) {\n  lookup[i] = code[i]\n  revLookup[code.charCodeAt(i)] = i\n}\n\n// Support decoding URL-safe base64 strings, as Node.js does.\n// See: https://en.wikipedia.org/wiki/Base64#URL_applications\nrevLookup['-'.charCodeAt(0)] = 62\nrevLookup['_'.charCodeAt(0)] = 63\n\nfunction getLens (b64) {\n  var len = b64.length\n\n  if (len % 4 > 0) {\n    throw new Error('Invalid string. Length must be a multiple of 4')\n  }\n\n  // Trim off extra bytes after placeholder bytes are found\n  // See: https://github.com/beatgammit/base64-js/issues/42\n  var validLen = b64.indexOf('=')\n  if (validLen === -1) validLen = len\n\n  var placeHoldersLen = validLen === len\n    ? 0\n    : 4 - (validLen % 4)\n\n  return [validLen, placeHoldersLen]\n}\n\n// base64 is 4/3 + up to two characters of the original data\nfunction byteLength (b64) {\n  var lens = getLens(b64)\n  var validLen = lens[0]\n  var placeHoldersLen = lens[1]\n  return ((validLen + placeHoldersLen) * 3 / 4) - placeHoldersLen\n}\n\nfunction _byteLength (b64, validLen, placeHoldersLen) {\n  return ((validLen + placeHoldersLen) * 3 / 4) - placeHoldersLen\n}\n\nfunction toByteArray (b64) {\n  var tmp\n  var lens = getLens(b64)\n  var validLen = lens[0]\n  var placeHoldersLen = lens[1]\n\n  var arr = new Arr(_byteLength(b64, validLen, placeHoldersLen))\n\n  var curByte = 0\n\n  // if there are placeholders, only get up to the last complete 4 chars\n  var len = placeHoldersLen > 0\n    ? validLen - 4\n    : validLen\n\n  var i\n  for (i = 0; i < len; i += 4) {\n    tmp =\n      (revLookup[b64.charCodeAt(i)] << 18) |\n      (revLookup[b64.charCodeAt(i + 1)] << 12) |\n      (revLookup[b64.charCodeAt(i + 2)] << 6) |\n      revLookup[b64.charCodeAt(i + 3)]\n    arr[curByte++] = (tmp >> 16) & 0xFF\n    arr[curByte++] = (tmp >> 8) & 0xFF\n    arr[curByte++] = tmp & 0xFF\n  }\n\n  if (placeHoldersLen === 2) {\n    tmp =\n      (revLookup[b64.charCodeAt(i)] << 2) |\n      (revLookup[b64.charCodeAt(i + 1)] >> 4)\n    arr[curByte++] = tmp & 0xFF\n  }\n\n  if (placeHoldersLen === 1) {\n    tmp =\n      (revLookup[b64.charCodeAt(i)] << 10) |\n      (revLookup[b64.charCodeAt(i + 1)] << 4) |\n      (revLookup[b64.charCodeAt(i + 2)] >> 2)\n    arr[curByte++] = (tmp >> 8) & 0xFF\n    arr[curByte++] = tmp & 0xFF\n  }\n\n  return arr\n}\n\nfunction tripletToBase64 (num) {\n  return lookup[num >> 18 & 0x3F] +\n    lookup[num >> 12 & 0x3F] +\n    lookup[num >> 6 & 0x3F] +\n    lookup[num & 0x3F]\n}\n\nfunction encodeChunk (uint8, start, end) {\n  var tmp\n  var output = []\n  for (var i = start; i < end; i += 3) {\n    tmp =\n      ((uint8[i] << 16) & 0xFF0000) +\n      ((uint8[i + 1] << 8) & 0xFF00) +\n      (uint8[i + 2] & 0xFF)\n    output.push(tripletToBase64(tmp))\n  }\n  return output.join('')\n}\n\nfunction fromByteArray (uint8) {\n  var tmp\n  var len = uint8.length\n  var extraBytes = len % 3 // if we have 1 byte left, pad 2 bytes\n  var parts = []\n  var maxChunkLength = 16383 // must be multiple of 3\n\n  // go through the array every three bytes, we'll deal with trailing stuff later\n  for (var i = 0, len2 = len - extraBytes; i < len2; i += maxChunkLength) {\n    parts.push(encodeChunk(uint8, i, (i + maxChunkLength) > len2 ? len2 : (i + maxChunkLength)))\n  }\n\n  // pad the end with zeros, but make sure to not forget the extra bytes\n  if (extraBytes === 1) {\n    tmp = uint8[len - 1]\n    parts.push(\n      lookup[tmp >> 2] +\n      lookup[(tmp << 4) & 0x3F] +\n      '=='\n    )\n  } else if (extraBytes === 2) {\n    tmp = (uint8[len - 2] << 8) + uint8[len - 1]\n    parts.push(\n      lookup[tmp >> 10] +\n      lookup[(tmp >> 4) & 0x3F] +\n      lookup[(tmp << 2) & 0x3F] +\n      '='\n    )\n  }\n\n  return parts.join('')\n}\n","'use strict'\n\n/* replacement start */\n\nconst process = require('process/')\n\n/* replacement end */\n\nconst { PromisePrototypeThen, SymbolAsyncIterator, SymbolIterator } = require('../../ours/primordials')\nconst { Buffer } = require('buffer')\nconst { ERR_INVALID_ARG_TYPE, ERR_STREAM_NULL_VALUES } = require('../../ours/errors').codes\nfunction from(Readable, iterable, opts) {\n  let iterator\n  if (typeof iterable === 'string' || iterable instanceof Buffer) {\n    return new Readable({\n      objectMode: true,\n      ...opts,\n      read() {\n        this.push(iterable)\n        this.push(null)\n      }\n    })\n  }\n  let isAsync\n  if (iterable && iterable[SymbolAsyncIterator]) {\n    isAsync = true\n    iterator = iterable[SymbolAsyncIterator]()\n  } else if (iterable && iterable[SymbolIterator]) {\n    isAsync = false\n    iterator = iterable[SymbolIterator]()\n  } else {\n    throw new ERR_INVALID_ARG_TYPE('iterable', ['Iterable'], iterable)\n  }\n  const readable = new Readable({\n    objectMode: true,\n    highWaterMark: 1,\n    // TODO(ronag): What options should be allowed?\n    ...opts\n  })\n\n  // Flag to protect against _read\n  // being called before last iteration completion.\n  let reading = false\n  readable._read = function () {\n    if (!reading) {\n      reading = true\n      next()\n    }\n  }\n  readable._destroy = function (error, cb) {\n    PromisePrototypeThen(\n      close(error),\n      () => process.nextTick(cb, error),\n      // nextTick is here in case cb throws\n      (e) => process.nextTick(cb, e || error)\n    )\n  }\n  async function close(error) {\n    const hadError = error !== undefined && error !== null\n    const hasThrow = typeof iterator.throw === 'function'\n    if (hadError && hasThrow) {\n      const { value, done } = await iterator.throw(error)\n      await value\n      if (done) {\n        return\n      }\n    }\n    if (typeof iterator.return === 'function') {\n      const { value } = await iterator.return()\n      await value\n    }\n  }\n  async function next() {\n    for (;;) {\n      try {\n        const { value, done } = isAsync ? await iterator.next() : iterator.next()\n        if (done) {\n          readable.push(null)\n        } else {\n          const res = value && typeof value.then === 'function' ? await value : value\n          if (res === null) {\n            reading = false\n            throw new ERR_STREAM_NULL_VALUES()\n          } else if (readable.push(res)) {\n            continue\n          } else {\n            reading = false\n          }\n        }\n      } catch (err) {\n        readable.destroy(err)\n      }\n      break\n    }\n  }\n  return readable\n}\nmodule.exports = from\n","// Copyright Joyent, Inc. and other Node contributors.\n//\n// Permission is hereby granted, free of charge, to any person obtaining a\n// copy of this software and associated documentation files (the\n// \"Software\"), to deal in the Software without restriction, including\n// without limitation the rights to use, copy, modify, merge, publish,\n// distribute, sublicense, and/or sell copies of the Software, and to permit\n// persons to whom the Software is furnished to do so, subject to the\n// following conditions:\n//\n// The above copyright notice and this permission notice shall be included\n// in all copies or substantial portions of the Software.\n//\n// THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS\n// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF\n// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN\n// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,\n// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR\n// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE\n// USE OR OTHER DEALINGS IN THE SOFTWARE.\n\n// a transform stream is a readable/writable stream where you do\n// something with the data.  Sometimes it's called a \"filter\",\n// but that's not a great name for it, since that implies a thing where\n// some bits pass through, and others are simply ignored.  (That would\n// be a valid example of a transform, of course.)\n//\n// While the output is causally related to the input, it's not a\n// necessarily symmetric or synchronous transformation.  For example,\n// a zlib stream might take multiple plain-text writes(), and then\n// emit a single compressed chunk some time in the future.\n//\n// Here's how this works:\n//\n// The Transform stream has all the aspects of the readable and writable\n// stream classes.  When you write(chunk), that calls _write(chunk,cb)\n// internally, and returns false if there's a lot of pending writes\n// buffered up.  When you call read(), that calls _read(n) until\n// there's enough pending readable data buffered up.\n//\n// In a transform stream, the written data is placed in a buffer.  When\n// _read(n) is called, it transforms the queued up data, calling the\n// buffered _write cb's as it consumes chunks.  If consuming a single\n// written chunk would result in multiple output chunks, then the first\n// outputted bit calls the readcb, and subsequent chunks just go into\n// the read buffer, and will cause it to emit 'readable' if necessary.\n//\n// This way, back-pressure is actually determined by the reading side,\n// since _read has to be called to start processing a new chunk.  However,\n// a pathological inflate type of transform can cause excessive buffering\n// here.  For example, imagine a stream where every byte of input is\n// interpreted as an integer from 0-255, and then results in that many\n// bytes of output.  Writing the 4 bytes {ff,ff,ff,ff} would result in\n// 1kb of data being output.  In this case, you could write a very small\n// amount of input, and end up with a very large amount of output.  In\n// such a pathological inflating mechanism, there'd be no way to tell\n// the system to stop doing the transform.  A single 4MB write could\n// cause the system to run out of memory.\n//\n// However, even in such a pathological case, only a single written chunk\n// would be consumed, and then the rest would wait (un-transformed) until\n// the results of the previous transformed chunk were consumed.\n\n'use strict'\n\nconst { ObjectSetPrototypeOf, Symbol } = require('../../ours/primordials')\nmodule.exports = Transform\nconst { ERR_METHOD_NOT_IMPLEMENTED } = require('../../ours/errors').codes\nconst Duplex = require('./duplex')\nconst { getHighWaterMark } = require('./state')\nObjectSetPrototypeOf(Transform.prototype, Duplex.prototype)\nObjectSetPrototypeOf(Transform, Duplex)\nconst kCallback = Symbol('kCallback')\nfunction Transform(options) {\n  if (!(this instanceof Transform)) return new Transform(options)\n\n  // TODO (ronag): This should preferably always be\n  // applied but would be semver-major. Or even better;\n  // make Transform a Readable with the Writable interface.\n  const readableHighWaterMark = options ? getHighWaterMark(this, options, 'readableHighWaterMark', true) : null\n  if (readableHighWaterMark === 0) {\n    // A Duplex will buffer both on the writable and readable side while\n    // a Transform just wants to buffer hwm number of elements. To avoid\n    // buffering twice we disable buffering on the writable side.\n    options = {\n      ...options,\n      highWaterMark: null,\n      readableHighWaterMark,\n      // TODO (ronag): 0 is not optimal since we have\n      // a \"bug\" where we check needDrain before calling _write and not after.\n      // Refs: https://github.com/nodejs/node/pull/32887\n      // Refs: https://github.com/nodejs/node/pull/35941\n      writableHighWaterMark: options.writableHighWaterMark || 0\n    }\n  }\n  Duplex.call(this, options)\n\n  // We have implemented the _read method, and done the other things\n  // that Readable wants before the first _read call, so unset the\n  // sync guard flag.\n  this._readableState.sync = false\n  this[kCallback] = null\n  if (options) {\n    if (typeof options.transform === 'function') this._transform = options.transform\n    if (typeof options.flush === 'function') this._flush = options.flush\n  }\n\n  // When the writable side finishes, then flush out anything remaining.\n  // Backwards compat. Some Transform streams incorrectly implement _final\n  // instead of or in addition to _flush. By using 'prefinish' instead of\n  // implementing _final we continue supporting this unfortunate use case.\n  this.on('prefinish', prefinish)\n}\nfunction final(cb) {\n  if (typeof this._flush === 'function' && !this.destroyed) {\n    this._flush((er, data) => {\n      if (er) {\n        if (cb) {\n          cb(er)\n        } else {\n          this.destroy(er)\n        }\n        return\n      }\n      if (data != null) {\n        this.push(data)\n      }\n      this.push(null)\n      if (cb) {\n        cb()\n      }\n    })\n  } else {\n    this.push(null)\n    if (cb) {\n      cb()\n    }\n  }\n}\nfunction prefinish() {\n  if (this._final !== final) {\n    final.call(this)\n  }\n}\nTransform.prototype._final = final\nTransform.prototype._transform = function (chunk, encoding, callback) {\n  throw new ERR_METHOD_NOT_IMPLEMENTED('_transform()')\n}\nTransform.prototype._write = function (chunk, encoding, callback) {\n  const rState = this._readableState\n  const wState = this._writableState\n  const length = rState.length\n  this._transform(chunk, encoding, (err, val) => {\n    if (err) {\n      callback(err)\n      return\n    }\n    if (val != null) {\n      this.push(val)\n    }\n    if (\n      wState.ended ||\n      // Backwards compat.\n      length === rState.length ||\n      // Backwards compat.\n      rState.length < rState.highWaterMark\n    ) {\n      callback()\n    } else {\n      this[kCallback] = callback\n    }\n  })\n}\nTransform.prototype._read = function () {\n  if (this[kCallback]) {\n    const callback = this[kCallback]\n    this[kCallback] = null\n    callback()\n  }\n}\n","'use strict'\n\nconst { format, inspect, AggregateError: CustomAggregateError } = require('./util')\n\n/*\n  This file is a reduced and adapted version of the main lib/internal/errors.js file defined at\n\n  https://github.com/nodejs/node/blob/master/lib/internal/errors.js\n\n  Don't try to replace with the original file and keep it up to date (starting from E(...) definitions)\n  with the upstream file.\n*/\n\nconst AggregateError = globalThis.AggregateError || CustomAggregateError\nconst kIsNodeError = Symbol('kIsNodeError')\nconst kTypes = [\n  'string',\n  'function',\n  'number',\n  'object',\n  // Accept 'Function' and 'Object' as alternative to the lower cased version.\n  'Function',\n  'Object',\n  'boolean',\n  'bigint',\n  'symbol'\n]\nconst classRegExp = /^([A-Z][a-z0-9]*)+$/\nconst nodeInternalPrefix = '__node_internal_'\nconst codes = {}\nfunction assert(value, message) {\n  if (!value) {\n    throw new codes.ERR_INTERNAL_ASSERTION(message)\n  }\n}\n\n// Only use this for integers! Decimal numbers do not work with this function.\nfunction addNumericalSeparator(val) {\n  let res = ''\n  let i = val.length\n  const start = val[0] === '-' ? 1 : 0\n  for (; i >= start + 4; i -= 3) {\n    res = `_${val.slice(i - 3, i)}${res}`\n  }\n  return `${val.slice(0, i)}${res}`\n}\nfunction getMessage(key, msg, args) {\n  if (typeof msg === 'function') {\n    assert(\n      msg.length <= args.length,\n      // Default options do not count.\n      `Code: ${key}; The provided arguments length (${args.length}) does not match the required ones (${msg.length}).`\n    )\n    return msg(...args)\n  }\n  const expectedLength = (msg.match(/%[dfijoOs]/g) || []).length\n  assert(\n    expectedLength === args.length,\n    `Code: ${key}; The provided arguments length (${args.length}) does not match the required ones (${expectedLength}).`\n  )\n  if (args.length === 0) {\n    return msg\n  }\n  return format(msg, ...args)\n}\nfunction E(code, message, Base) {\n  if (!Base) {\n    Base = Error\n  }\n  class NodeError extends Base {\n    constructor(...args) {\n      super(getMessage(code, message, args))\n    }\n    toString() {\n      return `${this.name} [${code}]: ${this.message}`\n    }\n  }\n  Object.defineProperties(NodeError.prototype, {\n    name: {\n      value: Base.name,\n      writable: true,\n      enumerable: false,\n      configurable: true\n    },\n    toString: {\n      value() {\n        return `${this.name} [${code}]: ${this.message}`\n      },\n      writable: true,\n      enumerable: false,\n      configurable: true\n    }\n  })\n  NodeError.prototype.code = code\n  NodeError.prototype[kIsNodeError] = true\n  codes[code] = NodeError\n}\nfunction hideStackFrames(fn) {\n  // We rename the functions that will be hidden to cut off the stacktrace\n  // at the outermost one\n  const hidden = nodeInternalPrefix + fn.name\n  Object.defineProperty(fn, 'name', {\n    value: hidden\n  })\n  return fn\n}\nfunction aggregateTwoErrors(innerError, outerError) {\n  if (innerError && outerError && innerError !== outerError) {\n    if (Array.isArray(outerError.errors)) {\n      // If `outerError` is already an `AggregateError`.\n      outerError.errors.push(innerError)\n      return outerError\n    }\n    const err = new AggregateError([outerError, innerError], outerError.message)\n    err.code = outerError.code\n    return err\n  }\n  return innerError || outerError\n}\nclass AbortError extends Error {\n  constructor(message = 'The operation was aborted', options = undefined) {\n    if (options !== undefined && typeof options !== 'object') {\n      throw new codes.ERR_INVALID_ARG_TYPE('options', 'Object', options)\n    }\n    super(message, options)\n    this.code = 'ABORT_ERR'\n    this.name = 'AbortError'\n  }\n}\nE('ERR_ASSERTION', '%s', Error)\nE(\n  'ERR_INVALID_ARG_TYPE',\n  (name, expected, actual) => {\n    assert(typeof name === 'string', \"'name' must be a string\")\n    if (!Array.isArray(expected)) {\n      expected = [expected]\n    }\n    let msg = 'The '\n    if (name.endsWith(' argument')) {\n      // For cases like 'first argument'\n      msg += `${name} `\n    } else {\n      msg += `\"${name}\" ${name.includes('.') ? 'property' : 'argument'} `\n    }\n    msg += 'must be '\n    const types = []\n    const instances = []\n    const other = []\n    for (const value of expected) {\n      assert(typeof value === 'string', 'All expected entries have to be of type string')\n      if (kTypes.includes(value)) {\n        types.push(value.toLowerCase())\n      } else if (classRegExp.test(value)) {\n        instances.push(value)\n      } else {\n        assert(value !== 'object', 'The value \"object\" should be written as \"Object\"')\n        other.push(value)\n      }\n    }\n\n    // Special handle `object` in case other instances are allowed to outline\n    // the differences between each other.\n    if (instances.length > 0) {\n      const pos = types.indexOf('object')\n      if (pos !== -1) {\n        types.splice(types, pos, 1)\n        instances.push('Object')\n      }\n    }\n    if (types.length > 0) {\n      switch (types.length) {\n        case 1:\n          msg += `of type ${types[0]}`\n          break\n        case 2:\n          msg += `one of type ${types[0]} or ${types[1]}`\n          break\n        default: {\n          const last = types.pop()\n          msg += `one of type ${types.join(', ')}, or ${last}`\n        }\n      }\n      if (instances.length > 0 || other.length > 0) {\n        msg += ' or '\n      }\n    }\n    if (instances.length > 0) {\n      switch (instances.length) {\n        case 1:\n          msg += `an instance of ${instances[0]}`\n          break\n        case 2:\n          msg += `an instance of ${instances[0]} or ${instances[1]}`\n          break\n        default: {\n          const last = instances.pop()\n          msg += `an instance of ${instances.join(', ')}, or ${last}`\n        }\n      }\n      if (other.length > 0) {\n        msg += ' or '\n      }\n    }\n    switch (other.length) {\n      case 0:\n        break\n      case 1:\n        if (other[0].toLowerCase() !== other[0]) {\n          msg += 'an '\n        }\n        msg += `${other[0]}`\n        break\n      case 2:\n        msg += `one of ${other[0]} or ${other[1]}`\n        break\n      default: {\n        const last = other.pop()\n        msg += `one of ${other.join(', ')}, or ${last}`\n      }\n    }\n    if (actual == null) {\n      msg += `. Received ${actual}`\n    } else if (typeof actual === 'function' && actual.name) {\n      msg += `. Received function ${actual.name}`\n    } else if (typeof actual === 'object') {\n      var _actual$constructor\n      if (\n        (_actual$constructor = actual.constructor) !== null &&\n        _actual$constructor !== undefined &&\n        _actual$constructor.name\n      ) {\n        msg += `. Received an instance of ${actual.constructor.name}`\n      } else {\n        const inspected = inspect(actual, {\n          depth: -1\n        })\n        msg += `. Received ${inspected}`\n      }\n    } else {\n      let inspected = inspect(actual, {\n        colors: false\n      })\n      if (inspected.length > 25) {\n        inspected = `${inspected.slice(0, 25)}...`\n      }\n      msg += `. Received type ${typeof actual} (${inspected})`\n    }\n    return msg\n  },\n  TypeError\n)\nE(\n  'ERR_INVALID_ARG_VALUE',\n  (name, value, reason = 'is invalid') => {\n    let inspected = inspect(value)\n    if (inspected.length > 128) {\n      inspected = inspected.slice(0, 128) + '...'\n    }\n    const type = name.includes('.') ? 'property' : 'argument'\n    return `The ${type} '${name}' ${reason}. Received ${inspected}`\n  },\n  TypeError\n)\nE(\n  'ERR_INVALID_RETURN_VALUE',\n  (input, name, value) => {\n    var _value$constructor\n    const type =\n      value !== null &&\n      value !== undefined &&\n      (_value$constructor = value.constructor) !== null &&\n      _value$constructor !== undefined &&\n      _value$constructor.name\n        ? `instance of ${value.constructor.name}`\n        : `type ${typeof value}`\n    return `Expected ${input} to be returned from the \"${name}\"` + ` function but got ${type}.`\n  },\n  TypeError\n)\nE(\n  'ERR_MISSING_ARGS',\n  (...args) => {\n    assert(args.length > 0, 'At least one arg needs to be specified')\n    let msg\n    const len = args.length\n    args = (Array.isArray(args) ? args : [args]).map((a) => `\"${a}\"`).join(' or ')\n    switch (len) {\n      case 1:\n        msg += `The ${args[0]} argument`\n        break\n      case 2:\n        msg += `The ${args[0]} and ${args[1]} arguments`\n        break\n      default:\n        {\n          const last = args.pop()\n          msg += `The ${args.join(', ')}, and ${last} arguments`\n        }\n        break\n    }\n    return `${msg} must be specified`\n  },\n  TypeError\n)\nE(\n  'ERR_OUT_OF_RANGE',\n  (str, range, input) => {\n    assert(range, 'Missing \"range\" argument')\n    let received\n    if (Number.isInteger(input) && Math.abs(input) > 2 ** 32) {\n      received = addNumericalSeparator(String(input))\n    } else if (typeof input === 'bigint') {\n      received = String(input)\n      if (input > 2n ** 32n || input < -(2n ** 32n)) {\n        received = addNumericalSeparator(received)\n      }\n      received += 'n'\n    } else {\n      received = inspect(input)\n    }\n    return `The value of \"${str}\" is out of range. It must be ${range}. Received ${received}`\n  },\n  RangeError\n)\nE('ERR_MULTIPLE_CALLBACK', 'Callback called multiple times', Error)\nE('ERR_METHOD_NOT_IMPLEMENTED', 'The %s method is not implemented', Error)\nE('ERR_STREAM_ALREADY_FINISHED', 'Cannot call %s after a stream was finished', Error)\nE('ERR_STREAM_CANNOT_PIPE', 'Cannot pipe, not readable', Error)\nE('ERR_STREAM_DESTROYED', 'Cannot call %s after a stream was destroyed', Error)\nE('ERR_STREAM_NULL_VALUES', 'May not write null values to stream', TypeError)\nE('ERR_STREAM_PREMATURE_CLOSE', 'Premature close', Error)\nE('ERR_STREAM_PUSH_AFTER_EOF', 'stream.push() after EOF', Error)\nE('ERR_STREAM_UNSHIFT_AFTER_END_EVENT', 'stream.unshift() after end event', Error)\nE('ERR_STREAM_WRITE_AFTER_END', 'write after end', Error)\nE('ERR_UNKNOWN_ENCODING', 'Unknown encoding: %s', TypeError)\nmodule.exports = {\n  AbortError,\n  aggregateTwoErrors: hideStackFrames(aggregateTwoErrors),\n  hideStackFrames,\n  codes\n}\n","/* replacement start */\n\nconst process = require('process/')\n\n/* replacement end */\n// Copyright Joyent, Inc. and other Node contributors.\n//\n// Permission is hereby granted, free of charge, to any person obtaining a\n// copy of this software and associated documentation files (the\n// \"Software\"), to deal in the Software without restriction, including\n// without limitation the rights to use, copy, modify, merge, publish,\n// distribute, sublicense, and/or sell copies of the Software, and to permit\n// persons to whom the Software is furnished to do so, subject to the\n// following conditions:\n//\n// The above copyright notice and this permission notice shall be included\n// in all copies or substantial portions of the Software.\n//\n// THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS\n// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF\n// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN\n// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,\n// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR\n// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE\n// USE OR OTHER DEALINGS IN THE SOFTWARE.\n\n// A bit simpler than readable streams.\n// Implement an async ._write(chunk, encoding, cb), and it'll handle all\n// the drain event emission and buffering.\n\n;('use strict')\nconst {\n  ArrayPrototypeSlice,\n  Error,\n  FunctionPrototypeSymbolHasInstance,\n  ObjectDefineProperty,\n  ObjectDefineProperties,\n  ObjectSetPrototypeOf,\n  StringPrototypeToLowerCase,\n  Symbol,\n  SymbolHasInstance\n} = require('../../ours/primordials')\nmodule.exports = Writable\nWritable.WritableState = WritableState\nconst { EventEmitter: EE } = require('events')\nconst Stream = require('./legacy').Stream\nconst { Buffer } = require('buffer')\nconst destroyImpl = require('./destroy')\nconst { addAbortSignal } = require('./add-abort-signal')\nconst { getHighWaterMark, getDefaultHighWaterMark } = require('./state')\nconst {\n  ERR_INVALID_ARG_TYPE,\n  ERR_METHOD_NOT_IMPLEMENTED,\n  ERR_MULTIPLE_CALLBACK,\n  ERR_STREAM_CANNOT_PIPE,\n  ERR_STREAM_DESTROYED,\n  ERR_STREAM_ALREADY_FINISHED,\n  ERR_STREAM_NULL_VALUES,\n  ERR_STREAM_WRITE_AFTER_END,\n  ERR_UNKNOWN_ENCODING\n} = require('../../ours/errors').codes\nconst { errorOrDestroy } = destroyImpl\nObjectSetPrototypeOf(Writable.prototype, Stream.prototype)\nObjectSetPrototypeOf(Writable, Stream)\nfunction nop() {}\nconst kOnFinished = Symbol('kOnFinished')\nfunction WritableState(options, stream, isDuplex) {\n  // Duplex streams are both readable and writable, but share\n  // the same options object.\n  // However, some cases require setting options to different\n  // values for the readable and the writable sides of the duplex stream,\n  // e.g. options.readableObjectMode vs. options.writableObjectMode, etc.\n  if (typeof isDuplex !== 'boolean') isDuplex = stream instanceof require('./duplex')\n\n  // Object stream flag to indicate whether or not this stream\n  // contains buffers or objects.\n  this.objectMode = !!(options && options.objectMode)\n  if (isDuplex) this.objectMode = this.objectMode || !!(options && options.writableObjectMode)\n\n  // The point at which write() starts returning false\n  // Note: 0 is a valid value, means that we always return false if\n  // the entire buffer is not flushed immediately on write().\n  this.highWaterMark = options\n    ? getHighWaterMark(this, options, 'writableHighWaterMark', isDuplex)\n    : getDefaultHighWaterMark(false)\n\n  // if _final has been called.\n  this.finalCalled = false\n\n  // drain event flag.\n  this.needDrain = false\n  // At the start of calling end()\n  this.ending = false\n  // When end() has been called, and returned.\n  this.ended = false\n  // When 'finish' is emitted.\n  this.finished = false\n\n  // Has it been destroyed\n  this.destroyed = false\n\n  // Should we decode strings into buffers before passing to _write?\n  // this is here so that some node-core streams can optimize string\n  // handling at a lower level.\n  const noDecode = !!(options && options.decodeStrings === false)\n  this.decodeStrings = !noDecode\n\n  // Crypto is kind of old and crusty.  Historically, its default string\n  // encoding is 'binary' so we have to make this configurable.\n  // Everything else in the universe uses 'utf8', though.\n  this.defaultEncoding = (options && options.defaultEncoding) || 'utf8'\n\n  // Not an actual buffer we keep track of, but a measurement\n  // of how much we're waiting to get pushed to some underlying\n  // socket or file.\n  this.length = 0\n\n  // A flag to see when we're in the middle of a write.\n  this.writing = false\n\n  // When true all writes will be buffered until .uncork() call.\n  this.corked = 0\n\n  // A flag to be able to tell if the onwrite cb is called immediately,\n  // or on a later tick.  We set this to true at first, because any\n  // actions that shouldn't happen until \"later\" should generally also\n  // not happen before the first write call.\n  this.sync = true\n\n  // A flag to know if we're processing previously buffered items, which\n  // may call the _write() callback in the same tick, so that we don't\n  // end up in an overlapped onwrite situation.\n  this.bufferProcessing = false\n\n  // The callback that's passed to _write(chunk, cb).\n  this.onwrite = onwrite.bind(undefined, stream)\n\n  // The callback that the user supplies to write(chunk, encoding, cb).\n  this.writecb = null\n\n  // The amount that is being written when _write is called.\n  this.writelen = 0\n\n  // Storage for data passed to the afterWrite() callback in case of\n  // synchronous _write() completion.\n  this.afterWriteTickInfo = null\n  resetBuffer(this)\n\n  // Number of pending user-supplied write callbacks\n  // this must be 0 before 'finish' can be emitted.\n  this.pendingcb = 0\n\n  // Stream is still being constructed and cannot be\n  // destroyed until construction finished or failed.\n  // Async construction is opt in, therefore we start as\n  // constructed.\n  this.constructed = true\n\n  // Emit prefinish if the only thing we're waiting for is _write cbs\n  // This is relevant for synchronous Transform streams.\n  this.prefinished = false\n\n  // True if the error was already emitted and should not be thrown again.\n  this.errorEmitted = false\n\n  // Should close be emitted on destroy. Defaults to true.\n  this.emitClose = !options || options.emitClose !== false\n\n  // Should .destroy() be called after 'finish' (and potentially 'end').\n  this.autoDestroy = !options || options.autoDestroy !== false\n\n  // Indicates whether the stream has errored. When true all write() calls\n  // should return false. This is needed since when autoDestroy\n  // is disabled we need a way to tell whether the stream has failed.\n  this.errored = null\n\n  // Indicates whether the stream has finished destroying.\n  this.closed = false\n\n  // True if close has been emitted or would have been emitted\n  // depending on emitClose.\n  this.closeEmitted = false\n  this[kOnFinished] = []\n}\nfunction resetBuffer(state) {\n  state.buffered = []\n  state.bufferedIndex = 0\n  state.allBuffers = true\n  state.allNoop = true\n}\nWritableState.prototype.getBuffer = function getBuffer() {\n  return ArrayPrototypeSlice(this.buffered, this.bufferedIndex)\n}\nObjectDefineProperty(WritableState.prototype, 'bufferedRequestCount', {\n  __proto__: null,\n  get() {\n    return this.buffered.length - this.bufferedIndex\n  }\n})\nfunction Writable(options) {\n  // Writable ctor is applied to Duplexes, too.\n  // `realHasInstance` is necessary because using plain `instanceof`\n  // would return false, as no `_writableState` property is attached.\n\n  // Trying to use the custom `instanceof` for Writable here will also break the\n  // Node.js LazyTransform implementation, which has a non-trivial getter for\n  // `_writableState` that would lead to infinite recursion.\n\n  // Checking for a Stream.Duplex instance is faster here instead of inside\n  // the WritableState constructor, at least with V8 6.5.\n  const isDuplex = this instanceof require('./duplex')\n  if (!isDuplex && !FunctionPrototypeSymbolHasInstance(Writable, this)) return new Writable(options)\n  this._writableState = new WritableState(options, this, isDuplex)\n  if (options) {\n    if (typeof options.write === 'function') this._write = options.write\n    if (typeof options.writev === 'function') this._writev = options.writev\n    if (typeof options.destroy === 'function') this._destroy = options.destroy\n    if (typeof options.final === 'function') this._final = options.final\n    if (typeof options.construct === 'function') this._construct = options.construct\n    if (options.signal) addAbortSignal(options.signal, this)\n  }\n  Stream.call(this, options)\n  destroyImpl.construct(this, () => {\n    const state = this._writableState\n    if (!state.writing) {\n      clearBuffer(this, state)\n    }\n    finishMaybe(this, state)\n  })\n}\nObjectDefineProperty(Writable, SymbolHasInstance, {\n  __proto__: null,\n  value: function (object) {\n    if (FunctionPrototypeSymbolHasInstance(this, object)) return true\n    if (this !== Writable) return false\n    return object && object._writableState instanceof WritableState\n  }\n})\n\n// Otherwise people can pipe Writable streams, which is just wrong.\nWritable.prototype.pipe = function () {\n  errorOrDestroy(this, new ERR_STREAM_CANNOT_PIPE())\n}\nfunction _write(stream, chunk, encoding, cb) {\n  const state = stream._writableState\n  if (typeof encoding === 'function') {\n    cb = encoding\n    encoding = state.defaultEncoding\n  } else {\n    if (!encoding) encoding = state.defaultEncoding\n    else if (encoding !== 'buffer' && !Buffer.isEncoding(encoding)) throw new ERR_UNKNOWN_ENCODING(encoding)\n    if (typeof cb !== 'function') cb = nop\n  }\n  if (chunk === null) {\n    throw new ERR_STREAM_NULL_VALUES()\n  } else if (!state.objectMode) {\n    if (typeof chunk === 'string') {\n      if (state.decodeStrings !== false) {\n        chunk = Buffer.from(chunk, encoding)\n        encoding = 'buffer'\n      }\n    } else if (chunk instanceof Buffer) {\n      encoding = 'buffer'\n    } else if (Stream._isUint8Array(chunk)) {\n      chunk = Stream._uint8ArrayToBuffer(chunk)\n      encoding = 'buffer'\n    } else {\n      throw new ERR_INVALID_ARG_TYPE('chunk', ['string', 'Buffer', 'Uint8Array'], chunk)\n    }\n  }\n  let err\n  if (state.ending) {\n    err = new ERR_STREAM_WRITE_AFTER_END()\n  } else if (state.destroyed) {\n    err = new ERR_STREAM_DESTROYED('write')\n  }\n  if (err) {\n    process.nextTick(cb, err)\n    errorOrDestroy(stream, err, true)\n    return err\n  }\n  state.pendingcb++\n  return writeOrBuffer(stream, state, chunk, encoding, cb)\n}\nWritable.prototype.write = function (chunk, encoding, cb) {\n  return _write(this, chunk, encoding, cb) === true\n}\nWritable.prototype.cork = function () {\n  this._writableState.corked++\n}\nWritable.prototype.uncork = function () {\n  const state = this._writableState\n  if (state.corked) {\n    state.corked--\n    if (!state.writing) clearBuffer(this, state)\n  }\n}\nWritable.prototype.setDefaultEncoding = function setDefaultEncoding(encoding) {\n  // node::ParseEncoding() requires lower case.\n  if (typeof encoding === 'string') encoding = StringPrototypeToLowerCase(encoding)\n  if (!Buffer.isEncoding(encoding)) throw new ERR_UNKNOWN_ENCODING(encoding)\n  this._writableState.defaultEncoding = encoding\n  return this\n}\n\n// If we're already writing something, then just put this\n// in the queue, and wait our turn.  Otherwise, call _write\n// If we return false, then we need a drain event, so set that flag.\nfunction writeOrBuffer(stream, state, chunk, encoding, callback) {\n  const len = state.objectMode ? 1 : chunk.length\n  state.length += len\n\n  // stream._write resets state.length\n  const ret = state.length < state.highWaterMark\n  // We must ensure that previous needDrain will not be reset to false.\n  if (!ret) state.needDrain = true\n  if (state.writing || state.corked || state.errored || !state.constructed) {\n    state.buffered.push({\n      chunk,\n      encoding,\n      callback\n    })\n    if (state.allBuffers && encoding !== 'buffer') {\n      state.allBuffers = false\n    }\n    if (state.allNoop && callback !== nop) {\n      state.allNoop = false\n    }\n  } else {\n    state.writelen = len\n    state.writecb = callback\n    state.writing = true\n    state.sync = true\n    stream._write(chunk, encoding, state.onwrite)\n    state.sync = false\n  }\n\n  // Return false if errored or destroyed in order to break\n  // any synchronous while(stream.write(data)) loops.\n  return ret && !state.errored && !state.destroyed\n}\nfunction doWrite(stream, state, writev, len, chunk, encoding, cb) {\n  state.writelen = len\n  state.writecb = cb\n  state.writing = true\n  state.sync = true\n  if (state.destroyed) state.onwrite(new ERR_STREAM_DESTROYED('write'))\n  else if (writev) stream._writev(chunk, state.onwrite)\n  else stream._write(chunk, encoding, state.onwrite)\n  state.sync = false\n}\nfunction onwriteError(stream, state, er, cb) {\n  --state.pendingcb\n  cb(er)\n  // Ensure callbacks are invoked even when autoDestroy is\n  // not enabled. Passing `er` here doesn't make sense since\n  // it's related to one specific write, not to the buffered\n  // writes.\n  errorBuffer(state)\n  // This can emit error, but error must always follow cb.\n  errorOrDestroy(stream, er)\n}\nfunction onwrite(stream, er) {\n  const state = stream._writableState\n  const sync = state.sync\n  const cb = state.writecb\n  if (typeof cb !== 'function') {\n    errorOrDestroy(stream, new ERR_MULTIPLE_CALLBACK())\n    return\n  }\n  state.writing = false\n  state.writecb = null\n  state.length -= state.writelen\n  state.writelen = 0\n  if (er) {\n    // Avoid V8 leak, https://github.com/nodejs/node/pull/34103#issuecomment-652002364\n    er.stack // eslint-disable-line no-unused-expressions\n\n    if (!state.errored) {\n      state.errored = er\n    }\n\n    // In case of duplex streams we need to notify the readable side of the\n    // error.\n    if (stream._readableState && !stream._readableState.errored) {\n      stream._readableState.errored = er\n    }\n    if (sync) {\n      process.nextTick(onwriteError, stream, state, er, cb)\n    } else {\n      onwriteError(stream, state, er, cb)\n    }\n  } else {\n    if (state.buffered.length > state.bufferedIndex) {\n      clearBuffer(stream, state)\n    }\n    if (sync) {\n      // It is a common case that the callback passed to .write() is always\n      // the same. In that case, we do not schedule a new nextTick(), but\n      // rather just increase a counter, to improve performance and avoid\n      // memory allocations.\n      if (state.afterWriteTickInfo !== null && state.afterWriteTickInfo.cb === cb) {\n        state.afterWriteTickInfo.count++\n      } else {\n        state.afterWriteTickInfo = {\n          count: 1,\n          cb,\n          stream,\n          state\n        }\n        process.nextTick(afterWriteTick, state.afterWriteTickInfo)\n      }\n    } else {\n      afterWrite(stream, state, 1, cb)\n    }\n  }\n}\nfunction afterWriteTick({ stream, state, count, cb }) {\n  state.afterWriteTickInfo = null\n  return afterWrite(stream, state, count, cb)\n}\nfunction afterWrite(stream, state, count, cb) {\n  const needDrain = !state.ending && !stream.destroyed && state.length === 0 && state.needDrain\n  if (needDrain) {\n    state.needDrain = false\n    stream.emit('drain')\n  }\n  while (count-- > 0) {\n    state.pendingcb--\n    cb()\n  }\n  if (state.destroyed) {\n    errorBuffer(state)\n  }\n  finishMaybe(stream, state)\n}\n\n// If there's something in the buffer waiting, then invoke callbacks.\nfunction errorBuffer(state) {\n  if (state.writing) {\n    return\n  }\n  for (let n = state.bufferedIndex; n < state.buffered.length; ++n) {\n    var _state$errored\n    const { chunk, callback } = state.buffered[n]\n    const len = state.objectMode ? 1 : chunk.length\n    state.length -= len\n    callback(\n      (_state$errored = state.errored) !== null && _state$errored !== undefined\n        ? _state$errored\n        : new ERR_STREAM_DESTROYED('write')\n    )\n  }\n  const onfinishCallbacks = state[kOnFinished].splice(0)\n  for (let i = 0; i < onfinishCallbacks.length; i++) {\n    var _state$errored2\n    onfinishCallbacks[i](\n      (_state$errored2 = state.errored) !== null && _state$errored2 !== undefined\n        ? _state$errored2\n        : new ERR_STREAM_DESTROYED('end')\n    )\n  }\n  resetBuffer(state)\n}\n\n// If there's something in the buffer waiting, then process it.\nfunction clearBuffer(stream, state) {\n  if (state.corked || state.bufferProcessing || state.destroyed || !state.constructed) {\n    return\n  }\n  const { buffered, bufferedIndex, objectMode } = state\n  const bufferedLength = buffered.length - bufferedIndex\n  if (!bufferedLength) {\n    return\n  }\n  let i = bufferedIndex\n  state.bufferProcessing = true\n  if (bufferedLength > 1 && stream._writev) {\n    state.pendingcb -= bufferedLength - 1\n    const callback = state.allNoop\n      ? nop\n      : (err) => {\n          for (let n = i; n < buffered.length; ++n) {\n            buffered[n].callback(err)\n          }\n        }\n    // Make a copy of `buffered` if it's going to be used by `callback` above,\n    // since `doWrite` will mutate the array.\n    const chunks = state.allNoop && i === 0 ? buffered : ArrayPrototypeSlice(buffered, i)\n    chunks.allBuffers = state.allBuffers\n    doWrite(stream, state, true, state.length, chunks, '', callback)\n    resetBuffer(state)\n  } else {\n    do {\n      const { chunk, encoding, callback } = buffered[i]\n      buffered[i++] = null\n      const len = objectMode ? 1 : chunk.length\n      doWrite(stream, state, false, len, chunk, encoding, callback)\n    } while (i < buffered.length && !state.writing)\n    if (i === buffered.length) {\n      resetBuffer(state)\n    } else if (i > 256) {\n      buffered.splice(0, i)\n      state.bufferedIndex = 0\n    } else {\n      state.bufferedIndex = i\n    }\n  }\n  state.bufferProcessing = false\n}\nWritable.prototype._write = function (chunk, encoding, cb) {\n  if (this._writev) {\n    this._writev(\n      [\n        {\n          chunk,\n          encoding\n        }\n      ],\n      cb\n    )\n  } else {\n    throw new ERR_METHOD_NOT_IMPLEMENTED('_write()')\n  }\n}\nWritable.prototype._writev = null\nWritable.prototype.end = function (chunk, encoding, cb) {\n  const state = this._writableState\n  if (typeof chunk === 'function') {\n    cb = chunk\n    chunk = null\n    encoding = null\n  } else if (typeof encoding === 'function') {\n    cb = encoding\n    encoding = null\n  }\n  let err\n  if (chunk !== null && chunk !== undefined) {\n    const ret = _write(this, chunk, encoding)\n    if (ret instanceof Error) {\n      err = ret\n    }\n  }\n\n  // .end() fully uncorks.\n  if (state.corked) {\n    state.corked = 1\n    this.uncork()\n  }\n  if (err) {\n    // Do nothing...\n  } else if (!state.errored && !state.ending) {\n    // This is forgiving in terms of unnecessary calls to end() and can hide\n    // logic errors. However, usually such errors are harmless and causing a\n    // hard error can be disproportionately destructive. It is not always\n    // trivial for the user to determine whether end() needs to be called\n    // or not.\n\n    state.ending = true\n    finishMaybe(this, state, true)\n    state.ended = true\n  } else if (state.finished) {\n    err = new ERR_STREAM_ALREADY_FINISHED('end')\n  } else if (state.destroyed) {\n    err = new ERR_STREAM_DESTROYED('end')\n  }\n  if (typeof cb === 'function') {\n    if (err || state.finished) {\n      process.nextTick(cb, err)\n    } else {\n      state[kOnFinished].push(cb)\n    }\n  }\n  return this\n}\nfunction needFinish(state) {\n  return (\n    state.ending &&\n    !state.destroyed &&\n    state.constructed &&\n    state.length === 0 &&\n    !state.errored &&\n    state.buffered.length === 0 &&\n    !state.finished &&\n    !state.writing &&\n    !state.errorEmitted &&\n    !state.closeEmitted\n  )\n}\nfunction callFinal(stream, state) {\n  let called = false\n  function onFinish(err) {\n    if (called) {\n      errorOrDestroy(stream, err !== null && err !== undefined ? err : ERR_MULTIPLE_CALLBACK())\n      return\n    }\n    called = true\n    state.pendingcb--\n    if (err) {\n      const onfinishCallbacks = state[kOnFinished].splice(0)\n      for (let i = 0; i < onfinishCallbacks.length; i++) {\n        onfinishCallbacks[i](err)\n      }\n      errorOrDestroy(stream, err, state.sync)\n    } else if (needFinish(state)) {\n      state.prefinished = true\n      stream.emit('prefinish')\n      // Backwards compat. Don't check state.sync here.\n      // Some streams assume 'finish' will be emitted\n      // asynchronously relative to _final callback.\n      state.pendingcb++\n      process.nextTick(finish, stream, state)\n    }\n  }\n  state.sync = true\n  state.pendingcb++\n  try {\n    stream._final(onFinish)\n  } catch (err) {\n    onFinish(err)\n  }\n  state.sync = false\n}\nfunction prefinish(stream, state) {\n  if (!state.prefinished && !state.finalCalled) {\n    if (typeof stream._final === 'function' && !state.destroyed) {\n      state.finalCalled = true\n      callFinal(stream, state)\n    } else {\n      state.prefinished = true\n      stream.emit('prefinish')\n    }\n  }\n}\nfunction finishMaybe(stream, state, sync) {\n  if (needFinish(state)) {\n    prefinish(stream, state)\n    if (state.pendingcb === 0) {\n      if (sync) {\n        state.pendingcb++\n        process.nextTick(\n          (stream, state) => {\n            if (needFinish(state)) {\n              finish(stream, state)\n            } else {\n              state.pendingcb--\n            }\n          },\n          stream,\n          state\n        )\n      } else if (needFinish(state)) {\n        state.pendingcb++\n        finish(stream, state)\n      }\n    }\n  }\n}\nfunction finish(stream, state) {\n  state.pendingcb--\n  state.finished = true\n  const onfinishCallbacks = state[kOnFinished].splice(0)\n  for (let i = 0; i < onfinishCallbacks.length; i++) {\n    onfinishCallbacks[i]()\n  }\n  stream.emit('finish')\n  if (state.autoDestroy) {\n    // In case of duplex streams we need a way to detect\n    // if the readable side is ready for autoDestroy as well.\n    const rState = stream._readableState\n    const autoDestroy =\n      !rState ||\n      (rState.autoDestroy &&\n        // We don't expect the readable to ever 'end'\n        // if readable is explicitly set to false.\n        (rState.endEmitted || rState.readable === false))\n    if (autoDestroy) {\n      stream.destroy()\n    }\n  }\n}\nObjectDefineProperties(Writable.prototype, {\n  closed: {\n    __proto__: null,\n    get() {\n      return this._writableState ? this._writableState.closed : false\n    }\n  },\n  destroyed: {\n    __proto__: null,\n    get() {\n      return this._writableState ? this._writableState.destroyed : false\n    },\n    set(value) {\n      // Backward compatibility, the user is explicitly managing destroyed.\n      if (this._writableState) {\n        this._writableState.destroyed = value\n      }\n    }\n  },\n  writable: {\n    __proto__: null,\n    get() {\n      const w = this._writableState\n      // w.writable === false means that this is part of a Duplex stream\n      // where the writable side was disabled upon construction.\n      // Compat. The user might manually disable writable side through\n      // deprecated setter.\n      return !!w && w.writable !== false && !w.destroyed && !w.errored && !w.ending && !w.ended\n    },\n    set(val) {\n      // Backwards compatible.\n      if (this._writableState) {\n        this._writableState.writable = !!val\n      }\n    }\n  },\n  writableFinished: {\n    __proto__: null,\n    get() {\n      return this._writableState ? this._writableState.finished : false\n    }\n  },\n  writableObjectMode: {\n    __proto__: null,\n    get() {\n      return this._writableState ? this._writableState.objectMode : false\n    }\n  },\n  writableBuffer: {\n    __proto__: null,\n    get() {\n      return this._writableState && this._writableState.getBuffer()\n    }\n  },\n  writableEnded: {\n    __proto__: null,\n    get() {\n      return this._writableState ? this._writableState.ending : false\n    }\n  },\n  writableNeedDrain: {\n    __proto__: null,\n    get() {\n      const wState = this._writableState\n      if (!wState) return false\n      return !wState.destroyed && !wState.ending && wState.needDrain\n    }\n  },\n  writableHighWaterMark: {\n    __proto__: null,\n    get() {\n      return this._writableState && this._writableState.highWaterMark\n    }\n  },\n  writableCorked: {\n    __proto__: null,\n    get() {\n      return this._writableState ? this._writableState.corked : 0\n    }\n  },\n  writableLength: {\n    __proto__: null,\n    get() {\n      return this._writableState && this._writableState.length\n    }\n  },\n  errored: {\n    __proto__: null,\n    enumerable: false,\n    get() {\n      return this._writableState ? this._writableState.errored : null\n    }\n  },\n  writableAborted: {\n    __proto__: null,\n    enumerable: false,\n    get: function () {\n      return !!(\n        this._writableState.writable !== false &&\n        (this._writableState.destroyed || this._writableState.errored) &&\n        !this._writableState.finished\n      )\n    }\n  }\n})\nconst destroy = destroyImpl.destroy\nWritable.prototype.destroy = function (err, cb) {\n  const state = this._writableState\n\n  // Invoke pending callbacks.\n  if (!state.destroyed && (state.bufferedIndex < state.buffered.length || state[kOnFinished].length)) {\n    process.nextTick(errorBuffer, state)\n  }\n  destroy.call(this, err, cb)\n  return this\n}\nWritable.prototype._undestroy = destroyImpl.undestroy\nWritable.prototype._destroy = function (err, cb) {\n  cb(err)\n}\nWritable.prototype[EE.captureRejectionSymbol] = function (err) {\n  this.destroy(err)\n}\nlet webStreamsAdapters\n\n// Lazy to avoid circular references\nfunction lazyWebStreams() {\n  if (webStreamsAdapters === undefined) webStreamsAdapters = {}\n  return webStreamsAdapters\n}\nWritable.fromWeb = function (writableStream, options) {\n  return lazyWebStreams().newStreamWritableFromWritableStream(writableStream, options)\n}\nWritable.toWeb = function (streamWritable) {\n  return lazyWebStreams().newWritableStreamFromStreamWritable(streamWritable)\n}\n","'use strict'\n\n/* replacement start */\n\nconst process = require('process/')\n\n/* replacement end */\n\nconst {\n  aggregateTwoErrors,\n  codes: { ERR_MULTIPLE_CALLBACK },\n  AbortError\n} = require('../../ours/errors')\nconst { Symbol } = require('../../ours/primordials')\nconst { kIsDestroyed, isDestroyed, isFinished, isServerRequest } = require('./utils')\nconst kDestroy = Symbol('kDestroy')\nconst kConstruct = Symbol('kConstruct')\nfunction checkError(err, w, r) {\n  if (err) {\n    // Avoid V8 leak, https://github.com/nodejs/node/pull/34103#issuecomment-652002364\n    err.stack // eslint-disable-line no-unused-expressions\n\n    if (w && !w.errored) {\n      w.errored = err\n    }\n    if (r && !r.errored) {\n      r.errored = err\n    }\n  }\n}\n\n// Backwards compat. cb() is undocumented and unused in core but\n// unfortunately might be used by modules.\nfunction destroy(err, cb) {\n  const r = this._readableState\n  const w = this._writableState\n  // With duplex streams we use the writable side for state.\n  const s = w || r\n  if ((w !== null && w !== undefined && w.destroyed) || (r !== null && r !== undefined && r.destroyed)) {\n    if (typeof cb === 'function') {\n      cb()\n    }\n    return this\n  }\n\n  // We set destroyed to true before firing error callbacks in order\n  // to make it re-entrance safe in case destroy() is called within callbacks\n  checkError(err, w, r)\n  if (w) {\n    w.destroyed = true\n  }\n  if (r) {\n    r.destroyed = true\n  }\n\n  // If still constructing then defer calling _destroy.\n  if (!s.constructed) {\n    this.once(kDestroy, function (er) {\n      _destroy(this, aggregateTwoErrors(er, err), cb)\n    })\n  } else {\n    _destroy(this, err, cb)\n  }\n  return this\n}\nfunction _destroy(self, err, cb) {\n  let called = false\n  function onDestroy(err) {\n    if (called) {\n      return\n    }\n    called = true\n    const r = self._readableState\n    const w = self._writableState\n    checkError(err, w, r)\n    if (w) {\n      w.closed = true\n    }\n    if (r) {\n      r.closed = true\n    }\n    if (typeof cb === 'function') {\n      cb(err)\n    }\n    if (err) {\n      process.nextTick(emitErrorCloseNT, self, err)\n    } else {\n      process.nextTick(emitCloseNT, self)\n    }\n  }\n  try {\n    self._destroy(err || null, onDestroy)\n  } catch (err) {\n    onDestroy(err)\n  }\n}\nfunction emitErrorCloseNT(self, err) {\n  emitErrorNT(self, err)\n  emitCloseNT(self)\n}\nfunction emitCloseNT(self) {\n  const r = self._readableState\n  const w = self._writableState\n  if (w) {\n    w.closeEmitted = true\n  }\n  if (r) {\n    r.closeEmitted = true\n  }\n  if ((w !== null && w !== undefined && w.emitClose) || (r !== null && r !== undefined && r.emitClose)) {\n    self.emit('close')\n  }\n}\nfunction emitErrorNT(self, err) {\n  const r = self._readableState\n  const w = self._writableState\n  if ((w !== null && w !== undefined && w.errorEmitted) || (r !== null && r !== undefined && r.errorEmitted)) {\n    return\n  }\n  if (w) {\n    w.errorEmitted = true\n  }\n  if (r) {\n    r.errorEmitted = true\n  }\n  self.emit('error', err)\n}\nfunction undestroy() {\n  const r = this._readableState\n  const w = this._writableState\n  if (r) {\n    r.constructed = true\n    r.closed = false\n    r.closeEmitted = false\n    r.destroyed = false\n    r.errored = null\n    r.errorEmitted = false\n    r.reading = false\n    r.ended = r.readable === false\n    r.endEmitted = r.readable === false\n  }\n  if (w) {\n    w.constructed = true\n    w.destroyed = false\n    w.closed = false\n    w.closeEmitted = false\n    w.errored = null\n    w.errorEmitted = false\n    w.finalCalled = false\n    w.prefinished = false\n    w.ended = w.writable === false\n    w.ending = w.writable === false\n    w.finished = w.writable === false\n  }\n}\nfunction errorOrDestroy(stream, err, sync) {\n  // We have tests that rely on errors being emitted\n  // in the same tick, so changing this is semver major.\n  // For now when you opt-in to autoDestroy we allow\n  // the error to be emitted nextTick. In a future\n  // semver major update we should change the default to this.\n\n  const r = stream._readableState\n  const w = stream._writableState\n  if ((w !== null && w !== undefined && w.destroyed) || (r !== null && r !== undefined && r.destroyed)) {\n    return this\n  }\n  if ((r !== null && r !== undefined && r.autoDestroy) || (w !== null && w !== undefined && w.autoDestroy))\n    stream.destroy(err)\n  else if (err) {\n    // Avoid V8 leak, https://github.com/nodejs/node/pull/34103#issuecomment-652002364\n    err.stack // eslint-disable-line no-unused-expressions\n\n    if (w && !w.errored) {\n      w.errored = err\n    }\n    if (r && !r.errored) {\n      r.errored = err\n    }\n    if (sync) {\n      process.nextTick(emitErrorNT, stream, err)\n    } else {\n      emitErrorNT(stream, err)\n    }\n  }\n}\nfunction construct(stream, cb) {\n  if (typeof stream._construct !== 'function') {\n    return\n  }\n  const r = stream._readableState\n  const w = stream._writableState\n  if (r) {\n    r.constructed = false\n  }\n  if (w) {\n    w.constructed = false\n  }\n  stream.once(kConstruct, cb)\n  if (stream.listenerCount(kConstruct) > 1) {\n    // Duplex\n    return\n  }\n  process.nextTick(constructNT, stream)\n}\nfunction constructNT(stream) {\n  let called = false\n  function onConstruct(err) {\n    if (called) {\n      errorOrDestroy(stream, err !== null && err !== undefined ? err : new ERR_MULTIPLE_CALLBACK())\n      return\n    }\n    called = true\n    const r = stream._readableState\n    const w = stream._writableState\n    const s = w || r\n    if (r) {\n      r.constructed = true\n    }\n    if (w) {\n      w.constructed = true\n    }\n    if (s.destroyed) {\n      stream.emit(kDestroy, err)\n    } else if (err) {\n      errorOrDestroy(stream, err, true)\n    } else {\n      process.nextTick(emitConstructNT, stream)\n    }\n  }\n  try {\n    stream._construct((err) => {\n      process.nextTick(onConstruct, err)\n    })\n  } catch (err) {\n    process.nextTick(onConstruct, err)\n  }\n}\nfunction emitConstructNT(stream) {\n  stream.emit(kConstruct)\n}\nfunction isRequest(stream) {\n  return (stream === null || stream === undefined ? undefined : stream.setHeader) && typeof stream.abort === 'function'\n}\nfunction emitCloseLegacy(stream) {\n  stream.emit('close')\n}\nfunction emitErrorCloseLegacy(stream, err) {\n  stream.emit('error', err)\n  process.nextTick(emitCloseLegacy, stream)\n}\n\n// Normalize destroy for legacy.\nfunction destroyer(stream, err) {\n  if (!stream || isDestroyed(stream)) {\n    return\n  }\n  if (!err && !isFinished(stream)) {\n    err = new AbortError()\n  }\n\n  // TODO: Remove isRequest branches.\n  if (isServerRequest(stream)) {\n    stream.socket = null\n    stream.destroy(err)\n  } else if (isRequest(stream)) {\n    stream.abort()\n  } else if (isRequest(stream.req)) {\n    stream.req.abort()\n  } else if (typeof stream.destroy === 'function') {\n    stream.destroy(err)\n  } else if (typeof stream.close === 'function') {\n    // TODO: Don't lose err?\n    stream.close()\n  } else if (err) {\n    process.nextTick(emitErrorCloseLegacy, stream, err)\n  } else {\n    process.nextTick(emitCloseLegacy, stream)\n  }\n  if (!stream.destroyed) {\n    stream[kIsDestroyed] = true\n  }\n}\nmodule.exports = {\n  construct,\n  destroyer,\n  destroy,\n  undestroy,\n  errorOrDestroy\n}\n","'use strict'\n\nconst bufferModule = require('buffer')\nconst { kResistStopPropagation, SymbolDispose } = require('./primordials')\nconst AbortSignal = globalThis.AbortSignal || require('abort-controller').AbortSignal\nconst AbortController = globalThis.AbortController || require('abort-controller').AbortController\nconst AsyncFunction = Object.getPrototypeOf(async function () {}).constructor\nconst Blob = globalThis.Blob || bufferModule.Blob\n/* eslint-disable indent */\nconst isBlob =\n  typeof Blob !== 'undefined'\n    ? function isBlob(b) {\n        // eslint-disable-next-line indent\n        return b instanceof Blob\n      }\n    : function isBlob(b) {\n        return false\n      }\n/* eslint-enable indent */\n\nconst validateAbortSignal = (signal, name) => {\n  if (signal !== undefined && (signal === null || typeof signal !== 'object' || !('aborted' in signal))) {\n    throw new ERR_INVALID_ARG_TYPE(name, 'AbortSignal', signal)\n  }\n}\nconst validateFunction = (value, name) => {\n  if (typeof value !== 'function') throw new ERR_INVALID_ARG_TYPE(name, 'Function', value)\n}\n\n// This is a simplified version of AggregateError\nclass AggregateError extends Error {\n  constructor(errors) {\n    if (!Array.isArray(errors)) {\n      throw new TypeError(`Expected input to be an Array, got ${typeof errors}`)\n    }\n    let message = ''\n    for (let i = 0; i < errors.length; i++) {\n      message += `    ${errors[i].stack}\\n`\n    }\n    super(message)\n    this.name = 'AggregateError'\n    this.errors = errors\n  }\n}\nmodule.exports = {\n  AggregateError,\n  kEmptyObject: Object.freeze({}),\n  once(callback) {\n    let called = false\n    return function (...args) {\n      if (called) {\n        return\n      }\n      called = true\n      callback.apply(this, args)\n    }\n  },\n  createDeferredPromise: function () {\n    let resolve\n    let reject\n\n    // eslint-disable-next-line promise/param-names\n    const promise = new Promise((res, rej) => {\n      resolve = res\n      reject = rej\n    })\n    return {\n      promise,\n      resolve,\n      reject\n    }\n  },\n  promisify(fn) {\n    return new Promise((resolve, reject) => {\n      fn((err, ...args) => {\n        if (err) {\n          return reject(err)\n        }\n        return resolve(...args)\n      })\n    })\n  },\n  debuglog() {\n    return function () {}\n  },\n  format(format, ...args) {\n    // Simplified version of https://nodejs.org/api/util.html#utilformatformat-args\n    return format.replace(/%([sdifj])/g, function (...[_unused, type]) {\n      const replacement = args.shift()\n      if (type === 'f') {\n        return replacement.toFixed(6)\n      } else if (type === 'j') {\n        return JSON.stringify(replacement)\n      } else if (type === 's' && typeof replacement === 'object') {\n        const ctor = replacement.constructor !== Object ? replacement.constructor.name : ''\n        return `${ctor} {}`.trim()\n      } else {\n        return replacement.toString()\n      }\n    })\n  },\n  inspect(value) {\n    // Vastly simplified version of https://nodejs.org/api/util.html#utilinspectobject-options\n    switch (typeof value) {\n      case 'string':\n        if (value.includes(\"'\")) {\n          if (!value.includes('\"')) {\n            return `\"${value}\"`\n          } else if (!value.includes('`') && !value.includes('${')) {\n            return `\\`${value}\\``\n          }\n        }\n        return `'${value}'`\n      case 'number':\n        if (isNaN(value)) {\n          return 'NaN'\n        } else if (Object.is(value, -0)) {\n          return String(value)\n        }\n        return value\n      case 'bigint':\n        return `${String(value)}n`\n      case 'boolean':\n      case 'undefined':\n        return String(value)\n      case 'object':\n        return '{}'\n    }\n  },\n  types: {\n    isAsyncFunction(fn) {\n      return fn instanceof AsyncFunction\n    },\n    isArrayBufferView(arr) {\n      return ArrayBuffer.isView(arr)\n    }\n  },\n  isBlob,\n  deprecate(fn, message) {\n    return fn\n  },\n  addAbortListener:\n    require('events').addAbortListener ||\n    function addAbortListener(signal, listener) {\n      if (signal === undefined) {\n        throw new ERR_INVALID_ARG_TYPE('signal', 'AbortSignal', signal)\n      }\n      validateAbortSignal(signal, 'signal')\n      validateFunction(listener, 'listener')\n      let removeEventListener\n      if (signal.aborted) {\n        queueMicrotask(() => listener())\n      } else {\n        signal.addEventListener('abort', listener, {\n          __proto__: null,\n          once: true,\n          [kResistStopPropagation]: true\n        })\n        removeEventListener = () => {\n          signal.removeEventListener('abort', listener)\n        }\n      }\n      return {\n        __proto__: null,\n        [SymbolDispose]() {\n          var _removeEventListener\n          ;(_removeEventListener = removeEventListener) === null || _removeEventListener === undefined\n            ? undefined\n            : _removeEventListener()\n        }\n      }\n    },\n  AbortSignalAny:\n    AbortSignal.any ||\n    function AbortSignalAny(signals) {\n      // Fast path if there is only one signal.\n      if (signals.length === 1) {\n        return signals[0]\n      }\n      const ac = new AbortController()\n      const abort = () => ac.abort()\n      signals.forEach((signal) => {\n        validateAbortSignal(signal, 'signals')\n        signal.addEventListener('abort', abort, {\n          once: true\n        })\n      })\n      ac.signal.addEventListener(\n        'abort',\n        () => {\n          signals.forEach((signal) => signal.removeEventListener('abort', abort))\n        },\n        {\n          once: true\n        }\n      )\n      return ac.signal\n    }\n}\nmodule.exports.promisify.custom = Symbol.for('nodejs.util.promisify.custom')\n","/* replacement start */\n\nconst process = require('process/')\n\n/* replacement end */\n// Ported from https://github.com/mafintosh/pump with\n// permission from the author, Mathias Buus (@mafintosh).\n\n;('use strict')\nconst { ArrayIsArray, Promise, SymbolAsyncIterator, SymbolDispose } = require('../../ours/primordials')\nconst eos = require('./end-of-stream')\nconst { once } = require('../../ours/util')\nconst destroyImpl = require('./destroy')\nconst Duplex = require('./duplex')\nconst {\n  aggregateTwoErrors,\n  codes: {\n    ERR_INVALID_ARG_TYPE,\n    ERR_INVALID_RETURN_VALUE,\n    ERR_MISSING_ARGS,\n    ERR_STREAM_DESTROYED,\n    ERR_STREAM_PREMATURE_CLOSE\n  },\n  AbortError\n} = require('../../ours/errors')\nconst { validateFunction, validateAbortSignal } = require('../validators')\nconst {\n  isIterable,\n  isReadable,\n  isReadableNodeStream,\n  isNodeStream,\n  isTransformStream,\n  isWebStream,\n  isReadableStream,\n  isReadableFinished\n} = require('./utils')\nconst AbortController = globalThis.AbortController || require('abort-controller').AbortController\nlet PassThrough\nlet Readable\nlet addAbortListener\nfunction destroyer(stream, reading, writing) {\n  let finished = false\n  stream.on('close', () => {\n    finished = true\n  })\n  const cleanup = eos(\n    stream,\n    {\n      readable: reading,\n      writable: writing\n    },\n    (err) => {\n      finished = !err\n    }\n  )\n  return {\n    destroy: (err) => {\n      if (finished) return\n      finished = true\n      destroyImpl.destroyer(stream, err || new ERR_STREAM_DESTROYED('pipe'))\n    },\n    cleanup\n  }\n}\nfunction popCallback(streams) {\n  // Streams should never be an empty array. It should always contain at least\n  // a single stream. Therefore optimize for the average case instead of\n  // checking for length === 0 as well.\n  validateFunction(streams[streams.length - 1], 'streams[stream.length - 1]')\n  return streams.pop()\n}\nfunction makeAsyncIterable(val) {\n  if (isIterable(val)) {\n    return val\n  } else if (isReadableNodeStream(val)) {\n    // Legacy streams are not Iterable.\n    return fromReadable(val)\n  }\n  throw new ERR_INVALID_ARG_TYPE('val', ['Readable', 'Iterable', 'AsyncIterable'], val)\n}\nasync function* fromReadable(val) {\n  if (!Readable) {\n    Readable = require('./readable')\n  }\n  yield* Readable.prototype[SymbolAsyncIterator].call(val)\n}\nasync function pumpToNode(iterable, writable, finish, { end }) {\n  let error\n  let onresolve = null\n  const resume = (err) => {\n    if (err) {\n      error = err\n    }\n    if (onresolve) {\n      const callback = onresolve\n      onresolve = null\n      callback()\n    }\n  }\n  const wait = () =>\n    new Promise((resolve, reject) => {\n      if (error) {\n        reject(error)\n      } else {\n        onresolve = () => {\n          if (error) {\n            reject(error)\n          } else {\n            resolve()\n          }\n        }\n      }\n    })\n  writable.on('drain', resume)\n  const cleanup = eos(\n    writable,\n    {\n      readable: false\n    },\n    resume\n  )\n  try {\n    if (writable.writableNeedDrain) {\n      await wait()\n    }\n    for await (const chunk of iterable) {\n      if (!writable.write(chunk)) {\n        await wait()\n      }\n    }\n    if (end) {\n      writable.end()\n      await wait()\n    }\n    finish()\n  } catch (err) {\n    finish(error !== err ? aggregateTwoErrors(error, err) : err)\n  } finally {\n    cleanup()\n    writable.off('drain', resume)\n  }\n}\nasync function pumpToWeb(readable, writable, finish, { end }) {\n  if (isTransformStream(writable)) {\n    writable = writable.writable\n  }\n  // https://streams.spec.whatwg.org/#example-manual-write-with-backpressure\n  const writer = writable.getWriter()\n  try {\n    for await (const chunk of readable) {\n      await writer.ready\n      writer.write(chunk).catch(() => {})\n    }\n    await writer.ready\n    if (end) {\n      await writer.close()\n    }\n    finish()\n  } catch (err) {\n    try {\n      await writer.abort(err)\n      finish(err)\n    } catch (err) {\n      finish(err)\n    }\n  }\n}\nfunction pipeline(...streams) {\n  return pipelineImpl(streams, once(popCallback(streams)))\n}\nfunction pipelineImpl(streams, callback, opts) {\n  if (streams.length === 1 && ArrayIsArray(streams[0])) {\n    streams = streams[0]\n  }\n  if (streams.length < 2) {\n    throw new ERR_MISSING_ARGS('streams')\n  }\n  const ac = new AbortController()\n  const signal = ac.signal\n  const outerSignal = opts === null || opts === undefined ? undefined : opts.signal\n\n  // Need to cleanup event listeners if last stream is readable\n  // https://github.com/nodejs/node/issues/35452\n  const lastStreamCleanup = []\n  validateAbortSignal(outerSignal, 'options.signal')\n  function abort() {\n    finishImpl(new AbortError())\n  }\n  addAbortListener = addAbortListener || require('../../ours/util').addAbortListener\n  let disposable\n  if (outerSignal) {\n    disposable = addAbortListener(outerSignal, abort)\n  }\n  let error\n  let value\n  const destroys = []\n  let finishCount = 0\n  function finish(err) {\n    finishImpl(err, --finishCount === 0)\n  }\n  function finishImpl(err, final) {\n    var _disposable\n    if (err && (!error || error.code === 'ERR_STREAM_PREMATURE_CLOSE')) {\n      error = err\n    }\n    if (!error && !final) {\n      return\n    }\n    while (destroys.length) {\n      destroys.shift()(error)\n    }\n    ;(_disposable = disposable) === null || _disposable === undefined ? undefined : _disposable[SymbolDispose]()\n    ac.abort()\n    if (final) {\n      if (!error) {\n        lastStreamCleanup.forEach((fn) => fn())\n      }\n      process.nextTick(callback, error, value)\n    }\n  }\n  let ret\n  for (let i = 0; i < streams.length; i++) {\n    const stream = streams[i]\n    const reading = i < streams.length - 1\n    const writing = i > 0\n    const end = reading || (opts === null || opts === undefined ? undefined : opts.end) !== false\n    const isLastStream = i === streams.length - 1\n    if (isNodeStream(stream)) {\n      if (end) {\n        const { destroy, cleanup } = destroyer(stream, reading, writing)\n        destroys.push(destroy)\n        if (isReadable(stream) && isLastStream) {\n          lastStreamCleanup.push(cleanup)\n        }\n      }\n\n      // Catch stream errors that occur after pipe/pump has completed.\n      function onError(err) {\n        if (err && err.name !== 'AbortError' && err.code !== 'ERR_STREAM_PREMATURE_CLOSE') {\n          finish(err)\n        }\n      }\n      stream.on('error', onError)\n      if (isReadable(stream) && isLastStream) {\n        lastStreamCleanup.push(() => {\n          stream.removeListener('error', onError)\n        })\n      }\n    }\n    if (i === 0) {\n      if (typeof stream === 'function') {\n        ret = stream({\n          signal\n        })\n        if (!isIterable(ret)) {\n          throw new ERR_INVALID_RETURN_VALUE('Iterable, AsyncIterable or Stream', 'source', ret)\n        }\n      } else if (isIterable(stream) || isReadableNodeStream(stream) || isTransformStream(stream)) {\n        ret = stream\n      } else {\n        ret = Duplex.from(stream)\n      }\n    } else if (typeof stream === 'function') {\n      if (isTransformStream(ret)) {\n        var _ret\n        ret = makeAsyncIterable((_ret = ret) === null || _ret === undefined ? undefined : _ret.readable)\n      } else {\n        ret = makeAsyncIterable(ret)\n      }\n      ret = stream(ret, {\n        signal\n      })\n      if (reading) {\n        if (!isIterable(ret, true)) {\n          throw new ERR_INVALID_RETURN_VALUE('AsyncIterable', `transform[${i - 1}]`, ret)\n        }\n      } else {\n        var _ret2\n        if (!PassThrough) {\n          PassThrough = require('./passthrough')\n        }\n\n        // If the last argument to pipeline is not a stream\n        // we must create a proxy stream so that pipeline(...)\n        // always returns a stream which can be further\n        // composed through `.pipe(stream)`.\n\n        const pt = new PassThrough({\n          objectMode: true\n        })\n\n        // Handle Promises/A+ spec, `then` could be a getter that throws on\n        // second use.\n        const then = (_ret2 = ret) === null || _ret2 === undefined ? undefined : _ret2.then\n        if (typeof then === 'function') {\n          finishCount++\n          then.call(\n            ret,\n            (val) => {\n              value = val\n              if (val != null) {\n                pt.write(val)\n              }\n              if (end) {\n                pt.end()\n              }\n              process.nextTick(finish)\n            },\n            (err) => {\n              pt.destroy(err)\n              process.nextTick(finish, err)\n            }\n          )\n        } else if (isIterable(ret, true)) {\n          finishCount++\n          pumpToNode(ret, pt, finish, {\n            end\n          })\n        } else if (isReadableStream(ret) || isTransformStream(ret)) {\n          const toRead = ret.readable || ret\n          finishCount++\n          pumpToNode(toRead, pt, finish, {\n            end\n          })\n        } else {\n          throw new ERR_INVALID_RETURN_VALUE('AsyncIterable or Promise', 'destination', ret)\n        }\n        ret = pt\n        const { destroy, cleanup } = destroyer(ret, false, true)\n        destroys.push(destroy)\n        if (isLastStream) {\n          lastStreamCleanup.push(cleanup)\n        }\n      }\n    } else if (isNodeStream(stream)) {\n      if (isReadableNodeStream(ret)) {\n        finishCount += 2\n        const cleanup = pipe(ret, stream, finish, {\n          end\n        })\n        if (isReadable(stream) && isLastStream) {\n          lastStreamCleanup.push(cleanup)\n        }\n      } else if (isTransformStream(ret) || isReadableStream(ret)) {\n        const toRead = ret.readable || ret\n        finishCount++\n        pumpToNode(toRead, stream, finish, {\n          end\n        })\n      } else if (isIterable(ret)) {\n        finishCount++\n        pumpToNode(ret, stream, finish, {\n          end\n        })\n      } else {\n        throw new ERR_INVALID_ARG_TYPE(\n          'val',\n          ['Readable', 'Iterable', 'AsyncIterable', 'ReadableStream', 'TransformStream'],\n          ret\n        )\n      }\n      ret = stream\n    } else if (isWebStream(stream)) {\n      if (isReadableNodeStream(ret)) {\n        finishCount++\n        pumpToWeb(makeAsyncIterable(ret), stream, finish, {\n          end\n        })\n      } else if (isReadableStream(ret) || isIterable(ret)) {\n        finishCount++\n        pumpToWeb(ret, stream, finish, {\n          end\n        })\n      } else if (isTransformStream(ret)) {\n        finishCount++\n        pumpToWeb(ret.readable, stream, finish, {\n          end\n        })\n      } else {\n        throw new ERR_INVALID_ARG_TYPE(\n          'val',\n          ['Readable', 'Iterable', 'AsyncIterable', 'ReadableStream', 'TransformStream'],\n          ret\n        )\n      }\n      ret = stream\n    } else {\n      ret = Duplex.from(stream)\n    }\n  }\n  if (\n    (signal !== null && signal !== undefined && signal.aborted) ||\n    (outerSignal !== null && outerSignal !== undefined && outerSignal.aborted)\n  ) {\n    process.nextTick(abort)\n  }\n  return ret\n}\nfunction pipe(src, dst, finish, { end }) {\n  let ended = false\n  dst.on('close', () => {\n    if (!ended) {\n      // Finish if the destination closes before the source has completed.\n      finish(new ERR_STREAM_PREMATURE_CLOSE())\n    }\n  })\n  src.pipe(dst, {\n    end: false\n  }) // If end is true we already will have a listener to end dst.\n\n  if (end) {\n    // Compat. Before node v10.12.0 stdio used to throw an error so\n    // pipe() did/does not end() stdio destinations.\n    // Now they allow it but \"secretly\" don't close the underlying fd.\n\n    function endFn() {\n      ended = true\n      dst.end()\n    }\n    if (isReadableFinished(src)) {\n      // End the destination if the source has already ended.\n      process.nextTick(endFn)\n    } else {\n      src.once('end', endFn)\n    }\n  } else {\n    finish()\n  }\n  eos(\n    src,\n    {\n      readable: true,\n      writable: false\n    },\n    (err) => {\n      const rState = src._readableState\n      if (\n        err &&\n        err.code === 'ERR_STREAM_PREMATURE_CLOSE' &&\n        rState &&\n        rState.ended &&\n        !rState.errored &&\n        !rState.errorEmitted\n      ) {\n        // Some readable streams will emit 'close' before 'end'. However, since\n        // this is on the readable side 'end' should still be emitted if the\n        // stream has been ended and no error emitted. This should be allowed in\n        // favor of backwards compatibility. Since the stream is piped to a\n        // destination this should not result in any observable difference.\n        // We don't need to check if this is a writable premature close since\n        // eos will only fail with premature close on the reading side for\n        // duplex streams.\n        src.once('end', finish).once('error', finish)\n      } else {\n        finish(err)\n      }\n    }\n  )\n  return eos(\n    dst,\n    {\n      readable: false,\n      writable: true\n    },\n    finish\n  )\n}\nmodule.exports = {\n  pipelineImpl,\n  pipeline\n}\n","// Copyright Joyent, Inc. and other Node contributors.\n//\n// Permission is hereby granted, free of charge, to any person obtaining a\n// copy of this software and associated documentation files (the\n// \"Software\"), to deal in the Software without restriction, including\n// without limitation the rights to use, copy, modify, merge, publish,\n// distribute, sublicense, and/or sell copies of the Software, and to permit\n// persons to whom the Software is furnished to do so, subject to the\n// following conditions:\n//\n// The above copyright notice and this permission notice shall be included\n// in all copies or substantial portions of the Software.\n//\n// THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS\n// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF\n// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN\n// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,\n// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR\n// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE\n// USE OR OTHER DEALINGS IN THE SOFTWARE.\n\n'use strict';\n\nvar R = typeof Reflect === 'object' ? Reflect : null\nvar ReflectApply = R && typeof R.apply === 'function'\n  ? R.apply\n  : function ReflectApply(target, receiver, args) {\n    return Function.prototype.apply.call(target, receiver, args);\n  }\n\nvar ReflectOwnKeys\nif (R && typeof R.ownKeys === 'function') {\n  ReflectOwnKeys = R.ownKeys\n} else if (Object.getOwnPropertySymbols) {\n  ReflectOwnKeys = function ReflectOwnKeys(target) {\n    return Object.getOwnPropertyNames(target)\n      .concat(Object.getOwnPropertySymbols(target));\n  };\n} else {\n  ReflectOwnKeys = function ReflectOwnKeys(target) {\n    return Object.getOwnPropertyNames(target);\n  };\n}\n\nfunction ProcessEmitWarning(warning) {\n  if (console && console.warn) console.warn(warning);\n}\n\nvar NumberIsNaN = Number.isNaN || function NumberIsNaN(value) {\n  return value !== value;\n}\n\nfunction EventEmitter() {\n  EventEmitter.init.call(this);\n}\nmodule.exports = EventEmitter;\nmodule.exports.once = once;\n\n// Backwards-compat with node 0.10.x\nEventEmitter.EventEmitter = EventEmitter;\n\nEventEmitter.prototype._events = undefined;\nEventEmitter.prototype._eventsCount = 0;\nEventEmitter.prototype._maxListeners = undefined;\n\n// By default EventEmitters will print a warning if more than 10 listeners are\n// added to it. This is a useful default which helps finding memory leaks.\nvar defaultMaxListeners = 10;\n\nfunction checkListener(listener) {\n  if (typeof listener !== 'function') {\n    throw new TypeError('The \"listener\" argument must be of type Function. Received type ' + typeof listener);\n  }\n}\n\nObject.defineProperty(EventEmitter, 'defaultMaxListeners', {\n  enumerable: true,\n  get: function() {\n    return defaultMaxListeners;\n  },\n  set: function(arg) {\n    if (typeof arg !== 'number' || arg < 0 || NumberIsNaN(arg)) {\n      throw new RangeError('The value of \"defaultMaxListeners\" is out of range. It must be a non-negative number. Received ' + arg + '.');\n    }\n    defaultMaxListeners = arg;\n  }\n});\n\nEventEmitter.init = function() {\n\n  if (this._events === undefined ||\n      this._events === Object.getPrototypeOf(this)._events) {\n    this._events = Object.create(null);\n    this._eventsCount = 0;\n  }\n\n  this._maxListeners = this._maxListeners || undefined;\n};\n\n// Obviously not all Emitters should be limited to 10. This function allows\n// that to be increased. Set to zero for unlimited.\nEventEmitter.prototype.setMaxListeners = function setMaxListeners(n) {\n  if (typeof n !== 'number' || n < 0 || NumberIsNaN(n)) {\n    throw new RangeError('The value of \"n\" is out of range. It must be a non-negative number. Received ' + n + '.');\n  }\n  this._maxListeners = n;\n  return this;\n};\n\nfunction _getMaxListeners(that) {\n  if (that._maxListeners === undefined)\n    return EventEmitter.defaultMaxListeners;\n  return that._maxListeners;\n}\n\nEventEmitter.prototype.getMaxListeners = function getMaxListeners() {\n  return _getMaxListeners(this);\n};\n\nEventEmitter.prototype.emit = function emit(type) {\n  var args = [];\n  for (var i = 1; i < arguments.length; i++) args.push(arguments[i]);\n  var doError = (type === 'error');\n\n  var events = this._events;\n  if (events !== undefined)\n    doError = (doError && events.error === undefined);\n  else if (!doError)\n    return false;\n\n  // If there is no 'error' event listener then throw.\n  if (doError) {\n    var er;\n    if (args.length > 0)\n      er = args[0];\n    if (er instanceof Error) {\n      // Note: The comments on the `throw` lines are intentional, they show\n      // up in Node's output if this results in an unhandled exception.\n      throw er; // Unhandled 'error' event\n    }\n    // At least give some kind of context to the user\n    var err = new Error('Unhandled error.' + (er ? ' (' + er.message + ')' : ''));\n    err.context = er;\n    throw err; // Unhandled 'error' event\n  }\n\n  var handler = events[type];\n\n  if (handler === undefined)\n    return false;\n\n  if (typeof handler === 'function') {\n    ReflectApply(handler, this, args);\n  } else {\n    var len = handler.length;\n    var listeners = arrayClone(handler, len);\n    for (var i = 0; i < len; ++i)\n      ReflectApply(listeners[i], this, args);\n  }\n\n  return true;\n};\n\nfunction _addListener(target, type, listener, prepend) {\n  var m;\n  var events;\n  var existing;\n\n  checkListener(listener);\n\n  events = target._events;\n  if (events === undefined) {\n    events = target._events = Object.create(null);\n    target._eventsCount = 0;\n  } else {\n    // To avoid recursion in the case that type === \"newListener\"! Before\n    // adding it to the listeners, first emit \"newListener\".\n    if (events.newListener !== undefined) {\n      target.emit('newListener', type,\n                  listener.listener ? listener.listener : listener);\n\n      // Re-assign `events` because a newListener handler could have caused the\n      // this._events to be assigned to a new object\n      events = target._events;\n    }\n    existing = events[type];\n  }\n\n  if (existing === undefined) {\n    // Optimize the case of one listener. Don't need the extra array object.\n    existing = events[type] = listener;\n    ++target._eventsCount;\n  } else {\n    if (typeof existing === 'function') {\n      // Adding the second element, need to change to array.\n      existing = events[type] =\n        prepend ? [listener, existing] : [existing, listener];\n      // If we've already got an array, just append.\n    } else if (prepend) {\n      existing.unshift(listener);\n    } else {\n      existing.push(listener);\n    }\n\n    // Check for listener leak\n    m = _getMaxListeners(target);\n    if (m > 0 && existing.length > m && !existing.warned) {\n      existing.warned = true;\n      // No error code for this since it is a Warning\n      // eslint-disable-next-line no-restricted-syntax\n      var w = new Error('Possible EventEmitter memory leak detected. ' +\n                          existing.length + ' ' + String(type) + ' listeners ' +\n                          'added. Use emitter.setMaxListeners() to ' +\n                          'increase limit');\n      w.name = 'MaxListenersExceededWarning';\n      w.emitter = target;\n      w.type = type;\n      w.count = existing.length;\n      ProcessEmitWarning(w);\n    }\n  }\n\n  return target;\n}\n\nEventEmitter.prototype.addListener = function addListener(type, listener) {\n  return _addListener(this, type, listener, false);\n};\n\nEventEmitter.prototype.on = EventEmitter.prototype.addListener;\n\nEventEmitter.prototype.prependListener =\n    function prependListener(type, listener) {\n      return _addListener(this, type, listener, true);\n    };\n\nfunction onceWrapper() {\n  if (!this.fired) {\n    this.target.removeListener(this.type, this.wrapFn);\n    this.fired = true;\n    if (arguments.length === 0)\n      return this.listener.call(this.target);\n    return this.listener.apply(this.target, arguments);\n  }\n}\n\nfunction _onceWrap(target, type, listener) {\n  var state = { fired: false, wrapFn: undefined, target: target, type: type, listener: listener };\n  var wrapped = onceWrapper.bind(state);\n  wrapped.listener = listener;\n  state.wrapFn = wrapped;\n  return wrapped;\n}\n\nEventEmitter.prototype.once = function once(type, listener) {\n  checkListener(listener);\n  this.on(type, _onceWrap(this, type, listener));\n  return this;\n};\n\nEventEmitter.prototype.prependOnceListener =\n    function prependOnceListener(type, listener) {\n      checkListener(listener);\n      this.prependListener(type, _onceWrap(this, type, listener));\n      return this;\n    };\n\n// Emits a 'removeListener' event if and only if the listener was removed.\nEventEmitter.prototype.removeListener =\n    function removeListener(type, listener) {\n      var list, events, position, i, originalListener;\n\n      checkListener(listener);\n\n      events = this._events;\n      if (events === undefined)\n        return this;\n\n      list = events[type];\n      if (list === undefined)\n        return this;\n\n      if (list === listener || list.listener === listener) {\n        if (--this._eventsCount === 0)\n          this._events = Object.create(null);\n        else {\n          delete events[type];\n          if (events.removeListener)\n            this.emit('removeListener', type, list.listener || listener);\n        }\n      } else if (typeof list !== 'function') {\n        position = -1;\n\n        for (i = list.length - 1; i >= 0; i--) {\n          if (list[i] === listener || list[i].listener === listener) {\n            originalListener = list[i].listener;\n            position = i;\n            break;\n          }\n        }\n\n        if (position < 0)\n          return this;\n\n        if (position === 0)\n          list.shift();\n        else {\n          spliceOne(list, position);\n        }\n\n        if (list.length === 1)\n          events[type] = list[0];\n\n        if (events.removeListener !== undefined)\n          this.emit('removeListener', type, originalListener || listener);\n      }\n\n      return this;\n    };\n\nEventEmitter.prototype.off = EventEmitter.prototype.removeListener;\n\nEventEmitter.prototype.removeAllListeners =\n    function removeAllListeners(type) {\n      var listeners, events, i;\n\n      events = this._events;\n      if (events === undefined)\n        return this;\n\n      // not listening for removeListener, no need to emit\n      if (events.removeListener === undefined) {\n        if (arguments.length === 0) {\n          this._events = Object.create(null);\n          this._eventsCount = 0;\n        } else if (events[type] !== undefined) {\n          if (--this._eventsCount === 0)\n            this._events = Object.create(null);\n          else\n            delete events[type];\n        }\n        return this;\n      }\n\n      // emit removeListener for all listeners on all events\n      if (arguments.length === 0) {\n        var keys = Object.keys(events);\n        var key;\n        for (i = 0; i < keys.length; ++i) {\n          key = keys[i];\n          if (key === 'removeListener') continue;\n          this.removeAllListeners(key);\n        }\n        this.removeAllListeners('removeListener');\n        this._events = Object.create(null);\n        this._eventsCount = 0;\n        return this;\n      }\n\n      listeners = events[type];\n\n      if (typeof listeners === 'function') {\n        this.removeListener(type, listeners);\n      } else if (listeners !== undefined) {\n        // LIFO order\n        for (i = listeners.length - 1; i >= 0; i--) {\n          this.removeListener(type, listeners[i]);\n        }\n      }\n\n      return this;\n    };\n\nfunction _listeners(target, type, unwrap) {\n  var events = target._events;\n\n  if (events === undefined)\n    return [];\n\n  var evlistener = events[type];\n  if (evlistener === undefined)\n    return [];\n\n  if (typeof evlistener === 'function')\n    return unwrap ? [evlistener.listener || evlistener] : [evlistener];\n\n  return unwrap ?\n    unwrapListeners(evlistener) : arrayClone(evlistener, evlistener.length);\n}\n\nEventEmitter.prototype.listeners = function listeners(type) {\n  return _listeners(this, type, true);\n};\n\nEventEmitter.prototype.rawListeners = function rawListeners(type) {\n  return _listeners(this, type, false);\n};\n\nEventEmitter.listenerCount = function(emitter, type) {\n  if (typeof emitter.listenerCount === 'function') {\n    return emitter.listenerCount(type);\n  } else {\n    return listenerCount.call(emitter, type);\n  }\n};\n\nEventEmitter.prototype.listenerCount = listenerCount;\nfunction listenerCount(type) {\n  var events = this._events;\n\n  if (events !== undefined) {\n    var evlistener = events[type];\n\n    if (typeof evlistener === 'function') {\n      return 1;\n    } else if (evlistener !== undefined) {\n      return evlistener.length;\n    }\n  }\n\n  return 0;\n}\n\nEventEmitter.prototype.eventNames = function eventNames() {\n  return this._eventsCount > 0 ? ReflectOwnKeys(this._events) : [];\n};\n\nfunction arrayClone(arr, n) {\n  var copy = new Array(n);\n  for (var i = 0; i < n; ++i)\n    copy[i] = arr[i];\n  return copy;\n}\n\nfunction spliceOne(list, index) {\n  for (; index + 1 < list.length; index++)\n    list[index] = list[index + 1];\n  list.pop();\n}\n\nfunction unwrapListeners(arr) {\n  var ret = new Array(arr.length);\n  for (var i = 0; i < ret.length; ++i) {\n    ret[i] = arr[i].listener || arr[i];\n  }\n  return ret;\n}\n\nfunction once(emitter, name) {\n  return new Promise(function (resolve, reject) {\n    function errorListener(err) {\n      emitter.removeListener(name, resolver);\n      reject(err);\n    }\n\n    function resolver() {\n      if (typeof emitter.removeListener === 'function') {\n        emitter.removeListener('error', errorListener);\n      }\n      resolve([].slice.call(arguments));\n    };\n\n    eventTargetAgnosticAddListener(emitter, name, resolver, { once: true });\n    if (name !== 'error') {\n      addErrorHandlerIfEventEmitter(emitter, errorListener, { once: true });\n    }\n  });\n}\n\nfunction addErrorHandlerIfEventEmitter(emitter, handler, flags) {\n  if (typeof emitter.on === 'function') {\n    eventTargetAgnosticAddListener(emitter, 'error', handler, flags);\n  }\n}\n\nfunction eventTargetAgnosticAddListener(emitter, name, listener, flags) {\n  if (typeof emitter.on === 'function') {\n    if (flags.once) {\n      emitter.once(name, listener);\n    } else {\n      emitter.on(name, listener);\n    }\n  } else if (typeof emitter.addEventListener === 'function') {\n    // EventTarget does not have `error` event semantics like Node\n    // EventEmitters, we do not listen for `error` events here.\n    emitter.addEventListener(name, function wrapListener(arg) {\n      // IE does not have builtin `{ once: true }` support so we\n      // have to do it manually.\n      if (flags.once) {\n        emitter.removeEventListener(name, wrapListener);\n      }\n      listener(arg);\n    });\n  } else {\n    throw new TypeError('The \"emitter\" argument must be of type EventEmitter. Received type ' + typeof emitter);\n  }\n}\n","'use strict'\n\n/*\n  This file is a reduced and adapted version of the main lib/internal/per_context/primordials.js file defined at\n\n  https://github.com/nodejs/node/blob/master/lib/internal/per_context/primordials.js\n\n  Don't try to replace with the original file and keep it up to date with the upstream file.\n*/\nmodule.exports = {\n  ArrayIsArray(self) {\n    return Array.isArray(self)\n  },\n  ArrayPrototypeIncludes(self, el) {\n    return self.includes(el)\n  },\n  ArrayPrototypeIndexOf(self, el) {\n    return self.indexOf(el)\n  },\n  ArrayPrototypeJoin(self, sep) {\n    return self.join(sep)\n  },\n  ArrayPrototypeMap(self, fn) {\n    return self.map(fn)\n  },\n  ArrayPrototypePop(self, el) {\n    return self.pop(el)\n  },\n  ArrayPrototypePush(self, el) {\n    return self.push(el)\n  },\n  ArrayPrototypeSlice(self, start, end) {\n    return self.slice(start, end)\n  },\n  Error,\n  FunctionPrototypeCall(fn, thisArgs, ...args) {\n    return fn.call(thisArgs, ...args)\n  },\n  FunctionPrototypeSymbolHasInstance(self, instance) {\n    return Function.prototype[Symbol.hasInstance].call(self, instance)\n  },\n  MathFloor: Math.floor,\n  Number,\n  NumberIsInteger: Number.isInteger,\n  NumberIsNaN: Number.isNaN,\n  NumberMAX_SAFE_INTEGER: Number.MAX_SAFE_INTEGER,\n  NumberMIN_SAFE_INTEGER: Number.MIN_SAFE_INTEGER,\n  NumberParseInt: Number.parseInt,\n  ObjectDefineProperties(self, props) {\n    return Object.defineProperties(self, props)\n  },\n  ObjectDefineProperty(self, name, prop) {\n    return Object.defineProperty(self, name, prop)\n  },\n  ObjectGetOwnPropertyDescriptor(self, name) {\n    return Object.getOwnPropertyDescriptor(self, name)\n  },\n  ObjectKeys(obj) {\n    return Object.keys(obj)\n  },\n  ObjectSetPrototypeOf(target, proto) {\n    return Object.setPrototypeOf(target, proto)\n  },\n  Promise,\n  PromisePrototypeCatch(self, fn) {\n    return self.catch(fn)\n  },\n  PromisePrototypeThen(self, thenFn, catchFn) {\n    return self.then(thenFn, catchFn)\n  },\n  PromiseReject(err) {\n    return Promise.reject(err)\n  },\n  PromiseResolve(val) {\n    return Promise.resolve(val)\n  },\n  ReflectApply: Reflect.apply,\n  RegExpPrototypeTest(self, value) {\n    return self.test(value)\n  },\n  SafeSet: Set,\n  String,\n  StringPrototypeSlice(self, start, end) {\n    return self.slice(start, end)\n  },\n  StringPrototypeToLowerCase(self) {\n    return self.toLowerCase()\n  },\n  StringPrototypeToUpperCase(self) {\n    return self.toUpperCase()\n  },\n  StringPrototypeTrim(self) {\n    return self.trim()\n  },\n  Symbol,\n  SymbolFor: Symbol.for,\n  SymbolAsyncIterator: Symbol.asyncIterator,\n  SymbolHasInstance: Symbol.hasInstance,\n  SymbolIterator: Symbol.iterator,\n  SymbolDispose: Symbol.dispose || Symbol('Symbol.dispose'),\n  SymbolAsyncDispose: Symbol.asyncDispose || Symbol('Symbol.asyncDispose'),\n  TypedArrayPrototypeSet(self, buf, len) {\n    return self.set(buf, len)\n  },\n  Boolean: Boolean,\n  Uint8Array\n}\n","'use strict'\n\nconst { ArrayPrototypePop, Promise } = require('../ours/primordials')\nconst { isIterable, isNodeStream, isWebStream } = require('../internal/streams/utils')\nconst { pipelineImpl: pl } = require('../internal/streams/pipeline')\nconst { finished } = require('../internal/streams/end-of-stream')\nrequire('../../lib/stream.js')\nfunction pipeline(...streams) {\n  return new Promise((resolve, reject) => {\n    let signal\n    let end\n    const lastArg = streams[streams.length - 1]\n    if (\n      lastArg &&\n      typeof lastArg === 'object' &&\n      !isNodeStream(lastArg) &&\n      !isIterable(lastArg) &&\n      !isWebStream(lastArg)\n    ) {\n      const options = ArrayPrototypePop(streams)\n      signal = options.signal\n      end = options.end\n    }\n    pl(\n      streams,\n      (err, value) => {\n        if (err) {\n          reject(err)\n        } else {\n          resolve(value)\n        }\n      },\n      {\n        signal,\n        end\n      }\n    )\n  })\n}\nmodule.exports = {\n  finished,\n  pipeline\n}\n","/* replacement start */\n\nconst { Buffer } = require('buffer')\n\n/* replacement end */\n// Copyright Joyent, Inc. and other Node contributors.\n//\n// Permission is hereby granted, free of charge, to any person obtaining a\n// copy of this software and associated documentation files (the\n// \"Software\"), to deal in the Software without restriction, including\n// without limitation the rights to use, copy, modify, merge, publish,\n// distribute, sublicense, and/or sell copies of the Software, and to permit\n// persons to whom the Software is furnished to do so, subject to the\n// following conditions:\n//\n// The above copyright notice and this permission notice shall be included\n// in all copies or substantial portions of the Software.\n//\n// THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS\n// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF\n// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN\n// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,\n// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR\n// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE\n// USE OR OTHER DEALINGS IN THE SOFTWARE.\n\n;('use strict')\nconst { ObjectDefineProperty, ObjectKeys, ReflectApply } = require('./ours/primordials')\nconst {\n  promisify: { custom: customPromisify }\n} = require('./ours/util')\nconst { streamReturningOperators, promiseReturningOperators } = require('./internal/streams/operators')\nconst {\n  codes: { ERR_ILLEGAL_CONSTRUCTOR }\n} = require('./ours/errors')\nconst compose = require('./internal/streams/compose')\nconst { setDefaultHighWaterMark, getDefaultHighWaterMark } = require('./internal/streams/state')\nconst { pipeline } = require('./internal/streams/pipeline')\nconst { destroyer } = require('./internal/streams/destroy')\nconst eos = require('./internal/streams/end-of-stream')\nconst internalBuffer = {}\nconst promises = require('./stream/promises')\nconst utils = require('./internal/streams/utils')\nconst Stream = (module.exports = require('./internal/streams/legacy').Stream)\nStream.isDestroyed = utils.isDestroyed\nStream.isDisturbed = utils.isDisturbed\nStream.isErrored = utils.isErrored\nStream.isReadable = utils.isReadable\nStream.isWritable = utils.isWritable\nStream.Readable = require('./internal/streams/readable')\nfor (const key of ObjectKeys(streamReturningOperators)) {\n  const op = streamReturningOperators[key]\n  function fn(...args) {\n    if (new.target) {\n      throw ERR_ILLEGAL_CONSTRUCTOR()\n    }\n    return Stream.Readable.from(ReflectApply(op, this, args))\n  }\n  ObjectDefineProperty(fn, 'name', {\n    __proto__: null,\n    value: op.name\n  })\n  ObjectDefineProperty(fn, 'length', {\n    __proto__: null,\n    value: op.length\n  })\n  ObjectDefineProperty(Stream.Readable.prototype, key, {\n    __proto__: null,\n    value: fn,\n    enumerable: false,\n    configurable: true,\n    writable: true\n  })\n}\nfor (const key of ObjectKeys(promiseReturningOperators)) {\n  const op = promiseReturningOperators[key]\n  function fn(...args) {\n    if (new.target) {\n      throw ERR_ILLEGAL_CONSTRUCTOR()\n    }\n    return ReflectApply(op, this, args)\n  }\n  ObjectDefineProperty(fn, 'name', {\n    __proto__: null,\n    value: op.name\n  })\n  ObjectDefineProperty(fn, 'length', {\n    __proto__: null,\n    value: op.length\n  })\n  ObjectDefineProperty(Stream.Readable.prototype, key, {\n    __proto__: null,\n    value: fn,\n    enumerable: false,\n    configurable: true,\n    writable: true\n  })\n}\nStream.Writable = require('./internal/streams/writable')\nStream.Duplex = require('./internal/streams/duplex')\nStream.Transform = require('./internal/streams/transform')\nStream.PassThrough = require('./internal/streams/passthrough')\nStream.pipeline = pipeline\nconst { addAbortSignal } = require('./internal/streams/add-abort-signal')\nStream.addAbortSignal = addAbortSignal\nStream.finished = eos\nStream.destroy = destroyer\nStream.compose = compose\nStream.setDefaultHighWaterMark = setDefaultHighWaterMark\nStream.getDefaultHighWaterMark = getDefaultHighWaterMark\nObjectDefineProperty(Stream, 'promises', {\n  __proto__: null,\n  configurable: true,\n  enumerable: true,\n  get() {\n    return promises\n  }\n})\nObjectDefineProperty(pipeline, customPromisify, {\n  __proto__: null,\n  enumerable: true,\n  get() {\n    return promises.pipeline\n  }\n})\nObjectDefineProperty(eos, customPromisify, {\n  __proto__: null,\n  enumerable: true,\n  get() {\n    return promises.finished\n  }\n})\n\n// Backwards-compat with node 0.4.x\nStream.Stream = Stream\nStream._isUint8Array = function isUint8Array(value) {\n  return value instanceof Uint8Array\n}\nStream._uint8ArrayToBuffer = function _uint8ArrayToBuffer(chunk) {\n  return Buffer.from(chunk.buffer, chunk.byteOffset, chunk.byteLength)\n}\n","// Copyright Joyent, Inc. and other Node contributors.\n//\n// Permission is hereby granted, free of charge, to any person obtaining a\n// copy of this software and associated documentation files (the\n// \"Software\"), to deal in the Software without restriction, including\n// without limitation the rights to use, copy, modify, merge, publish,\n// distribute, sublicense, and/or sell copies of the Software, and to permit\n// persons to whom the Software is furnished to do so, subject to the\n// following conditions:\n//\n// The above copyright notice and this permission notice shall be included\n// in all copies or substantial portions of the Software.\n//\n// THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS\n// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF\n// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN\n// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,\n// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR\n// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE\n// USE OR OTHER DEALINGS IN THE SOFTWARE.\n\n'use strict';\n\n/*<replacement>*/\n\nvar Buffer = require('safe-buffer').Buffer;\n/*</replacement>*/\n\nvar isEncoding = Buffer.isEncoding || function (encoding) {\n  encoding = '' + encoding;\n  switch (encoding && encoding.toLowerCase()) {\n    case 'hex':case 'utf8':case 'utf-8':case 'ascii':case 'binary':case 'base64':case 'ucs2':case 'ucs-2':case 'utf16le':case 'utf-16le':case 'raw':\n      return true;\n    default:\n      return false;\n  }\n};\n\nfunction _normalizeEncoding(enc) {\n  if (!enc) return 'utf8';\n  var retried;\n  while (true) {\n    switch (enc) {\n      case 'utf8':\n      case 'utf-8':\n        return 'utf8';\n      case 'ucs2':\n      case 'ucs-2':\n      case 'utf16le':\n      case 'utf-16le':\n        return 'utf16le';\n      case 'latin1':\n      case 'binary':\n        return 'latin1';\n      case 'base64':\n      case 'ascii':\n      case 'hex':\n        return enc;\n      default:\n        if (retried) return; // undefined\n        enc = ('' + enc).toLowerCase();\n        retried = true;\n    }\n  }\n};\n\n// Do not cache `Buffer.isEncoding` when checking encoding names as some\n// modules monkey-patch it to support additional encodings\nfunction normalizeEncoding(enc) {\n  var nenc = _normalizeEncoding(enc);\n  if (typeof nenc !== 'string' && (Buffer.isEncoding === isEncoding || !isEncoding(enc))) throw new Error('Unknown encoding: ' + enc);\n  return nenc || enc;\n}\n\n// StringDecoder provides an interface for efficiently splitting a series of\n// buffers into a series of JS strings without breaking apart multi-byte\n// characters.\nexports.StringDecoder = StringDecoder;\nfunction StringDecoder(encoding) {\n  this.encoding = normalizeEncoding(encoding);\n  var nb;\n  switch (this.encoding) {\n    case 'utf16le':\n      this.text = utf16Text;\n      this.end = utf16End;\n      nb = 4;\n      break;\n    case 'utf8':\n      this.fillLast = utf8FillLast;\n      nb = 4;\n      break;\n    case 'base64':\n      this.text = base64Text;\n      this.end = base64End;\n      nb = 3;\n      break;\n    default:\n      this.write = simpleWrite;\n      this.end = simpleEnd;\n      return;\n  }\n  this.lastNeed = 0;\n  this.lastTotal = 0;\n  this.lastChar = Buffer.allocUnsafe(nb);\n}\n\nStringDecoder.prototype.write = function (buf) {\n  if (buf.length === 0) return '';\n  var r;\n  var i;\n  if (this.lastNeed) {\n    r = this.fillLast(buf);\n    if (r === undefined) return '';\n    i = this.lastNeed;\n    this.lastNeed = 0;\n  } else {\n    i = 0;\n  }\n  if (i < buf.length) return r ? r + this.text(buf, i) : this.text(buf, i);\n  return r || '';\n};\n\nStringDecoder.prototype.end = utf8End;\n\n// Returns only complete characters in a Buffer\nStringDecoder.prototype.text = utf8Text;\n\n// Attempts to complete a partial non-UTF-8 character using bytes from a Buffer\nStringDecoder.prototype.fillLast = function (buf) {\n  if (this.lastNeed <= buf.length) {\n    buf.copy(this.lastChar, this.lastTotal - this.lastNeed, 0, this.lastNeed);\n    return this.lastChar.toString(this.encoding, 0, this.lastTotal);\n  }\n  buf.copy(this.lastChar, this.lastTotal - this.lastNeed, 0, buf.length);\n  this.lastNeed -= buf.length;\n};\n\n// Checks the type of a UTF-8 byte, whether it's ASCII, a leading byte, or a\n// continuation byte. If an invalid byte is detected, -2 is returned.\nfunction utf8CheckByte(byte) {\n  if (byte <= 0x7F) return 0;else if (byte >> 5 === 0x06) return 2;else if (byte >> 4 === 0x0E) return 3;else if (byte >> 3 === 0x1E) return 4;\n  return byte >> 6 === 0x02 ? -1 : -2;\n}\n\n// Checks at most 3 bytes at the end of a Buffer in order to detect an\n// incomplete multi-byte UTF-8 character. The total number of bytes (2, 3, or 4)\n// needed to complete the UTF-8 character (if applicable) are returned.\nfunction utf8CheckIncomplete(self, buf, i) {\n  var j = buf.length - 1;\n  if (j < i) return 0;\n  var nb = utf8CheckByte(buf[j]);\n  if (nb >= 0) {\n    if (nb > 0) self.lastNeed = nb - 1;\n    return nb;\n  }\n  if (--j < i || nb === -2) return 0;\n  nb = utf8CheckByte(buf[j]);\n  if (nb >= 0) {\n    if (nb > 0) self.lastNeed = nb - 2;\n    return nb;\n  }\n  if (--j < i || nb === -2) return 0;\n  nb = utf8CheckByte(buf[j]);\n  if (nb >= 0) {\n    if (nb > 0) {\n      if (nb === 2) nb = 0;else self.lastNeed = nb - 3;\n    }\n    return nb;\n  }\n  return 0;\n}\n\n// Validates as many continuation bytes for a multi-byte UTF-8 character as\n// needed or are available. If we see a non-continuation byte where we expect\n// one, we \"replace\" the validated continuation bytes we've seen so far with\n// a single UTF-8 replacement character ('\\ufffd'), to match v8's UTF-8 decoding\n// behavior. The continuation byte check is included three times in the case\n// where all of the continuation bytes for a character exist in the same buffer.\n// It is also done this way as a slight performance increase instead of using a\n// loop.\nfunction utf8CheckExtraBytes(self, buf, p) {\n  if ((buf[0] & 0xC0) !== 0x80) {\n    self.lastNeed = 0;\n    return '\\ufffd';\n  }\n  if (self.lastNeed > 1 && buf.length > 1) {\n    if ((buf[1] & 0xC0) !== 0x80) {\n      self.lastNeed = 1;\n      return '\\ufffd';\n    }\n    if (self.lastNeed > 2 && buf.length > 2) {\n      if ((buf[2] & 0xC0) !== 0x80) {\n        self.lastNeed = 2;\n        return '\\ufffd';\n      }\n    }\n  }\n}\n\n// Attempts to complete a multi-byte UTF-8 character using bytes from a Buffer.\nfunction utf8FillLast(buf) {\n  var p = this.lastTotal - this.lastNeed;\n  var r = utf8CheckExtraBytes(this, buf, p);\n  if (r !== undefined) return r;\n  if (this.lastNeed <= buf.length) {\n    buf.copy(this.lastChar, p, 0, this.lastNeed);\n    return this.lastChar.toString(this.encoding, 0, this.lastTotal);\n  }\n  buf.copy(this.lastChar, p, 0, buf.length);\n  this.lastNeed -= buf.length;\n}\n\n// Returns all complete UTF-8 characters in a Buffer. If the Buffer ended on a\n// partial character, the character's bytes are buffered until the required\n// number of bytes are available.\nfunction utf8Text(buf, i) {\n  var total = utf8CheckIncomplete(this, buf, i);\n  if (!this.lastNeed) return buf.toString('utf8', i);\n  this.lastTotal = total;\n  var end = buf.length - (total - this.lastNeed);\n  buf.copy(this.lastChar, 0, end);\n  return buf.toString('utf8', i, end);\n}\n\n// For UTF-8, a replacement character is added when ending on a partial\n// character.\nfunction utf8End(buf) {\n  var r = buf && buf.length ? this.write(buf) : '';\n  if (this.lastNeed) return r + '\\ufffd';\n  return r;\n}\n\n// UTF-16LE typically needs two bytes per character, but even if we have an even\n// number of bytes available, we need to check if we end on a leading/high\n// surrogate. In that case, we need to wait for the next two bytes in order to\n// decode the last character properly.\nfunction utf16Text(buf, i) {\n  if ((buf.length - i) % 2 === 0) {\n    var r = buf.toString('utf16le', i);\n    if (r) {\n      var c = r.charCodeAt(r.length - 1);\n      if (c >= 0xD800 && c <= 0xDBFF) {\n        this.lastNeed = 2;\n        this.lastTotal = 4;\n        this.lastChar[0] = buf[buf.length - 2];\n        this.lastChar[1] = buf[buf.length - 1];\n        return r.slice(0, -1);\n      }\n    }\n    return r;\n  }\n  this.lastNeed = 1;\n  this.lastTotal = 2;\n  this.lastChar[0] = buf[buf.length - 1];\n  return buf.toString('utf16le', i, buf.length - 1);\n}\n\n// For UTF-16LE we do not explicitly append special replacement characters if we\n// end on a partial character, we simply let v8 handle that.\nfunction utf16End(buf) {\n  var r = buf && buf.length ? this.write(buf) : '';\n  if (this.lastNeed) {\n    var end = this.lastTotal - this.lastNeed;\n    return r + this.lastChar.toString('utf16le', 0, end);\n  }\n  return r;\n}\n\nfunction base64Text(buf, i) {\n  var n = (buf.length - i) % 3;\n  if (n === 0) return buf.toString('base64', i);\n  this.lastNeed = 3 - n;\n  this.lastTotal = 3;\n  if (n === 1) {\n    this.lastChar[0] = buf[buf.length - 1];\n  } else {\n    this.lastChar[0] = buf[buf.length - 2];\n    this.lastChar[1] = buf[buf.length - 1];\n  }\n  return buf.toString('base64', i, buf.length - n);\n}\n\nfunction base64End(buf) {\n  var r = buf && buf.length ? this.write(buf) : '';\n  if (this.lastNeed) return r + this.lastChar.toString('base64', 0, 3 - this.lastNeed);\n  return r;\n}\n\n// Pass bytes on through for single-byte encodings (e.g. ascii, latin1, hex)\nfunction simpleWrite(buf) {\n  return buf.toString(this.encoding);\n}\n\nfunction simpleEnd(buf) {\n  return buf && buf.length ? this.write(buf) : '';\n}","import 'zone.js/dist/zone'; // Included with Angular CLI.\n\ndeclare global {\n  interface Window {\n    global: any;\n  }\n}\n// console.log = () => { }\nwindow.global = window;\n(window as any)['global'] = window;\nglobal.Buffer = global.Buffer || require('buffer').Buffer;\nglobal.process = require('process');\nglobal.CryptoKey = require('crypto');\nglobal.ReadableStream = require('readable-stream');\n\n","/*! safe-buffer. MIT License. Feross Aboukhadijeh <https://feross.org/opensource> */\n/* eslint-disable node/no-deprecated-api */\nvar buffer = require('buffer')\nvar Buffer = buffer.Buffer\n\n// alternative to using Object.keys for old browsers\nfunction copyProps (src, dst) {\n  for (var key in src) {\n    dst[key] = src[key]\n  }\n}\nif (Buffer.from && Buffer.alloc && Buffer.allocUnsafe && Buffer.allocUnsafeSlow) {\n  module.exports = buffer\n} else {\n  // Copy properties from require('buffer')\n  copyProps(buffer, exports)\n  exports.Buffer = SafeBuffer\n}\n\nfunction SafeBuffer (arg, encodingOrOffset, length) {\n  return Buffer(arg, encodingOrOffset, length)\n}\n\nSafeBuffer.prototype = Object.create(Buffer.prototype)\n\n// Copy static methods from Buffer\ncopyProps(Buffer, SafeBuffer)\n\nSafeBuffer.from = function (arg, encodingOrOffset, length) {\n  if (typeof arg === 'number') {\n    throw new TypeError('Argument must not be a number')\n  }\n  return Buffer(arg, encodingOrOffset, length)\n}\n\nSafeBuffer.alloc = function (size, fill, encoding) {\n  if (typeof size !== 'number') {\n    throw new TypeError('Argument must be a number')\n  }\n  var buf = Buffer(size)\n  if (fill !== undefined) {\n    if (typeof encoding === 'string') {\n      buf.fill(fill, encoding)\n    } else {\n      buf.fill(fill)\n    }\n  } else {\n    buf.fill(0)\n  }\n  return buf\n}\n\nSafeBuffer.allocUnsafe = function (size) {\n  if (typeof size !== 'number') {\n    throw new TypeError('Argument must be a number')\n  }\n  return Buffer(size)\n}\n\nSafeBuffer.allocUnsafeSlow = function (size) {\n  if (typeof size !== 'number') {\n    throw new TypeError('Argument must be a number')\n  }\n  return buffer.SlowBuffer(size)\n}\n","/*!\n * The buffer module from node.js, for the browser.\n *\n * @author   Feross Aboukhadijeh <https://feross.org>\n * @license  MIT\n */\n/* eslint-disable no-proto */\n\n'use strict'\n\nconst base64 = require('base64-js')\nconst ieee754 = require('ieee754')\nconst customInspectSymbol =\n  (typeof Symbol === 'function' && typeof Symbol['for'] === 'function') // eslint-disable-line dot-notation\n    ? Symbol['for']('nodejs.util.inspect.custom') // eslint-disable-line dot-notation\n    : null\n\nexports.Buffer = Buffer\nexports.SlowBuffer = SlowBuffer\nexports.INSPECT_MAX_BYTES = 50\n\nconst K_MAX_LENGTH = 0x7fffffff\nexports.kMaxLength = K_MAX_LENGTH\n\n/**\n * If `Buffer.TYPED_ARRAY_SUPPORT`:\n *   === true    Use Uint8Array implementation (fastest)\n *   === false   Print warning and recommend using `buffer` v4.x which has an Object\n *               implementation (most compatible, even IE6)\n *\n * Browsers that support typed arrays are IE 10+, Firefox 4+, Chrome 7+, Safari 5.1+,\n * Opera 11.6+, iOS 4.2+.\n *\n * We report that the browser does not support typed arrays if the are not subclassable\n * using __proto__. Firefox 4-29 lacks support for adding new properties to `Uint8Array`\n * (See: https://bugzilla.mozilla.org/show_bug.cgi?id=695438). IE 10 lacks support\n * for __proto__ and has a buggy typed array implementation.\n */\nBuffer.TYPED_ARRAY_SUPPORT = typedArraySupport()\n\nif (!Buffer.TYPED_ARRAY_SUPPORT && typeof console !== 'undefined' &&\n    typeof console.error === 'function') {\n  console.error(\n    'This browser lacks typed array (Uint8Array) support which is required by ' +\n    '`buffer` v5.x. Use `buffer` v4.x if you require old browser support.'\n  )\n}\n\nfunction typedArraySupport () {\n  // Can typed array instances can be augmented?\n  try {\n    const arr = new Uint8Array(1)\n    const proto = { foo: function () { return 42 } }\n    Object.setPrototypeOf(proto, Uint8Array.prototype)\n    Object.setPrototypeOf(arr, proto)\n    return arr.foo() === 42\n  } catch (e) {\n    return false\n  }\n}\n\nObject.defineProperty(Buffer.prototype, 'parent', {\n  enumerable: true,\n  get: function () {\n    if (!Buffer.isBuffer(this)) return undefined\n    return this.buffer\n  }\n})\n\nObject.defineProperty(Buffer.prototype, 'offset', {\n  enumerable: true,\n  get: function () {\n    if (!Buffer.isBuffer(this)) return undefined\n    return this.byteOffset\n  }\n})\n\nfunction createBuffer (length) {\n  if (length > K_MAX_LENGTH) {\n    throw new RangeError('The value \"' + length + '\" is invalid for option \"size\"')\n  }\n  // Return an augmented `Uint8Array` instance\n  const buf = new Uint8Array(length)\n  Object.setPrototypeOf(buf, Buffer.prototype)\n  return buf\n}\n\n/**\n * The Buffer constructor returns instances of `Uint8Array` that have their\n * prototype changed to `Buffer.prototype`. Furthermore, `Buffer` is a subclass of\n * `Uint8Array`, so the returned instances will have all the node `Buffer` methods\n * and the `Uint8Array` methods. Square bracket notation works as expected -- it\n * returns a single octet.\n *\n * The `Uint8Array` prototype remains unmodified.\n */\n\nfunction Buffer (arg, encodingOrOffset, length) {\n  // Common case.\n  if (typeof arg === 'number') {\n    if (typeof encodingOrOffset === 'string') {\n      throw new TypeError(\n        'The \"string\" argument must be of type string. Received type number'\n      )\n    }\n    return allocUnsafe(arg)\n  }\n  return from(arg, encodingOrOffset, length)\n}\n\nBuffer.poolSize = 8192 // not used by this implementation\n\nfunction from (value, encodingOrOffset, length) {\n  if (typeof value === 'string') {\n    return fromString(value, encodingOrOffset)\n  }\n\n  if (ArrayBuffer.isView(value)) {\n    return fromArrayView(value)\n  }\n\n  if (value == null) {\n    throw new TypeError(\n      'The first argument must be one of type string, Buffer, ArrayBuffer, Array, ' +\n      'or Array-like Object. Received type ' + (typeof value)\n    )\n  }\n\n  if (isInstance(value, ArrayBuffer) ||\n      (value && isInstance(value.buffer, ArrayBuffer))) {\n    return fromArrayBuffer(value, encodingOrOffset, length)\n  }\n\n  if (typeof SharedArrayBuffer !== 'undefined' &&\n      (isInstance(value, SharedArrayBuffer) ||\n      (value && isInstance(value.buffer, SharedArrayBuffer)))) {\n    return fromArrayBuffer(value, encodingOrOffset, length)\n  }\n\n  if (typeof value === 'number') {\n    throw new TypeError(\n      'The \"value\" argument must not be of type number. Received type number'\n    )\n  }\n\n  const valueOf = value.valueOf && value.valueOf()\n  if (valueOf != null && valueOf !== value) {\n    return Buffer.from(valueOf, encodingOrOffset, length)\n  }\n\n  const b = fromObject(value)\n  if (b) return b\n\n  if (typeof Symbol !== 'undefined' && Symbol.toPrimitive != null &&\n      typeof value[Symbol.toPrimitive] === 'function') {\n    return Buffer.from(value[Symbol.toPrimitive]('string'), encodingOrOffset, length)\n  }\n\n  throw new TypeError(\n    'The first argument must be one of type string, Buffer, ArrayBuffer, Array, ' +\n    'or Array-like Object. Received type ' + (typeof value)\n  )\n}\n\n/**\n * Functionally equivalent to Buffer(arg, encoding) but throws a TypeError\n * if value is a number.\n * Buffer.from(str[, encoding])\n * Buffer.from(array)\n * Buffer.from(buffer)\n * Buffer.from(arrayBuffer[, byteOffset[, length]])\n **/\nBuffer.from = function (value, encodingOrOffset, length) {\n  return from(value, encodingOrOffset, length)\n}\n\n// Note: Change prototype *after* Buffer.from is defined to workaround Chrome bug:\n// https://github.com/feross/buffer/pull/148\nObject.setPrototypeOf(Buffer.prototype, Uint8Array.prototype)\nObject.setPrototypeOf(Buffer, Uint8Array)\n\nfunction assertSize (size) {\n  if (typeof size !== 'number') {\n    throw new TypeError('\"size\" argument must be of type number')\n  } else if (size < 0) {\n    throw new RangeError('The value \"' + size + '\" is invalid for option \"size\"')\n  }\n}\n\nfunction alloc (size, fill, encoding) {\n  assertSize(size)\n  if (size <= 0) {\n    return createBuffer(size)\n  }\n  if (fill !== undefined) {\n    // Only pay attention to encoding if it's a string. This\n    // prevents accidentally sending in a number that would\n    // be interpreted as a start offset.\n    return typeof encoding === 'string'\n      ? createBuffer(size).fill(fill, encoding)\n      : createBuffer(size).fill(fill)\n  }\n  return createBuffer(size)\n}\n\n/**\n * Creates a new filled Buffer instance.\n * alloc(size[, fill[, encoding]])\n **/\nBuffer.alloc = function (size, fill, encoding) {\n  return alloc(size, fill, encoding)\n}\n\nfunction allocUnsafe (size) {\n  assertSize(size)\n  return createBuffer(size < 0 ? 0 : checked(size) | 0)\n}\n\n/**\n * Equivalent to Buffer(num), by default creates a non-zero-filled Buffer instance.\n * */\nBuffer.allocUnsafe = function (size) {\n  return allocUnsafe(size)\n}\n/**\n * Equivalent to SlowBuffer(num), by default creates a non-zero-filled Buffer instance.\n */\nBuffer.allocUnsafeSlow = function (size) {\n  return allocUnsafe(size)\n}\n\nfunction fromString (string, encoding) {\n  if (typeof encoding !== 'string' || encoding === '') {\n    encoding = 'utf8'\n  }\n\n  if (!Buffer.isEncoding(encoding)) {\n    throw new TypeError('Unknown encoding: ' + encoding)\n  }\n\n  const length = byteLength(string, encoding) | 0\n  let buf = createBuffer(length)\n\n  const actual = buf.write(string, encoding)\n\n  if (actual !== length) {\n    // Writing a hex string, for example, that contains invalid characters will\n    // cause everything after the first invalid character to be ignored. (e.g.\n    // 'abxxcd' will be treated as 'ab')\n    buf = buf.slice(0, actual)\n  }\n\n  return buf\n}\n\nfunction fromArrayLike (array) {\n  const length = array.length < 0 ? 0 : checked(array.length) | 0\n  const buf = createBuffer(length)\n  for (let i = 0; i < length; i += 1) {\n    buf[i] = array[i] & 255\n  }\n  return buf\n}\n\nfunction fromArrayView (arrayView) {\n  if (isInstance(arrayView, Uint8Array)) {\n    const copy = new Uint8Array(arrayView)\n    return fromArrayBuffer(copy.buffer, copy.byteOffset, copy.byteLength)\n  }\n  return fromArrayLike(arrayView)\n}\n\nfunction fromArrayBuffer (array, byteOffset, length) {\n  if (byteOffset < 0 || array.byteLength < byteOffset) {\n    throw new RangeError('\"offset\" is outside of buffer bounds')\n  }\n\n  if (array.byteLength < byteOffset + (length || 0)) {\n    throw new RangeError('\"length\" is outside of buffer bounds')\n  }\n\n  let buf\n  if (byteOffset === undefined && length === undefined) {\n    buf = new Uint8Array(array)\n  } else if (length === undefined) {\n    buf = new Uint8Array(array, byteOffset)\n  } else {\n    buf = new Uint8Array(array, byteOffset, length)\n  }\n\n  // Return an augmented `Uint8Array` instance\n  Object.setPrototypeOf(buf, Buffer.prototype)\n\n  return buf\n}\n\nfunction fromObject (obj) {\n  if (Buffer.isBuffer(obj)) {\n    const len = checked(obj.length) | 0\n    const buf = createBuffer(len)\n\n    if (buf.length === 0) {\n      return buf\n    }\n\n    obj.copy(buf, 0, 0, len)\n    return buf\n  }\n\n  if (obj.length !== undefined) {\n    if (typeof obj.length !== 'number' || numberIsNaN(obj.length)) {\n      return createBuffer(0)\n    }\n    return fromArrayLike(obj)\n  }\n\n  if (obj.type === 'Buffer' && Array.isArray(obj.data)) {\n    return fromArrayLike(obj.data)\n  }\n}\n\nfunction checked (length) {\n  // Note: cannot use `length < K_MAX_LENGTH` here because that fails when\n  // length is NaN (which is otherwise coerced to zero.)\n  if (length >= K_MAX_LENGTH) {\n    throw new RangeError('Attempt to allocate Buffer larger than maximum ' +\n                         'size: 0x' + K_MAX_LENGTH.toString(16) + ' bytes')\n  }\n  return length | 0\n}\n\nfunction SlowBuffer (length) {\n  if (+length != length) { // eslint-disable-line eqeqeq\n    length = 0\n  }\n  return Buffer.alloc(+length)\n}\n\nBuffer.isBuffer = function isBuffer (b) {\n  return b != null && b._isBuffer === true &&\n    b !== Buffer.prototype // so Buffer.isBuffer(Buffer.prototype) will be false\n}\n\nBuffer.compare = function compare (a, b) {\n  if (isInstance(a, Uint8Array)) a = Buffer.from(a, a.offset, a.byteLength)\n  if (isInstance(b, Uint8Array)) b = Buffer.from(b, b.offset, b.byteLength)\n  if (!Buffer.isBuffer(a) || !Buffer.isBuffer(b)) {\n    throw new TypeError(\n      'The \"buf1\", \"buf2\" arguments must be one of type Buffer or Uint8Array'\n    )\n  }\n\n  if (a === b) return 0\n\n  let x = a.length\n  let y = b.length\n\n  for (let i = 0, len = Math.min(x, y); i < len; ++i) {\n    if (a[i] !== b[i]) {\n      x = a[i]\n      y = b[i]\n      break\n    }\n  }\n\n  if (x < y) return -1\n  if (y < x) return 1\n  return 0\n}\n\nBuffer.isEncoding = function isEncoding (encoding) {\n  switch (String(encoding).toLowerCase()) {\n    case 'hex':\n    case 'utf8':\n    case 'utf-8':\n    case 'ascii':\n    case 'latin1':\n    case 'binary':\n    case 'base64':\n    case 'ucs2':\n    case 'ucs-2':\n    case 'utf16le':\n    case 'utf-16le':\n      return true\n    default:\n      return false\n  }\n}\n\nBuffer.concat = function concat (list, length) {\n  if (!Array.isArray(list)) {\n    throw new TypeError('\"list\" argument must be an Array of Buffers')\n  }\n\n  if (list.length === 0) {\n    return Buffer.alloc(0)\n  }\n\n  let i\n  if (length === undefined) {\n    length = 0\n    for (i = 0; i < list.length; ++i) {\n      length += list[i].length\n    }\n  }\n\n  const buffer = Buffer.allocUnsafe(length)\n  let pos = 0\n  for (i = 0; i < list.length; ++i) {\n    let buf = list[i]\n    if (isInstance(buf, Uint8Array)) {\n      if (pos + buf.length > buffer.length) {\n        if (!Buffer.isBuffer(buf)) buf = Buffer.from(buf)\n        buf.copy(buffer, pos)\n      } else {\n        Uint8Array.prototype.set.call(\n          buffer,\n          buf,\n          pos\n        )\n      }\n    } else if (!Buffer.isBuffer(buf)) {\n      throw new TypeError('\"list\" argument must be an Array of Buffers')\n    } else {\n      buf.copy(buffer, pos)\n    }\n    pos += buf.length\n  }\n  return buffer\n}\n\nfunction byteLength (string, encoding) {\n  if (Buffer.isBuffer(string)) {\n    return string.length\n  }\n  if (ArrayBuffer.isView(string) || isInstance(string, ArrayBuffer)) {\n    return string.byteLength\n  }\n  if (typeof string !== 'string') {\n    throw new TypeError(\n      'The \"string\" argument must be one of type string, Buffer, or ArrayBuffer. ' +\n      'Received type ' + typeof string\n    )\n  }\n\n  const len = string.length\n  const mustMatch = (arguments.length > 2 && arguments[2] === true)\n  if (!mustMatch && len === 0) return 0\n\n  // Use a for loop to avoid recursion\n  let loweredCase = false\n  for (;;) {\n    switch (encoding) {\n      case 'ascii':\n      case 'latin1':\n      case 'binary':\n        return len\n      case 'utf8':\n      case 'utf-8':\n        return utf8ToBytes(string).length\n      case 'ucs2':\n      case 'ucs-2':\n      case 'utf16le':\n      case 'utf-16le':\n        return len * 2\n      case 'hex':\n        return len >>> 1\n      case 'base64':\n        return base64ToBytes(string).length\n      default:\n        if (loweredCase) {\n          return mustMatch ? -1 : utf8ToBytes(string).length // assume utf8\n        }\n        encoding = ('' + encoding).toLowerCase()\n        loweredCase = true\n    }\n  }\n}\nBuffer.byteLength = byteLength\n\nfunction slowToString (encoding, start, end) {\n  let loweredCase = false\n\n  // No need to verify that \"this.length <= MAX_UINT32\" since it's a read-only\n  // property of a typed array.\n\n  // This behaves neither like String nor Uint8Array in that we set start/end\n  // to their upper/lower bounds if the value passed is out of range.\n  // undefined is handled specially as per ECMA-262 6th Edition,\n  // Section 13.3.3.7 Runtime Semantics: KeyedBindingInitialization.\n  if (start === undefined || start < 0) {\n    start = 0\n  }\n  // Return early if start > this.length. Done here to prevent potential uint32\n  // coercion fail below.\n  if (start > this.length) {\n    return ''\n  }\n\n  if (end === undefined || end > this.length) {\n    end = this.length\n  }\n\n  if (end <= 0) {\n    return ''\n  }\n\n  // Force coercion to uint32. This will also coerce falsey/NaN values to 0.\n  end >>>= 0\n  start >>>= 0\n\n  if (end <= start) {\n    return ''\n  }\n\n  if (!encoding) encoding = 'utf8'\n\n  while (true) {\n    switch (encoding) {\n      case 'hex':\n        return hexSlice(this, start, end)\n\n      case 'utf8':\n      case 'utf-8':\n        return utf8Slice(this, start, end)\n\n      case 'ascii':\n        return asciiSlice(this, start, end)\n\n      case 'latin1':\n      case 'binary':\n        return latin1Slice(this, start, end)\n\n      case 'base64':\n        return base64Slice(this, start, end)\n\n      case 'ucs2':\n      case 'ucs-2':\n      case 'utf16le':\n      case 'utf-16le':\n        return utf16leSlice(this, start, end)\n\n      default:\n        if (loweredCase) throw new TypeError('Unknown encoding: ' + encoding)\n        encoding = (encoding + '').toLowerCase()\n        loweredCase = true\n    }\n  }\n}\n\n// This property is used by `Buffer.isBuffer` (and the `is-buffer` npm package)\n// to detect a Buffer instance. It's not possible to use `instanceof Buffer`\n// reliably in a browserify context because there could be multiple different\n// copies of the 'buffer' package in use. This method works even for Buffer\n// instances that were created from another copy of the `buffer` package.\n// See: https://github.com/feross/buffer/issues/154\nBuffer.prototype._isBuffer = true\n\nfunction swap (b, n, m) {\n  const i = b[n]\n  b[n] = b[m]\n  b[m] = i\n}\n\nBuffer.prototype.swap16 = function swap16 () {\n  const len = this.length\n  if (len % 2 !== 0) {\n    throw new RangeError('Buffer size must be a multiple of 16-bits')\n  }\n  for (let i = 0; i < len; i += 2) {\n    swap(this, i, i + 1)\n  }\n  return this\n}\n\nBuffer.prototype.swap32 = function swap32 () {\n  const len = this.length\n  if (len % 4 !== 0) {\n    throw new RangeError('Buffer size must be a multiple of 32-bits')\n  }\n  for (let i = 0; i < len; i += 4) {\n    swap(this, i, i + 3)\n    swap(this, i + 1, i + 2)\n  }\n  return this\n}\n\nBuffer.prototype.swap64 = function swap64 () {\n  const len = this.length\n  if (len % 8 !== 0) {\n    throw new RangeError('Buffer size must be a multiple of 64-bits')\n  }\n  for (let i = 0; i < len; i += 8) {\n    swap(this, i, i + 7)\n    swap(this, i + 1, i + 6)\n    swap(this, i + 2, i + 5)\n    swap(this, i + 3, i + 4)\n  }\n  return this\n}\n\nBuffer.prototype.toString = function toString () {\n  const length = this.length\n  if (length === 0) return ''\n  if (arguments.length === 0) return utf8Slice(this, 0, length)\n  return slowToString.apply(this, arguments)\n}\n\nBuffer.prototype.toLocaleString = Buffer.prototype.toString\n\nBuffer.prototype.equals = function equals (b) {\n  if (!Buffer.isBuffer(b)) throw new TypeError('Argument must be a Buffer')\n  if (this === b) return true\n  return Buffer.compare(this, b) === 0\n}\n\nBuffer.prototype.inspect = function inspect () {\n  let str = ''\n  const max = exports.INSPECT_MAX_BYTES\n  str = this.toString('hex', 0, max).replace(/(.{2})/g, '$1 ').trim()\n  if (this.length > max) str += ' ... '\n  return '<Buffer ' + str + '>'\n}\nif (customInspectSymbol) {\n  Buffer.prototype[customInspectSymbol] = Buffer.prototype.inspect\n}\n\nBuffer.prototype.compare = function compare (target, start, end, thisStart, thisEnd) {\n  if (isInstance(target, Uint8Array)) {\n    target = Buffer.from(target, target.offset, target.byteLength)\n  }\n  if (!Buffer.isBuffer(target)) {\n    throw new TypeError(\n      'The \"target\" argument must be one of type Buffer or Uint8Array. ' +\n      'Received type ' + (typeof target)\n    )\n  }\n\n  if (start === undefined) {\n    start = 0\n  }\n  if (end === undefined) {\n    end = target ? target.length : 0\n  }\n  if (thisStart === undefined) {\n    thisStart = 0\n  }\n  if (thisEnd === undefined) {\n    thisEnd = this.length\n  }\n\n  if (start < 0 || end > target.length || thisStart < 0 || thisEnd > this.length) {\n    throw new RangeError('out of range index')\n  }\n\n  if (thisStart >= thisEnd && start >= end) {\n    return 0\n  }\n  if (thisStart >= thisEnd) {\n    return -1\n  }\n  if (start >= end) {\n    return 1\n  }\n\n  start >>>= 0\n  end >>>= 0\n  thisStart >>>= 0\n  thisEnd >>>= 0\n\n  if (this === target) return 0\n\n  let x = thisEnd - thisStart\n  let y = end - start\n  const len = Math.min(x, y)\n\n  const thisCopy = this.slice(thisStart, thisEnd)\n  const targetCopy = target.slice(start, end)\n\n  for (let i = 0; i < len; ++i) {\n    if (thisCopy[i] !== targetCopy[i]) {\n      x = thisCopy[i]\n      y = targetCopy[i]\n      break\n    }\n  }\n\n  if (x < y) return -1\n  if (y < x) return 1\n  return 0\n}\n\n// Finds either the first index of `val` in `buffer` at offset >= `byteOffset`,\n// OR the last index of `val` in `buffer` at offset <= `byteOffset`.\n//\n// Arguments:\n// - buffer - a Buffer to search\n// - val - a string, Buffer, or number\n// - byteOffset - an index into `buffer`; will be clamped to an int32\n// - encoding - an optional encoding, relevant is val is a string\n// - dir - true for indexOf, false for lastIndexOf\nfunction bidirectionalIndexOf (buffer, val, byteOffset, encoding, dir) {\n  // Empty buffer means no match\n  if (buffer.length === 0) return -1\n\n  // Normalize byteOffset\n  if (typeof byteOffset === 'string') {\n    encoding = byteOffset\n    byteOffset = 0\n  } else if (byteOffset > 0x7fffffff) {\n    byteOffset = 0x7fffffff\n  } else if (byteOffset < -0x80000000) {\n    byteOffset = -0x80000000\n  }\n  byteOffset = +byteOffset // Coerce to Number.\n  if (numberIsNaN(byteOffset)) {\n    // byteOffset: it it's undefined, null, NaN, \"foo\", etc, search whole buffer\n    byteOffset = dir ? 0 : (buffer.length - 1)\n  }\n\n  // Normalize byteOffset: negative offsets start from the end of the buffer\n  if (byteOffset < 0) byteOffset = buffer.length + byteOffset\n  if (byteOffset >= buffer.length) {\n    if (dir) return -1\n    else byteOffset = buffer.length - 1\n  } else if (byteOffset < 0) {\n    if (dir) byteOffset = 0\n    else return -1\n  }\n\n  // Normalize val\n  if (typeof val === 'string') {\n    val = Buffer.from(val, encoding)\n  }\n\n  // Finally, search either indexOf (if dir is true) or lastIndexOf\n  if (Buffer.isBuffer(val)) {\n    // Special case: looking for empty string/buffer always fails\n    if (val.length === 0) {\n      return -1\n    }\n    return arrayIndexOf(buffer, val, byteOffset, encoding, dir)\n  } else if (typeof val === 'number') {\n    val = val & 0xFF // Search for a byte value [0-255]\n    if (typeof Uint8Array.prototype.indexOf === 'function') {\n      if (dir) {\n        return Uint8Array.prototype.indexOf.call(buffer, val, byteOffset)\n      } else {\n        return Uint8Array.prototype.lastIndexOf.call(buffer, val, byteOffset)\n      }\n    }\n    return arrayIndexOf(buffer, [val], byteOffset, encoding, dir)\n  }\n\n  throw new TypeError('val must be string, number or Buffer')\n}\n\nfunction arrayIndexOf (arr, val, byteOffset, encoding, dir) {\n  let indexSize = 1\n  let arrLength = arr.length\n  let valLength = val.length\n\n  if (encoding !== undefined) {\n    encoding = String(encoding).toLowerCase()\n    if (encoding === 'ucs2' || encoding === 'ucs-2' ||\n        encoding === 'utf16le' || encoding === 'utf-16le') {\n      if (arr.length < 2 || val.length < 2) {\n        return -1\n      }\n      indexSize = 2\n      arrLength /= 2\n      valLength /= 2\n      byteOffset /= 2\n    }\n  }\n\n  function read (buf, i) {\n    if (indexSize === 1) {\n      return buf[i]\n    } else {\n      return buf.readUInt16BE(i * indexSize)\n    }\n  }\n\n  let i\n  if (dir) {\n    let foundIndex = -1\n    for (i = byteOffset; i < arrLength; i++) {\n      if (read(arr, i) === read(val, foundIndex === -1 ? 0 : i - foundIndex)) {\n        if (foundIndex === -1) foundIndex = i\n        if (i - foundIndex + 1 === valLength) return foundIndex * indexSize\n      } else {\n        if (foundIndex !== -1) i -= i - foundIndex\n        foundIndex = -1\n      }\n    }\n  } else {\n    if (byteOffset + valLength > arrLength) byteOffset = arrLength - valLength\n    for (i = byteOffset; i >= 0; i--) {\n      let found = true\n      for (let j = 0; j < valLength; j++) {\n        if (read(arr, i + j) !== read(val, j)) {\n          found = false\n          break\n        }\n      }\n      if (found) return i\n    }\n  }\n\n  return -1\n}\n\nBuffer.prototype.includes = function includes (val, byteOffset, encoding) {\n  return this.indexOf(val, byteOffset, encoding) !== -1\n}\n\nBuffer.prototype.indexOf = function indexOf (val, byteOffset, encoding) {\n  return bidirectionalIndexOf(this, val, byteOffset, encoding, true)\n}\n\nBuffer.prototype.lastIndexOf = function lastIndexOf (val, byteOffset, encoding) {\n  return bidirectionalIndexOf(this, val, byteOffset, encoding, false)\n}\n\nfunction hexWrite (buf, string, offset, length) {\n  offset = Number(offset) || 0\n  const remaining = buf.length - offset\n  if (!length) {\n    length = remaining\n  } else {\n    length = Number(length)\n    if (length > remaining) {\n      length = remaining\n    }\n  }\n\n  const strLen = string.length\n\n  if (length > strLen / 2) {\n    length = strLen / 2\n  }\n  let i\n  for (i = 0; i < length; ++i) {\n    const parsed = parseInt(string.substr(i * 2, 2), 16)\n    if (numberIsNaN(parsed)) return i\n    buf[offset + i] = parsed\n  }\n  return i\n}\n\nfunction utf8Write (buf, string, offset, length) {\n  return blitBuffer(utf8ToBytes(string, buf.length - offset), buf, offset, length)\n}\n\nfunction asciiWrite (buf, string, offset, length) {\n  return blitBuffer(asciiToBytes(string), buf, offset, length)\n}\n\nfunction base64Write (buf, string, offset, length) {\n  return blitBuffer(base64ToBytes(string), buf, offset, length)\n}\n\nfunction ucs2Write (buf, string, offset, length) {\n  return blitBuffer(utf16leToBytes(string, buf.length - offset), buf, offset, length)\n}\n\nBuffer.prototype.write = function write (string, offset, length, encoding) {\n  // Buffer#write(string)\n  if (offset === undefined) {\n    encoding = 'utf8'\n    length = this.length\n    offset = 0\n  // Buffer#write(string, encoding)\n  } else if (length === undefined && typeof offset === 'string') {\n    encoding = offset\n    length = this.length\n    offset = 0\n  // Buffer#write(string, offset[, length][, encoding])\n  } else if (isFinite(offset)) {\n    offset = offset >>> 0\n    if (isFinite(length)) {\n      length = length >>> 0\n      if (encoding === undefined) encoding = 'utf8'\n    } else {\n      encoding = length\n      length = undefined\n    }\n  } else {\n    throw new Error(\n      'Buffer.write(string, encoding, offset[, length]) is no longer supported'\n    )\n  }\n\n  const remaining = this.length - offset\n  if (length === undefined || length > remaining) length = remaining\n\n  if ((string.length > 0 && (length < 0 || offset < 0)) || offset > this.length) {\n    throw new RangeError('Attempt to write outside buffer bounds')\n  }\n\n  if (!encoding) encoding = 'utf8'\n\n  let loweredCase = false\n  for (;;) {\n    switch (encoding) {\n      case 'hex':\n        return hexWrite(this, string, offset, length)\n\n      case 'utf8':\n      case 'utf-8':\n        return utf8Write(this, string, offset, length)\n\n      case 'ascii':\n      case 'latin1':\n      case 'binary':\n        return asciiWrite(this, string, offset, length)\n\n      case 'base64':\n        // Warning: maxLength not taken into account in base64Write\n        return base64Write(this, string, offset, length)\n\n      case 'ucs2':\n      case 'ucs-2':\n      case 'utf16le':\n      case 'utf-16le':\n        return ucs2Write(this, string, offset, length)\n\n      default:\n        if (loweredCase) throw new TypeError('Unknown encoding: ' + encoding)\n        encoding = ('' + encoding).toLowerCase()\n        loweredCase = true\n    }\n  }\n}\n\nBuffer.prototype.toJSON = function toJSON () {\n  return {\n    type: 'Buffer',\n    data: Array.prototype.slice.call(this._arr || this, 0)\n  }\n}\n\nfunction base64Slice (buf, start, end) {\n  if (start === 0 && end === buf.length) {\n    return base64.fromByteArray(buf)\n  } else {\n    return base64.fromByteArray(buf.slice(start, end))\n  }\n}\n\nfunction utf8Slice (buf, start, end) {\n  end = Math.min(buf.length, end)\n  const res = []\n\n  let i = start\n  while (i < end) {\n    const firstByte = buf[i]\n    let codePoint = null\n    let bytesPerSequence = (firstByte > 0xEF)\n      ? 4\n      : (firstByte > 0xDF)\n          ? 3\n          : (firstByte > 0xBF)\n              ? 2\n              : 1\n\n    if (i + bytesPerSequence <= end) {\n      let secondByte, thirdByte, fourthByte, tempCodePoint\n\n      switch (bytesPerSequence) {\n        case 1:\n          if (firstByte < 0x80) {\n            codePoint = firstByte\n          }\n          break\n        case 2:\n          secondByte = buf[i + 1]\n          if ((secondByte & 0xC0) === 0x80) {\n            tempCodePoint = (firstByte & 0x1F) << 0x6 | (secondByte & 0x3F)\n            if (tempCodePoint > 0x7F) {\n              codePoint = tempCodePoint\n            }\n          }\n          break\n        case 3:\n          secondByte = buf[i + 1]\n          thirdByte = buf[i + 2]\n          if ((secondByte & 0xC0) === 0x80 && (thirdByte & 0xC0) === 0x80) {\n            tempCodePoint = (firstByte & 0xF) << 0xC | (secondByte & 0x3F) << 0x6 | (thirdByte & 0x3F)\n            if (tempCodePoint > 0x7FF && (tempCodePoint < 0xD800 || tempCodePoint > 0xDFFF)) {\n              codePoint = tempCodePoint\n            }\n          }\n          break\n        case 4:\n          secondByte = buf[i + 1]\n          thirdByte = buf[i + 2]\n          fourthByte = buf[i + 3]\n          if ((secondByte & 0xC0) === 0x80 && (thirdByte & 0xC0) === 0x80 && (fourthByte & 0xC0) === 0x80) {\n            tempCodePoint = (firstByte & 0xF) << 0x12 | (secondByte & 0x3F) << 0xC | (thirdByte & 0x3F) << 0x6 | (fourthByte & 0x3F)\n            if (tempCodePoint > 0xFFFF && tempCodePoint < 0x110000) {\n              codePoint = tempCodePoint\n            }\n          }\n      }\n    }\n\n    if (codePoint === null) {\n      // we did not generate a valid codePoint so insert a\n      // replacement char (U+FFFD) and advance only 1 byte\n      codePoint = 0xFFFD\n      bytesPerSequence = 1\n    } else if (codePoint > 0xFFFF) {\n      // encode to utf16 (surrogate pair dance)\n      codePoint -= 0x10000\n      res.push(codePoint >>> 10 & 0x3FF | 0xD800)\n      codePoint = 0xDC00 | codePoint & 0x3FF\n    }\n\n    res.push(codePoint)\n    i += bytesPerSequence\n  }\n\n  return decodeCodePointsArray(res)\n}\n\n// Based on http://stackoverflow.com/a/22747272/680742, the browser with\n// the lowest limit is Chrome, with 0x10000 args.\n// We go 1 magnitude less, for safety\nconst MAX_ARGUMENTS_LENGTH = 0x1000\n\nfunction decodeCodePointsArray (codePoints) {\n  const len = codePoints.length\n  if (len <= MAX_ARGUMENTS_LENGTH) {\n    return String.fromCharCode.apply(String, codePoints) // avoid extra slice()\n  }\n\n  // Decode in chunks to avoid \"call stack size exceeded\".\n  let res = ''\n  let i = 0\n  while (i < len) {\n    res += String.fromCharCode.apply(\n      String,\n      codePoints.slice(i, i += MAX_ARGUMENTS_LENGTH)\n    )\n  }\n  return res\n}\n\nfunction asciiSlice (buf, start, end) {\n  let ret = ''\n  end = Math.min(buf.length, end)\n\n  for (let i = start; i < end; ++i) {\n    ret += String.fromCharCode(buf[i] & 0x7F)\n  }\n  return ret\n}\n\nfunction latin1Slice (buf, start, end) {\n  let ret = ''\n  end = Math.min(buf.length, end)\n\n  for (let i = start; i < end; ++i) {\n    ret += String.fromCharCode(buf[i])\n  }\n  return ret\n}\n\nfunction hexSlice (buf, start, end) {\n  const len = buf.length\n\n  if (!start || start < 0) start = 0\n  if (!end || end < 0 || end > len) end = len\n\n  let out = ''\n  for (let i = start; i < end; ++i) {\n    out += hexSliceLookupTable[buf[i]]\n  }\n  return out\n}\n\nfunction utf16leSlice (buf, start, end) {\n  const bytes = buf.slice(start, end)\n  let res = ''\n  // If bytes.length is odd, the last 8 bits must be ignored (same as node.js)\n  for (let i = 0; i < bytes.length - 1; i += 2) {\n    res += String.fromCharCode(bytes[i] + (bytes[i + 1] * 256))\n  }\n  return res\n}\n\nBuffer.prototype.slice = function slice (start, end) {\n  const len = this.length\n  start = ~~start\n  end = end === undefined ? len : ~~end\n\n  if (start < 0) {\n    start += len\n    if (start < 0) start = 0\n  } else if (start > len) {\n    start = len\n  }\n\n  if (end < 0) {\n    end += len\n    if (end < 0) end = 0\n  } else if (end > len) {\n    end = len\n  }\n\n  if (end < start) end = start\n\n  const newBuf = this.subarray(start, end)\n  // Return an augmented `Uint8Array` instance\n  Object.setPrototypeOf(newBuf, Buffer.prototype)\n\n  return newBuf\n}\n\n/*\n * Need to make sure that buffer isn't trying to write out of bounds.\n */\nfunction checkOffset (offset, ext, length) {\n  if ((offset % 1) !== 0 || offset < 0) throw new RangeError('offset is not uint')\n  if (offset + ext > length) throw new RangeError('Trying to access beyond buffer length')\n}\n\nBuffer.prototype.readUintLE =\nBuffer.prototype.readUIntLE = function readUIntLE (offset, byteLength, noAssert) {\n  offset = offset >>> 0\n  byteLength = byteLength >>> 0\n  if (!noAssert) checkOffset(offset, byteLength, this.length)\n\n  let val = this[offset]\n  let mul = 1\n  let i = 0\n  while (++i < byteLength && (mul *= 0x100)) {\n    val += this[offset + i] * mul\n  }\n\n  return val\n}\n\nBuffer.prototype.readUintBE =\nBuffer.prototype.readUIntBE = function readUIntBE (offset, byteLength, noAssert) {\n  offset = offset >>> 0\n  byteLength = byteLength >>> 0\n  if (!noAssert) {\n    checkOffset(offset, byteLength, this.length)\n  }\n\n  let val = this[offset + --byteLength]\n  let mul = 1\n  while (byteLength > 0 && (mul *= 0x100)) {\n    val += this[offset + --byteLength] * mul\n  }\n\n  return val\n}\n\nBuffer.prototype.readUint8 =\nBuffer.prototype.readUInt8 = function readUInt8 (offset, noAssert) {\n  offset = offset >>> 0\n  if (!noAssert) checkOffset(offset, 1, this.length)\n  return this[offset]\n}\n\nBuffer.prototype.readUint16LE =\nBuffer.prototype.readUInt16LE = function readUInt16LE (offset, noAssert) {\n  offset = offset >>> 0\n  if (!noAssert) checkOffset(offset, 2, this.length)\n  return this[offset] | (this[offset + 1] << 8)\n}\n\nBuffer.prototype.readUint16BE =\nBuffer.prototype.readUInt16BE = function readUInt16BE (offset, noAssert) {\n  offset = offset >>> 0\n  if (!noAssert) checkOffset(offset, 2, this.length)\n  return (this[offset] << 8) | this[offset + 1]\n}\n\nBuffer.prototype.readUint32LE =\nBuffer.prototype.readUInt32LE = function readUInt32LE (offset, noAssert) {\n  offset = offset >>> 0\n  if (!noAssert) checkOffset(offset, 4, this.length)\n\n  return ((this[offset]) |\n      (this[offset + 1] << 8) |\n      (this[offset + 2] << 16)) +\n      (this[offset + 3] * 0x1000000)\n}\n\nBuffer.prototype.readUint32BE =\nBuffer.prototype.readUInt32BE = function readUInt32BE (offset, noAssert) {\n  offset = offset >>> 0\n  if (!noAssert) checkOffset(offset, 4, this.length)\n\n  return (this[offset] * 0x1000000) +\n    ((this[offset + 1] << 16) |\n    (this[offset + 2] << 8) |\n    this[offset + 3])\n}\n\nBuffer.prototype.readBigUInt64LE = defineBigIntMethod(function readBigUInt64LE (offset) {\n  offset = offset >>> 0\n  validateNumber(offset, 'offset')\n  const first = this[offset]\n  const last = this[offset + 7]\n  if (first === undefined || last === undefined) {\n    boundsError(offset, this.length - 8)\n  }\n\n  const lo = first +\n    this[++offset] * 2 ** 8 +\n    this[++offset] * 2 ** 16 +\n    this[++offset] * 2 ** 24\n\n  const hi = this[++offset] +\n    this[++offset] * 2 ** 8 +\n    this[++offset] * 2 ** 16 +\n    last * 2 ** 24\n\n  return BigInt(lo) + (BigInt(hi) << BigInt(32))\n})\n\nBuffer.prototype.readBigUInt64BE = defineBigIntMethod(function readBigUInt64BE (offset) {\n  offset = offset >>> 0\n  validateNumber(offset, 'offset')\n  const first = this[offset]\n  const last = this[offset + 7]\n  if (first === undefined || last === undefined) {\n    boundsError(offset, this.length - 8)\n  }\n\n  const hi = first * 2 ** 24 +\n    this[++offset] * 2 ** 16 +\n    this[++offset] * 2 ** 8 +\n    this[++offset]\n\n  const lo = this[++offset] * 2 ** 24 +\n    this[++offset] * 2 ** 16 +\n    this[++offset] * 2 ** 8 +\n    last\n\n  return (BigInt(hi) << BigInt(32)) + BigInt(lo)\n})\n\nBuffer.prototype.readIntLE = function readIntLE (offset, byteLength, noAssert) {\n  offset = offset >>> 0\n  byteLength = byteLength >>> 0\n  if (!noAssert) checkOffset(offset, byteLength, this.length)\n\n  let val = this[offset]\n  let mul = 1\n  let i = 0\n  while (++i < byteLength && (mul *= 0x100)) {\n    val += this[offset + i] * mul\n  }\n  mul *= 0x80\n\n  if (val >= mul) val -= Math.pow(2, 8 * byteLength)\n\n  return val\n}\n\nBuffer.prototype.readIntBE = function readIntBE (offset, byteLength, noAssert) {\n  offset = offset >>> 0\n  byteLength = byteLength >>> 0\n  if (!noAssert) checkOffset(offset, byteLength, this.length)\n\n  let i = byteLength\n  let mul = 1\n  let val = this[offset + --i]\n  while (i > 0 && (mul *= 0x100)) {\n    val += this[offset + --i] * mul\n  }\n  mul *= 0x80\n\n  if (val >= mul) val -= Math.pow(2, 8 * byteLength)\n\n  return val\n}\n\nBuffer.prototype.readInt8 = function readInt8 (offset, noAssert) {\n  offset = offset >>> 0\n  if (!noAssert) checkOffset(offset, 1, this.length)\n  if (!(this[offset] & 0x80)) return (this[offset])\n  return ((0xff - this[offset] + 1) * -1)\n}\n\nBuffer.prototype.readInt16LE = function readInt16LE (offset, noAssert) {\n  offset = offset >>> 0\n  if (!noAssert) checkOffset(offset, 2, this.length)\n  const val = this[offset] | (this[offset + 1] << 8)\n  return (val & 0x8000) ? val | 0xFFFF0000 : val\n}\n\nBuffer.prototype.readInt16BE = function readInt16BE (offset, noAssert) {\n  offset = offset >>> 0\n  if (!noAssert) checkOffset(offset, 2, this.length)\n  const val = this[offset + 1] | (this[offset] << 8)\n  return (val & 0x8000) ? val | 0xFFFF0000 : val\n}\n\nBuffer.prototype.readInt32LE = function readInt32LE (offset, noAssert) {\n  offset = offset >>> 0\n  if (!noAssert) checkOffset(offset, 4, this.length)\n\n  return (this[offset]) |\n    (this[offset + 1] << 8) |\n    (this[offset + 2] << 16) |\n    (this[offset + 3] << 24)\n}\n\nBuffer.prototype.readInt32BE = function readInt32BE (offset, noAssert) {\n  offset = offset >>> 0\n  if (!noAssert) checkOffset(offset, 4, this.length)\n\n  return (this[offset] << 24) |\n    (this[offset + 1] << 16) |\n    (this[offset + 2] << 8) |\n    (this[offset + 3])\n}\n\nBuffer.prototype.readBigInt64LE = defineBigIntMethod(function readBigInt64LE (offset) {\n  offset = offset >>> 0\n  validateNumber(offset, 'offset')\n  const first = this[offset]\n  const last = this[offset + 7]\n  if (first === undefined || last === undefined) {\n    boundsError(offset, this.length - 8)\n  }\n\n  const val = this[offset + 4] +\n    this[offset + 5] * 2 ** 8 +\n    this[offset + 6] * 2 ** 16 +\n    (last << 24) // Overflow\n\n  return (BigInt(val) << BigInt(32)) +\n    BigInt(first +\n    this[++offset] * 2 ** 8 +\n    this[++offset] * 2 ** 16 +\n    this[++offset] * 2 ** 24)\n})\n\nBuffer.prototype.readBigInt64BE = defineBigIntMethod(function readBigInt64BE (offset) {\n  offset = offset >>> 0\n  validateNumber(offset, 'offset')\n  const first = this[offset]\n  const last = this[offset + 7]\n  if (first === undefined || last === undefined) {\n    boundsError(offset, this.length - 8)\n  }\n\n  const val = (first << 24) + // Overflow\n    this[++offset] * 2 ** 16 +\n    this[++offset] * 2 ** 8 +\n    this[++offset]\n\n  return (BigInt(val) << BigInt(32)) +\n    BigInt(this[++offset] * 2 ** 24 +\n    this[++offset] * 2 ** 16 +\n    this[++offset] * 2 ** 8 +\n    last)\n})\n\nBuffer.prototype.readFloatLE = function readFloatLE (offset, noAssert) {\n  offset = offset >>> 0\n  if (!noAssert) checkOffset(offset, 4, this.length)\n  return ieee754.read(this, offset, true, 23, 4)\n}\n\nBuffer.prototype.readFloatBE = function readFloatBE (offset, noAssert) {\n  offset = offset >>> 0\n  if (!noAssert) checkOffset(offset, 4, this.length)\n  return ieee754.read(this, offset, false, 23, 4)\n}\n\nBuffer.prototype.readDoubleLE = function readDoubleLE (offset, noAssert) {\n  offset = offset >>> 0\n  if (!noAssert) checkOffset(offset, 8, this.length)\n  return ieee754.read(this, offset, true, 52, 8)\n}\n\nBuffer.prototype.readDoubleBE = function readDoubleBE (offset, noAssert) {\n  offset = offset >>> 0\n  if (!noAssert) checkOffset(offset, 8, this.length)\n  return ieee754.read(this, offset, false, 52, 8)\n}\n\nfunction checkInt (buf, value, offset, ext, max, min) {\n  if (!Buffer.isBuffer(buf)) throw new TypeError('\"buffer\" argument must be a Buffer instance')\n  if (value > max || value < min) throw new RangeError('\"value\" argument is out of bounds')\n  if (offset + ext > buf.length) throw new RangeError('Index out of range')\n}\n\nBuffer.prototype.writeUintLE =\nBuffer.prototype.writeUIntLE = function writeUIntLE (value, offset, byteLength, noAssert) {\n  value = +value\n  offset = offset >>> 0\n  byteLength = byteLength >>> 0\n  if (!noAssert) {\n    const maxBytes = Math.pow(2, 8 * byteLength) - 1\n    checkInt(this, value, offset, byteLength, maxBytes, 0)\n  }\n\n  let mul = 1\n  let i = 0\n  this[offset] = value & 0xFF\n  while (++i < byteLength && (mul *= 0x100)) {\n    this[offset + i] = (value / mul) & 0xFF\n  }\n\n  return offset + byteLength\n}\n\nBuffer.prototype.writeUintBE =\nBuffer.prototype.writeUIntBE = function writeUIntBE (value, offset, byteLength, noAssert) {\n  value = +value\n  offset = offset >>> 0\n  byteLength = byteLength >>> 0\n  if (!noAssert) {\n    const maxBytes = Math.pow(2, 8 * byteLength) - 1\n    checkInt(this, value, offset, byteLength, maxBytes, 0)\n  }\n\n  let i = byteLength - 1\n  let mul = 1\n  this[offset + i] = value & 0xFF\n  while (--i >= 0 && (mul *= 0x100)) {\n    this[offset + i] = (value / mul) & 0xFF\n  }\n\n  return offset + byteLength\n}\n\nBuffer.prototype.writeUint8 =\nBuffer.prototype.writeUInt8 = function writeUInt8 (value, offset, noAssert) {\n  value = +value\n  offset = offset >>> 0\n  if (!noAssert) checkInt(this, value, offset, 1, 0xff, 0)\n  this[offset] = (value & 0xff)\n  return offset + 1\n}\n\nBuffer.prototype.writeUint16LE =\nBuffer.prototype.writeUInt16LE = function writeUInt16LE (value, offset, noAssert) {\n  value = +value\n  offset = offset >>> 0\n  if (!noAssert) checkInt(this, value, offset, 2, 0xffff, 0)\n  this[offset] = (value & 0xff)\n  this[offset + 1] = (value >>> 8)\n  return offset + 2\n}\n\nBuffer.prototype.writeUint16BE =\nBuffer.prototype.writeUInt16BE = function writeUInt16BE (value, offset, noAssert) {\n  value = +value\n  offset = offset >>> 0\n  if (!noAssert) checkInt(this, value, offset, 2, 0xffff, 0)\n  this[offset] = (value >>> 8)\n  this[offset + 1] = (value & 0xff)\n  return offset + 2\n}\n\nBuffer.prototype.writeUint32LE =\nBuffer.prototype.writeUInt32LE = function writeUInt32LE (value, offset, noAssert) {\n  value = +value\n  offset = offset >>> 0\n  if (!noAssert) checkInt(this, value, offset, 4, 0xffffffff, 0)\n  this[offset + 3] = (value >>> 24)\n  this[offset + 2] = (value >>> 16)\n  this[offset + 1] = (value >>> 8)\n  this[offset] = (value & 0xff)\n  return offset + 4\n}\n\nBuffer.prototype.writeUint32BE =\nBuffer.prototype.writeUInt32BE = function writeUInt32BE (value, offset, noAssert) {\n  value = +value\n  offset = offset >>> 0\n  if (!noAssert) checkInt(this, value, offset, 4, 0xffffffff, 0)\n  this[offset] = (value >>> 24)\n  this[offset + 1] = (value >>> 16)\n  this[offset + 2] = (value >>> 8)\n  this[offset + 3] = (value & 0xff)\n  return offset + 4\n}\n\nfunction wrtBigUInt64LE (buf, value, offset, min, max) {\n  checkIntBI(value, min, max, buf, offset, 7)\n\n  let lo = Number(value & BigInt(0xffffffff))\n  buf[offset++] = lo\n  lo = lo >> 8\n  buf[offset++] = lo\n  lo = lo >> 8\n  buf[offset++] = lo\n  lo = lo >> 8\n  buf[offset++] = lo\n  let hi = Number(value >> BigInt(32) & BigInt(0xffffffff))\n  buf[offset++] = hi\n  hi = hi >> 8\n  buf[offset++] = hi\n  hi = hi >> 8\n  buf[offset++] = hi\n  hi = hi >> 8\n  buf[offset++] = hi\n  return offset\n}\n\nfunction wrtBigUInt64BE (buf, value, offset, min, max) {\n  checkIntBI(value, min, max, buf, offset, 7)\n\n  let lo = Number(value & BigInt(0xffffffff))\n  buf[offset + 7] = lo\n  lo = lo >> 8\n  buf[offset + 6] = lo\n  lo = lo >> 8\n  buf[offset + 5] = lo\n  lo = lo >> 8\n  buf[offset + 4] = lo\n  let hi = Number(value >> BigInt(32) & BigInt(0xffffffff))\n  buf[offset + 3] = hi\n  hi = hi >> 8\n  buf[offset + 2] = hi\n  hi = hi >> 8\n  buf[offset + 1] = hi\n  hi = hi >> 8\n  buf[offset] = hi\n  return offset + 8\n}\n\nBuffer.prototype.writeBigUInt64LE = defineBigIntMethod(function writeBigUInt64LE (value, offset = 0) {\n  return wrtBigUInt64LE(this, value, offset, BigInt(0), BigInt('0xffffffffffffffff'))\n})\n\nBuffer.prototype.writeBigUInt64BE = defineBigIntMethod(function writeBigUInt64BE (value, offset = 0) {\n  return wrtBigUInt64BE(this, value, offset, BigInt(0), BigInt('0xffffffffffffffff'))\n})\n\nBuffer.prototype.writeIntLE = function writeIntLE (value, offset, byteLength, noAssert) {\n  value = +value\n  offset = offset >>> 0\n  if (!noAssert) {\n    const limit = Math.pow(2, (8 * byteLength) - 1)\n\n    checkInt(this, value, offset, byteLength, limit - 1, -limit)\n  }\n\n  let i = 0\n  let mul = 1\n  let sub = 0\n  this[offset] = value & 0xFF\n  while (++i < byteLength && (mul *= 0x100)) {\n    if (value < 0 && sub === 0 && this[offset + i - 1] !== 0) {\n      sub = 1\n    }\n    this[offset + i] = ((value / mul) >> 0) - sub & 0xFF\n  }\n\n  return offset + byteLength\n}\n\nBuffer.prototype.writeIntBE = function writeIntBE (value, offset, byteLength, noAssert) {\n  value = +value\n  offset = offset >>> 0\n  if (!noAssert) {\n    const limit = Math.pow(2, (8 * byteLength) - 1)\n\n    checkInt(this, value, offset, byteLength, limit - 1, -limit)\n  }\n\n  let i = byteLength - 1\n  let mul = 1\n  let sub = 0\n  this[offset + i] = value & 0xFF\n  while (--i >= 0 && (mul *= 0x100)) {\n    if (value < 0 && sub === 0 && this[offset + i + 1] !== 0) {\n      sub = 1\n    }\n    this[offset + i] = ((value / mul) >> 0) - sub & 0xFF\n  }\n\n  return offset + byteLength\n}\n\nBuffer.prototype.writeInt8 = function writeInt8 (value, offset, noAssert) {\n  value = +value\n  offset = offset >>> 0\n  if (!noAssert) checkInt(this, value, offset, 1, 0x7f, -0x80)\n  if (value < 0) value = 0xff + value + 1\n  this[offset] = (value & 0xff)\n  return offset + 1\n}\n\nBuffer.prototype.writeInt16LE = function writeInt16LE (value, offset, noAssert) {\n  value = +value\n  offset = offset >>> 0\n  if (!noAssert) checkInt(this, value, offset, 2, 0x7fff, -0x8000)\n  this[offset] = (value & 0xff)\n  this[offset + 1] = (value >>> 8)\n  return offset + 2\n}\n\nBuffer.prototype.writeInt16BE = function writeInt16BE (value, offset, noAssert) {\n  value = +value\n  offset = offset >>> 0\n  if (!noAssert) checkInt(this, value, offset, 2, 0x7fff, -0x8000)\n  this[offset] = (value >>> 8)\n  this[offset + 1] = (value & 0xff)\n  return offset + 2\n}\n\nBuffer.prototype.writeInt32LE = function writeInt32LE (value, offset, noAssert) {\n  value = +value\n  offset = offset >>> 0\n  if (!noAssert) checkInt(this, value, offset, 4, 0x7fffffff, -0x80000000)\n  this[offset] = (value & 0xff)\n  this[offset + 1] = (value >>> 8)\n  this[offset + 2] = (value >>> 16)\n  this[offset + 3] = (value >>> 24)\n  return offset + 4\n}\n\nBuffer.prototype.writeInt32BE = function writeInt32BE (value, offset, noAssert) {\n  value = +value\n  offset = offset >>> 0\n  if (!noAssert) checkInt(this, value, offset, 4, 0x7fffffff, -0x80000000)\n  if (value < 0) value = 0xffffffff + value + 1\n  this[offset] = (value >>> 24)\n  this[offset + 1] = (value >>> 16)\n  this[offset + 2] = (value >>> 8)\n  this[offset + 3] = (value & 0xff)\n  return offset + 4\n}\n\nBuffer.prototype.writeBigInt64LE = defineBigIntMethod(function writeBigInt64LE (value, offset = 0) {\n  return wrtBigUInt64LE(this, value, offset, -BigInt('0x8000000000000000'), BigInt('0x7fffffffffffffff'))\n})\n\nBuffer.prototype.writeBigInt64BE = defineBigIntMethod(function writeBigInt64BE (value, offset = 0) {\n  return wrtBigUInt64BE(this, value, offset, -BigInt('0x8000000000000000'), BigInt('0x7fffffffffffffff'))\n})\n\nfunction checkIEEE754 (buf, value, offset, ext, max, min) {\n  if (offset + ext > buf.length) throw new RangeError('Index out of range')\n  if (offset < 0) throw new RangeError('Index out of range')\n}\n\nfunction writeFloat (buf, value, offset, littleEndian, noAssert) {\n  value = +value\n  offset = offset >>> 0\n  if (!noAssert) {\n    checkIEEE754(buf, value, offset, 4, 3.4028234663852886e+38, -3.4028234663852886e+38)\n  }\n  ieee754.write(buf, value, offset, littleEndian, 23, 4)\n  return offset + 4\n}\n\nBuffer.prototype.writeFloatLE = function writeFloatLE (value, offset, noAssert) {\n  return writeFloat(this, value, offset, true, noAssert)\n}\n\nBuffer.prototype.writeFloatBE = function writeFloatBE (value, offset, noAssert) {\n  return writeFloat(this, value, offset, false, noAssert)\n}\n\nfunction writeDouble (buf, value, offset, littleEndian, noAssert) {\n  value = +value\n  offset = offset >>> 0\n  if (!noAssert) {\n    checkIEEE754(buf, value, offset, 8, 1.7976931348623157E+308, -1.7976931348623157E+308)\n  }\n  ieee754.write(buf, value, offset, littleEndian, 52, 8)\n  return offset + 8\n}\n\nBuffer.prototype.writeDoubleLE = function writeDoubleLE (value, offset, noAssert) {\n  return writeDouble(this, value, offset, true, noAssert)\n}\n\nBuffer.prototype.writeDoubleBE = function writeDoubleBE (value, offset, noAssert) {\n  return writeDouble(this, value, offset, false, noAssert)\n}\n\n// copy(targetBuffer, targetStart=0, sourceStart=0, sourceEnd=buffer.length)\nBuffer.prototype.copy = function copy (target, targetStart, start, end) {\n  if (!Buffer.isBuffer(target)) throw new TypeError('argument should be a Buffer')\n  if (!start) start = 0\n  if (!end && end !== 0) end = this.length\n  if (targetStart >= target.length) targetStart = target.length\n  if (!targetStart) targetStart = 0\n  if (end > 0 && end < start) end = start\n\n  // Copy 0 bytes; we're done\n  if (end === start) return 0\n  if (target.length === 0 || this.length === 0) return 0\n\n  // Fatal error conditions\n  if (targetStart < 0) {\n    throw new RangeError('targetStart out of bounds')\n  }\n  if (start < 0 || start >= this.length) throw new RangeError('Index out of range')\n  if (end < 0) throw new RangeError('sourceEnd out of bounds')\n\n  // Are we oob?\n  if (end > this.length) end = this.length\n  if (target.length - targetStart < end - start) {\n    end = target.length - targetStart + start\n  }\n\n  const len = end - start\n\n  if (this === target && typeof Uint8Array.prototype.copyWithin === 'function') {\n    // Use built-in when available, missing from IE11\n    this.copyWithin(targetStart, start, end)\n  } else {\n    Uint8Array.prototype.set.call(\n      target,\n      this.subarray(start, end),\n      targetStart\n    )\n  }\n\n  return len\n}\n\n// Usage:\n//    buffer.fill(number[, offset[, end]])\n//    buffer.fill(buffer[, offset[, end]])\n//    buffer.fill(string[, offset[, end]][, encoding])\nBuffer.prototype.fill = function fill (val, start, end, encoding) {\n  // Handle string cases:\n  if (typeof val === 'string') {\n    if (typeof start === 'string') {\n      encoding = start\n      start = 0\n      end = this.length\n    } else if (typeof end === 'string') {\n      encoding = end\n      end = this.length\n    }\n    if (encoding !== undefined && typeof encoding !== 'string') {\n      throw new TypeError('encoding must be a string')\n    }\n    if (typeof encoding === 'string' && !Buffer.isEncoding(encoding)) {\n      throw new TypeError('Unknown encoding: ' + encoding)\n    }\n    if (val.length === 1) {\n      const code = val.charCodeAt(0)\n      if ((encoding === 'utf8' && code < 128) ||\n          encoding === 'latin1') {\n        // Fast path: If `val` fits into a single byte, use that numeric value.\n        val = code\n      }\n    }\n  } else if (typeof val === 'number') {\n    val = val & 255\n  } else if (typeof val === 'boolean') {\n    val = Number(val)\n  }\n\n  // Invalid ranges are not set to a default, so can range check early.\n  if (start < 0 || this.length < start || this.length < end) {\n    throw new RangeError('Out of range index')\n  }\n\n  if (end <= start) {\n    return this\n  }\n\n  start = start >>> 0\n  end = end === undefined ? this.length : end >>> 0\n\n  if (!val) val = 0\n\n  let i\n  if (typeof val === 'number') {\n    for (i = start; i < end; ++i) {\n      this[i] = val\n    }\n  } else {\n    const bytes = Buffer.isBuffer(val)\n      ? val\n      : Buffer.from(val, encoding)\n    const len = bytes.length\n    if (len === 0) {\n      throw new TypeError('The value \"' + val +\n        '\" is invalid for argument \"value\"')\n    }\n    for (i = 0; i < end - start; ++i) {\n      this[i + start] = bytes[i % len]\n    }\n  }\n\n  return this\n}\n\n// CUSTOM ERRORS\n// =============\n\n// Simplified versions from Node, changed for Buffer-only usage\nconst errors = {}\nfunction E (sym, getMessage, Base) {\n  errors[sym] = class NodeError extends Base {\n    constructor () {\n      super()\n\n      Object.defineProperty(this, 'message', {\n        value: getMessage.apply(this, arguments),\n        writable: true,\n        configurable: true\n      })\n\n      // Add the error code to the name to include it in the stack trace.\n      this.name = `${this.name} [${sym}]`\n      // Access the stack to generate the error message including the error code\n      // from the name.\n      this.stack // eslint-disable-line no-unused-expressions\n      // Reset the name to the actual name.\n      delete this.name\n    }\n\n    get code () {\n      return sym\n    }\n\n    set code (value) {\n      Object.defineProperty(this, 'code', {\n        configurable: true,\n        enumerable: true,\n        value,\n        writable: true\n      })\n    }\n\n    toString () {\n      return `${this.name} [${sym}]: ${this.message}`\n    }\n  }\n}\n\nE('ERR_BUFFER_OUT_OF_BOUNDS',\n  function (name) {\n    if (name) {\n      return `${name} is outside of buffer bounds`\n    }\n\n    return 'Attempt to access memory outside buffer bounds'\n  }, RangeError)\nE('ERR_INVALID_ARG_TYPE',\n  function (name, actual) {\n    return `The \"${name}\" argument must be of type number. Received type ${typeof actual}`\n  }, TypeError)\nE('ERR_OUT_OF_RANGE',\n  function (str, range, input) {\n    let msg = `The value of \"${str}\" is out of range.`\n    let received = input\n    if (Number.isInteger(input) && Math.abs(input) > 2 ** 32) {\n      received = addNumericalSeparator(String(input))\n    } else if (typeof input === 'bigint') {\n      received = String(input)\n      if (input > BigInt(2) ** BigInt(32) || input < -(BigInt(2) ** BigInt(32))) {\n        received = addNumericalSeparator(received)\n      }\n      received += 'n'\n    }\n    msg += ` It must be ${range}. Received ${received}`\n    return msg\n  }, RangeError)\n\nfunction addNumericalSeparator (val) {\n  let res = ''\n  let i = val.length\n  const start = val[0] === '-' ? 1 : 0\n  for (; i >= start + 4; i -= 3) {\n    res = `_${val.slice(i - 3, i)}${res}`\n  }\n  return `${val.slice(0, i)}${res}`\n}\n\n// CHECK FUNCTIONS\n// ===============\n\nfunction checkBounds (buf, offset, byteLength) {\n  validateNumber(offset, 'offset')\n  if (buf[offset] === undefined || buf[offset + byteLength] === undefined) {\n    boundsError(offset, buf.length - (byteLength + 1))\n  }\n}\n\nfunction checkIntBI (value, min, max, buf, offset, byteLength) {\n  if (value > max || value < min) {\n    const n = typeof min === 'bigint' ? 'n' : ''\n    let range\n    if (byteLength > 3) {\n      if (min === 0 || min === BigInt(0)) {\n        range = `>= 0${n} and < 2${n} ** ${(byteLength + 1) * 8}${n}`\n      } else {\n        range = `>= -(2${n} ** ${(byteLength + 1) * 8 - 1}${n}) and < 2 ** ` +\n                `${(byteLength + 1) * 8 - 1}${n}`\n      }\n    } else {\n      range = `>= ${min}${n} and <= ${max}${n}`\n    }\n    throw new errors.ERR_OUT_OF_RANGE('value', range, value)\n  }\n  checkBounds(buf, offset, byteLength)\n}\n\nfunction validateNumber (value, name) {\n  if (typeof value !== 'number') {\n    throw new errors.ERR_INVALID_ARG_TYPE(name, 'number', value)\n  }\n}\n\nfunction boundsError (value, length, type) {\n  if (Math.floor(value) !== value) {\n    validateNumber(value, type)\n    throw new errors.ERR_OUT_OF_RANGE(type || 'offset', 'an integer', value)\n  }\n\n  if (length < 0) {\n    throw new errors.ERR_BUFFER_OUT_OF_BOUNDS()\n  }\n\n  throw new errors.ERR_OUT_OF_RANGE(type || 'offset',\n                                    `>= ${type ? 1 : 0} and <= ${length}`,\n                                    value)\n}\n\n// HELPER FUNCTIONS\n// ================\n\nconst INVALID_BASE64_RE = /[^+/0-9A-Za-z-_]/g\n\nfunction base64clean (str) {\n  // Node takes equal signs as end of the Base64 encoding\n  str = str.split('=')[0]\n  // Node strips out invalid characters like \\n and \\t from the string, base64-js does not\n  str = str.trim().replace(INVALID_BASE64_RE, '')\n  // Node converts strings with length < 2 to ''\n  if (str.length < 2) return ''\n  // Node allows for non-padded base64 strings (missing trailing ===), base64-js does not\n  while (str.length % 4 !== 0) {\n    str = str + '='\n  }\n  return str\n}\n\nfunction utf8ToBytes (string, units) {\n  units = units || Infinity\n  let codePoint\n  const length = string.length\n  let leadSurrogate = null\n  const bytes = []\n\n  for (let i = 0; i < length; ++i) {\n    codePoint = string.charCodeAt(i)\n\n    // is surrogate component\n    if (codePoint > 0xD7FF && codePoint < 0xE000) {\n      // last char was a lead\n      if (!leadSurrogate) {\n        // no lead yet\n        if (codePoint > 0xDBFF) {\n          // unexpected trail\n          if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)\n          continue\n        } else if (i + 1 === length) {\n          // unpaired lead\n          if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)\n          continue\n        }\n\n        // valid lead\n        leadSurrogate = codePoint\n\n        continue\n      }\n\n      // 2 leads in a row\n      if (codePoint < 0xDC00) {\n        if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)\n        leadSurrogate = codePoint\n        continue\n      }\n\n      // valid surrogate pair\n      codePoint = (leadSurrogate - 0xD800 << 10 | codePoint - 0xDC00) + 0x10000\n    } else if (leadSurrogate) {\n      // valid bmp char, but last char was a lead\n      if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)\n    }\n\n    leadSurrogate = null\n\n    // encode utf8\n    if (codePoint < 0x80) {\n      if ((units -= 1) < 0) break\n      bytes.push(codePoint)\n    } else if (codePoint < 0x800) {\n      if ((units -= 2) < 0) break\n      bytes.push(\n        codePoint >> 0x6 | 0xC0,\n        codePoint & 0x3F | 0x80\n      )\n    } else if (codePoint < 0x10000) {\n      if ((units -= 3) < 0) break\n      bytes.push(\n        codePoint >> 0xC | 0xE0,\n        codePoint >> 0x6 & 0x3F | 0x80,\n        codePoint & 0x3F | 0x80\n      )\n    } else if (codePoint < 0x110000) {\n      if ((units -= 4) < 0) break\n      bytes.push(\n        codePoint >> 0x12 | 0xF0,\n        codePoint >> 0xC & 0x3F | 0x80,\n        codePoint >> 0x6 & 0x3F | 0x80,\n        codePoint & 0x3F | 0x80\n      )\n    } else {\n      throw new Error('Invalid code point')\n    }\n  }\n\n  return bytes\n}\n\nfunction asciiToBytes (str) {\n  const byteArray = []\n  for (let i = 0; i < str.length; ++i) {\n    // Node's code seems to be doing this and not & 0x7F..\n    byteArray.push(str.charCodeAt(i) & 0xFF)\n  }\n  return byteArray\n}\n\nfunction utf16leToBytes (str, units) {\n  let c, hi, lo\n  const byteArray = []\n  for (let i = 0; i < str.length; ++i) {\n    if ((units -= 2) < 0) break\n\n    c = str.charCodeAt(i)\n    hi = c >> 8\n    lo = c % 256\n    byteArray.push(lo)\n    byteArray.push(hi)\n  }\n\n  return byteArray\n}\n\nfunction base64ToBytes (str) {\n  return base64.toByteArray(base64clean(str))\n}\n\nfunction blitBuffer (src, dst, offset, length) {\n  let i\n  for (i = 0; i < length; ++i) {\n    if ((i + offset >= dst.length) || (i >= src.length)) break\n    dst[i + offset] = src[i]\n  }\n  return i\n}\n\n// ArrayBuffer or Uint8Array objects from other contexts (i.e. iframes) do not pass\n// the `instanceof` check but they should be treated as of that type.\n// See: https://github.com/feross/buffer/issues/166\nfunction isInstance (obj, type) {\n  return obj instanceof type ||\n    (obj != null && obj.constructor != null && obj.constructor.name != null &&\n      obj.constructor.name === type.name)\n}\nfunction numberIsNaN (obj) {\n  // For IE11 support\n  return obj !== obj // eslint-disable-line no-self-compare\n}\n\n// Create lookup table for `toString('hex')`\n// See: https://github.com/feross/buffer/issues/219\nconst hexSliceLookupTable = (function () {\n  const alphabet = '0123456789abcdef'\n  const table = new Array(256)\n  for (let i = 0; i < 16; ++i) {\n    const i16 = i * 16\n    for (let j = 0; j < 16; ++j) {\n      table[i16 + j] = alphabet[i] + alphabet[j]\n    }\n  }\n  return table\n})()\n\n// Return not function with Error if BigInt not supported\nfunction defineBigIntMethod (fn) {\n  return typeof BigInt === 'undefined' ? BufferBigIntNotDefined : fn\n}\n\nfunction BufferBigIntNotDefined () {\n  throw new Error('BigInt not supported')\n}\n","/* replacement start */\n\nconst process = require('process/')\n\n/* replacement end */\n// Ported from https://github.com/mafintosh/end-of-stream with\n// permission from the author, Mathias Buus (@mafintosh).\n\n;('use strict')\nconst { AbortError, codes } = require('../../ours/errors')\nconst { ERR_INVALID_ARG_TYPE, ERR_STREAM_PREMATURE_CLOSE } = codes\nconst { kEmptyObject, once } = require('../../ours/util')\nconst { validateAbortSignal, validateFunction, validateObject, validateBoolean } = require('../validators')\nconst { Promise, PromisePrototypeThen, SymbolDispose } = require('../../ours/primordials')\nconst {\n  isClosed,\n  isReadable,\n  isReadableNodeStream,\n  isReadableStream,\n  isReadableFinished,\n  isReadableErrored,\n  isWritable,\n  isWritableNodeStream,\n  isWritableStream,\n  isWritableFinished,\n  isWritableErrored,\n  isNodeStream,\n  willEmitClose: _willEmitClose,\n  kIsClosedPromise\n} = require('./utils')\nlet addAbortListener\nfunction isRequest(stream) {\n  return stream.setHeader && typeof stream.abort === 'function'\n}\nconst nop = () => {}\nfunction eos(stream, options, callback) {\n  var _options$readable, _options$writable\n  if (arguments.length === 2) {\n    callback = options\n    options = kEmptyObject\n  } else if (options == null) {\n    options = kEmptyObject\n  } else {\n    validateObject(options, 'options')\n  }\n  validateFunction(callback, 'callback')\n  validateAbortSignal(options.signal, 'options.signal')\n  callback = once(callback)\n  if (isReadableStream(stream) || isWritableStream(stream)) {\n    return eosWeb(stream, options, callback)\n  }\n  if (!isNodeStream(stream)) {\n    throw new ERR_INVALID_ARG_TYPE('stream', ['ReadableStream', 'WritableStream', 'Stream'], stream)\n  }\n  const readable =\n    (_options$readable = options.readable) !== null && _options$readable !== undefined\n      ? _options$readable\n      : isReadableNodeStream(stream)\n  const writable =\n    (_options$writable = options.writable) !== null && _options$writable !== undefined\n      ? _options$writable\n      : isWritableNodeStream(stream)\n  const wState = stream._writableState\n  const rState = stream._readableState\n  const onlegacyfinish = () => {\n    if (!stream.writable) {\n      onfinish()\n    }\n  }\n\n  // TODO (ronag): Improve soft detection to include core modules and\n  // common ecosystem modules that do properly emit 'close' but fail\n  // this generic check.\n  let willEmitClose =\n    _willEmitClose(stream) && isReadableNodeStream(stream) === readable && isWritableNodeStream(stream) === writable\n  let writableFinished = isWritableFinished(stream, false)\n  const onfinish = () => {\n    writableFinished = true\n    // Stream should not be destroyed here. If it is that\n    // means that user space is doing something differently and\n    // we cannot trust willEmitClose.\n    if (stream.destroyed) {\n      willEmitClose = false\n    }\n    if (willEmitClose && (!stream.readable || readable)) {\n      return\n    }\n    if (!readable || readableFinished) {\n      callback.call(stream)\n    }\n  }\n  let readableFinished = isReadableFinished(stream, false)\n  const onend = () => {\n    readableFinished = true\n    // Stream should not be destroyed here. If it is that\n    // means that user space is doing something differently and\n    // we cannot trust willEmitClose.\n    if (stream.destroyed) {\n      willEmitClose = false\n    }\n    if (willEmitClose && (!stream.writable || writable)) {\n      return\n    }\n    if (!writable || writableFinished) {\n      callback.call(stream)\n    }\n  }\n  const onerror = (err) => {\n    callback.call(stream, err)\n  }\n  let closed = isClosed(stream)\n  const onclose = () => {\n    closed = true\n    const errored = isWritableErrored(stream) || isReadableErrored(stream)\n    if (errored && typeof errored !== 'boolean') {\n      return callback.call(stream, errored)\n    }\n    if (readable && !readableFinished && isReadableNodeStream(stream, true)) {\n      if (!isReadableFinished(stream, false)) return callback.call(stream, new ERR_STREAM_PREMATURE_CLOSE())\n    }\n    if (writable && !writableFinished) {\n      if (!isWritableFinished(stream, false)) return callback.call(stream, new ERR_STREAM_PREMATURE_CLOSE())\n    }\n    callback.call(stream)\n  }\n  const onclosed = () => {\n    closed = true\n    const errored = isWritableErrored(stream) || isReadableErrored(stream)\n    if (errored && typeof errored !== 'boolean') {\n      return callback.call(stream, errored)\n    }\n    callback.call(stream)\n  }\n  const onrequest = () => {\n    stream.req.on('finish', onfinish)\n  }\n  if (isRequest(stream)) {\n    stream.on('complete', onfinish)\n    if (!willEmitClose) {\n      stream.on('abort', onclose)\n    }\n    if (stream.req) {\n      onrequest()\n    } else {\n      stream.on('request', onrequest)\n    }\n  } else if (writable && !wState) {\n    // legacy streams\n    stream.on('end', onlegacyfinish)\n    stream.on('close', onlegacyfinish)\n  }\n\n  // Not all streams will emit 'close' after 'aborted'.\n  if (!willEmitClose && typeof stream.aborted === 'boolean') {\n    stream.on('aborted', onclose)\n  }\n  stream.on('end', onend)\n  stream.on('finish', onfinish)\n  if (options.error !== false) {\n    stream.on('error', onerror)\n  }\n  stream.on('close', onclose)\n  if (closed) {\n    process.nextTick(onclose)\n  } else if (\n    (wState !== null && wState !== undefined && wState.errorEmitted) ||\n    (rState !== null && rState !== undefined && rState.errorEmitted)\n  ) {\n    if (!willEmitClose) {\n      process.nextTick(onclosed)\n    }\n  } else if (\n    !readable &&\n    (!willEmitClose || isReadable(stream)) &&\n    (writableFinished || isWritable(stream) === false)\n  ) {\n    process.nextTick(onclosed)\n  } else if (\n    !writable &&\n    (!willEmitClose || isWritable(stream)) &&\n    (readableFinished || isReadable(stream) === false)\n  ) {\n    process.nextTick(onclosed)\n  } else if (rState && stream.req && stream.aborted) {\n    process.nextTick(onclosed)\n  }\n  const cleanup = () => {\n    callback = nop\n    stream.removeListener('aborted', onclose)\n    stream.removeListener('complete', onfinish)\n    stream.removeListener('abort', onclose)\n    stream.removeListener('request', onrequest)\n    if (stream.req) stream.req.removeListener('finish', onfinish)\n    stream.removeListener('end', onlegacyfinish)\n    stream.removeListener('close', onlegacyfinish)\n    stream.removeListener('finish', onfinish)\n    stream.removeListener('end', onend)\n    stream.removeListener('error', onerror)\n    stream.removeListener('close', onclose)\n  }\n  if (options.signal && !closed) {\n    const abort = () => {\n      // Keep it because cleanup removes it.\n      const endCallback = callback\n      cleanup()\n      endCallback.call(\n        stream,\n        new AbortError(undefined, {\n          cause: options.signal.reason\n        })\n      )\n    }\n    if (options.signal.aborted) {\n      process.nextTick(abort)\n    } else {\n      addAbortListener = addAbortListener || require('../../ours/util').addAbortListener\n      const disposable = addAbortListener(options.signal, abort)\n      const originalCallback = callback\n      callback = once((...args) => {\n        disposable[SymbolDispose]()\n        originalCallback.apply(stream, args)\n      })\n    }\n  }\n  return cleanup\n}\nfunction eosWeb(stream, options, callback) {\n  let isAborted = false\n  let abort = nop\n  if (options.signal) {\n    abort = () => {\n      isAborted = true\n      callback.call(\n        stream,\n        new AbortError(undefined, {\n          cause: options.signal.reason\n        })\n      )\n    }\n    if (options.signal.aborted) {\n      process.nextTick(abort)\n    } else {\n      addAbortListener = addAbortListener || require('../../ours/util').addAbortListener\n      const disposable = addAbortListener(options.signal, abort)\n      const originalCallback = callback\n      callback = once((...args) => {\n        disposable[SymbolDispose]()\n        originalCallback.apply(stream, args)\n      })\n    }\n  }\n  const resolverFn = (...args) => {\n    if (!isAborted) {\n      process.nextTick(() => callback.apply(stream, args))\n    }\n  }\n  PromisePrototypeThen(stream[kIsClosedPromise].promise, resolverFn, resolverFn)\n  return nop\n}\nfunction finished(stream, opts) {\n  var _opts\n  let autoCleanup = false\n  if (opts === null) {\n    opts = kEmptyObject\n  }\n  if ((_opts = opts) !== null && _opts !== undefined && _opts.cleanup) {\n    validateBoolean(opts.cleanup, 'cleanup')\n    autoCleanup = opts.cleanup\n  }\n  return new Promise((resolve, reject) => {\n    const cleanup = eos(stream, opts, (err) => {\n      if (autoCleanup) {\n        cleanup()\n      }\n      if (err) {\n        reject(err)\n      } else {\n        resolve()\n      }\n    })\n  })\n}\nmodule.exports = eos\nmodule.exports.finished = finished\n","exports.read = function (buffer, offset, isLE, mLen, nBytes) {\n  var e, m\n  var eLen = (nBytes * 8) - mLen - 1\n  var eMax = (1 << eLen) - 1\n  var eBias = eMax >> 1\n  var nBits = -7\n  var i = isLE ? (nBytes - 1) : 0\n  var d = isLE ? -1 : 1\n  var s = buffer[offset + i]\n\n  i += d\n\n  e = s & ((1 << (-nBits)) - 1)\n  s >>= (-nBits)\n  nBits += eLen\n  for (; nBits > 0; e = (e * 256) + buffer[offset + i], i += d, nBits -= 8) {}\n\n  m = e & ((1 << (-nBits)) - 1)\n  e >>= (-nBits)\n  nBits += mLen\n  for (; nBits > 0; m = (m * 256) + buffer[offset + i], i += d, nBits -= 8) {}\n\n  if (e === 0) {\n    e = 1 - eBias\n  } else if (e === eMax) {\n    return m ? NaN : ((s ? -1 : 1) * Infinity)\n  } else {\n    m = m + Math.pow(2, mLen)\n    e = e - eBias\n  }\n  return (s ? -1 : 1) * m * Math.pow(2, e - mLen)\n}\n\nexports.write = function (buffer, value, offset, isLE, mLen, nBytes) {\n  var e, m, c\n  var eLen = (nBytes * 8) - mLen - 1\n  var eMax = (1 << eLen) - 1\n  var eBias = eMax >> 1\n  var rt = (mLen === 23 ? Math.pow(2, -24) - Math.pow(2, -77) : 0)\n  var i = isLE ? 0 : (nBytes - 1)\n  var d = isLE ? 1 : -1\n  var s = value < 0 || (value === 0 && 1 / value < 0) ? 1 : 0\n\n  value = Math.abs(value)\n\n  if (isNaN(value) || value === Infinity) {\n    m = isNaN(value) ? 1 : 0\n    e = eMax\n  } else {\n    e = Math.floor(Math.log(value) / Math.LN2)\n    if (value * (c = Math.pow(2, -e)) < 1) {\n      e--\n      c *= 2\n    }\n    if (e + eBias >= 1) {\n      value += rt / c\n    } else {\n      value += rt * Math.pow(2, 1 - eBias)\n    }\n    if (value * c >= 2) {\n      e++\n      c /= 2\n    }\n\n    if (e + eBias >= eMax) {\n      m = 0\n      e = eMax\n    } else if (e + eBias >= 1) {\n      m = ((value * c) - 1) * Math.pow(2, mLen)\n      e = e + eBias\n    } else {\n      m = value * Math.pow(2, eBias - 1) * Math.pow(2, mLen)\n      e = 0\n    }\n  }\n\n  for (; mLen >= 8; buffer[offset + i] = m & 0xff, i += d, m /= 256, mLen -= 8) {}\n\n  e = (e << mLen) | m\n  eLen += mLen\n  for (; eLen > 0; buffer[offset + i] = e & 0xff, i += d, e /= 256, eLen -= 8) {}\n\n  buffer[offset + i - d] |= s * 128\n}\n","/*globals self, window */\n\"use strict\"\n\n/*eslint-disable @mysticatea/prettier */\nconst { AbortController, AbortSignal } =\n    typeof self !== \"undefined\" ? self :\n    typeof window !== \"undefined\" ? window :\n    /* otherwise */ undefined\n/*eslint-enable @mysticatea/prettier */\n\nmodule.exports = AbortController\nmodule.exports.AbortSignal = AbortSignal\nmodule.exports.default = AbortController\n","'use strict'\n\nconst { SymbolDispose } = require('../../ours/primordials')\nconst { AbortError, codes } = require('../../ours/errors')\nconst { isNodeStream, isWebStream, kControllerErrorFunction } = require('./utils')\nconst eos = require('./end-of-stream')\nconst { ERR_INVALID_ARG_TYPE } = codes\nlet addAbortListener\n\n// This method is inlined here for readable-stream\n// It also does not allow for signal to not exist on the stream\n// https://github.com/nodejs/node/pull/36061#discussion_r533718029\nconst validateAbortSignal = (signal, name) => {\n  if (typeof signal !== 'object' || !('aborted' in signal)) {\n    throw new ERR_INVALID_ARG_TYPE(name, 'AbortSignal', signal)\n  }\n}\nmodule.exports.addAbortSignal = function addAbortSignal(signal, stream) {\n  validateAbortSignal(signal, 'signal')\n  if (!isNodeStream(stream) && !isWebStream(stream)) {\n    throw new ERR_INVALID_ARG_TYPE('stream', ['ReadableStream', 'WritableStream', 'Stream'], stream)\n  }\n  return module.exports.addAbortSignalNoValidate(signal, stream)\n}\nmodule.exports.addAbortSignalNoValidate = function (signal, stream) {\n  if (typeof signal !== 'object' || !('aborted' in signal)) {\n    return stream\n  }\n  const onAbort = isNodeStream(stream)\n    ? () => {\n        stream.destroy(\n          new AbortError(undefined, {\n            cause: signal.reason\n          })\n        )\n      }\n    : () => {\n        stream[kControllerErrorFunction](\n          new AbortError(undefined, {\n            cause: signal.reason\n          })\n        )\n      }\n  if (signal.aborted) {\n    onAbort()\n  } else {\n    addAbortListener = addAbortListener || require('../../ours/util').addAbortListener\n    const disposable = addAbortListener(signal, onAbort)\n    eos(stream, disposable[SymbolDispose])\n  }\n  return stream\n}\n","// Copyright Joyent, Inc. and other Node contributors.\n//\n// Permission is hereby granted, free of charge, to any person obtaining a\n// copy of this software and associated documentation files (the\n// \"Software\"), to deal in the Software without restriction, including\n// without limitation the rights to use, copy, modify, merge, publish,\n// distribute, sublicense, and/or sell copies of the Software, and to permit\n// persons to whom the Software is furnished to do so, subject to the\n// following conditions:\n//\n// The above copyright notice and this permission notice shall be included\n// in all copies or substantial portions of the Software.\n//\n// THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS\n// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF\n// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN\n// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,\n// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR\n// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE\n// USE OR OTHER DEALINGS IN THE SOFTWARE.\n\n// a duplex stream is just a stream that is both readable and writable.\n// Since JS doesn't have multiple prototype inheritance, this class\n// prototypically inherits from Readable, and then parasitically from\n// Writable.\n\n'use strict'\n\nconst {\n  ObjectDefineProperties,\n  ObjectGetOwnPropertyDescriptor,\n  ObjectKeys,\n  ObjectSetPrototypeOf\n} = require('../../ours/primordials')\nmodule.exports = Duplex\nconst Readable = require('./readable')\nconst Writable = require('./writable')\nObjectSetPrototypeOf(Duplex.prototype, Readable.prototype)\nObjectSetPrototypeOf(Duplex, Readable)\n{\n  const keys = ObjectKeys(Writable.prototype)\n  // Allow the keys array to be GC'ed.\n  for (let i = 0; i < keys.length; i++) {\n    const method = keys[i]\n    if (!Duplex.prototype[method]) Duplex.prototype[method] = Writable.prototype[method]\n  }\n}\nfunction Duplex(options) {\n  if (!(this instanceof Duplex)) return new Duplex(options)\n  Readable.call(this, options)\n  Writable.call(this, options)\n  if (options) {\n    this.allowHalfOpen = options.allowHalfOpen !== false\n    if (options.readable === false) {\n      this._readableState.readable = false\n      this._readableState.ended = true\n      this._readableState.endEmitted = true\n    }\n    if (options.writable === false) {\n      this._writableState.writable = false\n      this._writableState.ending = true\n      this._writableState.ended = true\n      this._writableState.finished = true\n    }\n  } else {\n    this.allowHalfOpen = true\n  }\n}\nObjectDefineProperties(Duplex.prototype, {\n  writable: {\n    __proto__: null,\n    ...ObjectGetOwnPropertyDescriptor(Writable.prototype, 'writable')\n  },\n  writableHighWaterMark: {\n    __proto__: null,\n    ...ObjectGetOwnPropertyDescriptor(Writable.prototype, 'writableHighWaterMark')\n  },\n  writableObjectMode: {\n    __proto__: null,\n    ...ObjectGetOwnPropertyDescriptor(Writable.prototype, 'writableObjectMode')\n  },\n  writableBuffer: {\n    __proto__: null,\n    ...ObjectGetOwnPropertyDescriptor(Writable.prototype, 'writableBuffer')\n  },\n  writableLength: {\n    __proto__: null,\n    ...ObjectGetOwnPropertyDescriptor(Writable.prototype, 'writableLength')\n  },\n  writableFinished: {\n    __proto__: null,\n    ...ObjectGetOwnPropertyDescriptor(Writable.prototype, 'writableFinished')\n  },\n  writableCorked: {\n    __proto__: null,\n    ...ObjectGetOwnPropertyDescriptor(Writable.prototype, 'writableCorked')\n  },\n  writableEnded: {\n    __proto__: null,\n    ...ObjectGetOwnPropertyDescriptor(Writable.prototype, 'writableEnded')\n  },\n  writableNeedDrain: {\n    __proto__: null,\n    ...ObjectGetOwnPropertyDescriptor(Writable.prototype, 'writableNeedDrain')\n  },\n  destroyed: {\n    __proto__: null,\n    get() {\n      if (this._readableState === undefined || this._writableState === undefined) {\n        return false\n      }\n      return this._readableState.destroyed && this._writableState.destroyed\n    },\n    set(value) {\n      // Backward compatibility, the user is explicitly\n      // managing destroyed.\n      if (this._readableState && this._writableState) {\n        this._readableState.destroyed = value\n        this._writableState.destroyed = value\n      }\n    }\n  }\n})\nlet webStreamsAdapters\n\n// Lazy to avoid circular references\nfunction lazyWebStreams() {\n  if (webStreamsAdapters === undefined) webStreamsAdapters = {}\n  return webStreamsAdapters\n}\nDuplex.fromWeb = function (pair, options) {\n  return lazyWebStreams().newStreamDuplexFromReadableWritablePair(pair, options)\n}\nDuplex.toWeb = function (duplex) {\n  return lazyWebStreams().newReadableWritablePairFromDuplex(duplex)\n}\nlet duplexify\nDuplex.from = function (body) {\n  if (!duplexify) {\n    duplexify = require('./duplexify')\n  }\n  return duplexify(body, 'body')\n}\n","/**\n* @license Angular v9.1.0-next.4+61.sha-e552591.with-local-changes\n* (c) 2010-2020 Google LLC. https://angular.io/\n* License: MIT\n*/\n(function (factory) {\n    typeof define === 'function' && define.amd ? define(factory) :\n    factory();\n}((function () { 'use strict';\n\n    /**\n     * @license\n     * Copyright Google Inc. All Rights Reserved.\n     *\n     * Use of this source code is governed by an MIT-style license that can be\n     * found in the LICENSE file at https://angular.io/license\n     */\n    const Zone$1 = (function (global) {\n        const performance = global['performance'];\n        function mark(name) { performance && performance['mark'] && performance['mark'](name); }\n        function performanceMeasure(name, label) {\n            performance && performance['measure'] && performance['measure'](name, label);\n        }\n        mark('Zone');\n        // Initialize before it's accessed below.\n        // __Zone_symbol_prefix global can be used to override the default zone\n        // symbol prefix with a custom one if needed.\n        const symbolPrefix = global['__Zone_symbol_prefix'] || '__zone_symbol__';\n        function __symbol__(name) { return symbolPrefix + name; }\n        const checkDuplicate = global[__symbol__('forceDuplicateZoneCheck')] === true;\n        if (global['Zone']) {\n            // if global['Zone'] already exists (maybe zone.js was already loaded or\n            // some other lib also registered a global object named Zone), we may need\n            // to throw an error, but sometimes user may not want this error.\n            // For example,\n            // we have two web pages, page1 includes zone.js, page2 doesn't.\n            // and the 1st time user load page1 and page2, everything work fine,\n            // but when user load page2 again, error occurs because global['Zone'] already exists.\n            // so we add a flag to let user choose whether to throw this error or not.\n            // By default, if existing Zone is from zone.js, we will not throw the error.\n            if (checkDuplicate || typeof global['Zone'].__symbol__ !== 'function') {\n                throw new Error('Zone already loaded.');\n            }\n            else {\n                return global['Zone'];\n            }\n        }\n        class Zone {\n            constructor(parent, zoneSpec) {\n                this._parent = parent;\n                this._name = zoneSpec ? zoneSpec.name || 'unnamed' : '<root>';\n                this._properties = zoneSpec && zoneSpec.properties || {};\n                this._zoneDelegate =\n                    new ZoneDelegate(this, this._parent && this._parent._zoneDelegate, zoneSpec);\n            }\n            static assertZonePatched() {\n                if (global['Promise'] !== patches['ZoneAwarePromise']) {\n                    throw new Error('Zone.js has detected that ZoneAwarePromise `(window|global).Promise` ' +\n                        'has been overwritten.\\n' +\n                        'Most likely cause is that a Promise polyfill has been loaded ' +\n                        'after Zone.js (Polyfilling Promise api is not necessary when zone.js is loaded. ' +\n                        'If you must load one, do so before loading zone.js.)');\n                }\n            }\n            static get root() {\n                let zone = Zone.current;\n                while (zone.parent) {\n                    zone = zone.parent;\n                }\n                return zone;\n            }\n            static get current() { return _currentZoneFrame.zone; }\n            static get currentTask() { return _currentTask; }\n            // tslint:disable-next-line:require-internal-with-underscore\n            static __load_patch(name, fn) {\n                if (patches.hasOwnProperty(name)) {\n                    if (checkDuplicate) {\n                        throw Error('Already loaded patch: ' + name);\n                    }\n                }\n                else if (!global['__Zone_disable_' + name]) {\n                    const perfName = 'Zone:' + name;\n                    mark(perfName);\n                    patches[name] = fn(global, Zone, _api);\n                    performanceMeasure(perfName, perfName);\n                }\n            }\n            get parent() { return this._parent; }\n            get name() { return this._name; }\n            get(key) {\n                const zone = this.getZoneWith(key);\n                if (zone)\n                    return zone._properties[key];\n            }\n            getZoneWith(key) {\n                let current = this;\n                while (current) {\n                    if (current._properties.hasOwnProperty(key)) {\n                        return current;\n                    }\n                    current = current._parent;\n                }\n                return null;\n            }\n            fork(zoneSpec) {\n                if (!zoneSpec)\n                    throw new Error('ZoneSpec required!');\n                return this._zoneDelegate.fork(this, zoneSpec);\n            }\n            wrap(callback, source) {\n                if (typeof callback !== 'function') {\n                    throw new Error('Expecting function got: ' + callback);\n                }\n                const _callback = this._zoneDelegate.intercept(this, callback, source);\n                const zone = this;\n                return function () {\n                    return zone.runGuarded(_callback, this, arguments, source);\n                };\n            }\n            run(callback, applyThis, applyArgs, source) {\n                _currentZoneFrame = { parent: _currentZoneFrame, zone: this };\n                try {\n                    return this._zoneDelegate.invoke(this, callback, applyThis, applyArgs, source);\n                }\n                finally {\n                    _currentZoneFrame = _currentZoneFrame.parent;\n                }\n            }\n            runGuarded(callback, applyThis = null, applyArgs, source) {\n                _currentZoneFrame = { parent: _currentZoneFrame, zone: this };\n                try {\n                    try {\n                        return this._zoneDelegate.invoke(this, callback, applyThis, applyArgs, source);\n                    }\n                    catch (error) {\n                        if (this._zoneDelegate.handleError(this, error)) {\n                            throw error;\n                        }\n                    }\n                }\n                finally {\n                    _currentZoneFrame = _currentZoneFrame.parent;\n                }\n            }\n            runTask(task, applyThis, applyArgs) {\n                if (task.zone != this) {\n                    throw new Error('A task can only be run in the zone of creation! (Creation: ' +\n                        (task.zone || NO_ZONE).name + '; Execution: ' + this.name + ')');\n                }\n                // https://github.com/angular/zone.js/issues/778, sometimes eventTask\n                // will run in notScheduled(canceled) state, we should not try to\n                // run such kind of task but just return\n                if (task.state === notScheduled && (task.type === eventTask || task.type === macroTask)) {\n                    return;\n                }\n                const reEntryGuard = task.state != running;\n                reEntryGuard && task._transitionTo(running, scheduled);\n                task.runCount++;\n                const previousTask = _currentTask;\n                _currentTask = task;\n                _currentZoneFrame = { parent: _currentZoneFrame, zone: this };\n                try {\n                    if (task.type == macroTask && task.data && !task.data.isPeriodic) {\n                        task.cancelFn = undefined;\n                    }\n                    try {\n                        return this._zoneDelegate.invokeTask(this, task, applyThis, applyArgs);\n                    }\n                    catch (error) {\n                        if (this._zoneDelegate.handleError(this, error)) {\n                            throw error;\n                        }\n                    }\n                }\n                finally {\n                    // if the task's state is notScheduled or unknown, then it has already been cancelled\n                    // we should not reset the state to scheduled\n                    if (task.state !== notScheduled && task.state !== unknown) {\n                        if (task.type == eventTask || (task.data && task.data.isPeriodic)) {\n                            reEntryGuard && task._transitionTo(scheduled, running);\n                        }\n                        else {\n                            task.runCount = 0;\n                            this._updateTaskCount(task, -1);\n                            reEntryGuard &&\n                                task._transitionTo(notScheduled, running, notScheduled);\n                        }\n                    }\n                    _currentZoneFrame = _currentZoneFrame.parent;\n                    _currentTask = previousTask;\n                }\n            }\n            scheduleTask(task) {\n                if (task.zone && task.zone !== this) {\n                    // check if the task was rescheduled, the newZone\n                    // should not be the children of the original zone\n                    let newZone = this;\n                    while (newZone) {\n                        if (newZone === task.zone) {\n                            throw Error(`can not reschedule task to ${this.name} which is descendants of the original zone ${task.zone.name}`);\n                        }\n                        newZone = newZone.parent;\n                    }\n                }\n                task._transitionTo(scheduling, notScheduled);\n                const zoneDelegates = [];\n                task._zoneDelegates = zoneDelegates;\n                task._zone = this;\n                try {\n                    task = this._zoneDelegate.scheduleTask(this, task);\n                }\n                catch (err) {\n                    // should set task's state to unknown when scheduleTask throw error\n                    // because the err may from reschedule, so the fromState maybe notScheduled\n                    task._transitionTo(unknown, scheduling, notScheduled);\n                    // TODO: @JiaLiPassion, should we check the result from handleError?\n                    this._zoneDelegate.handleError(this, err);\n                    throw err;\n                }\n                if (task._zoneDelegates === zoneDelegates) {\n                    // we have to check because internally the delegate can reschedule the task.\n                    this._updateTaskCount(task, 1);\n                }\n                if (task.state == scheduling) {\n                    task._transitionTo(scheduled, scheduling);\n                }\n                return task;\n            }\n            scheduleMicroTask(source, callback, data, customSchedule) {\n                return this.scheduleTask(new ZoneTask(microTask, source, callback, data, customSchedule, undefined));\n            }\n            scheduleMacroTask(source, callback, data, customSchedule, customCancel) {\n                return this.scheduleTask(new ZoneTask(macroTask, source, callback, data, customSchedule, customCancel));\n            }\n            scheduleEventTask(source, callback, data, customSchedule, customCancel) {\n                return this.scheduleTask(new ZoneTask(eventTask, source, callback, data, customSchedule, customCancel));\n            }\n            cancelTask(task) {\n                if (task.zone != this)\n                    throw new Error('A task can only be cancelled in the zone of creation! (Creation: ' +\n                        (task.zone || NO_ZONE).name + '; Execution: ' + this.name + ')');\n                task._transitionTo(canceling, scheduled, running);\n                try {\n                    this._zoneDelegate.cancelTask(this, task);\n                }\n                catch (err) {\n                    // if error occurs when cancelTask, transit the state to unknown\n                    task._transitionTo(unknown, canceling);\n                    this._zoneDelegate.handleError(this, err);\n                    throw err;\n                }\n                this._updateTaskCount(task, -1);\n                task._transitionTo(notScheduled, canceling);\n                task.runCount = 0;\n                return task;\n            }\n            _updateTaskCount(task, count) {\n                const zoneDelegates = task._zoneDelegates;\n                if (count == -1) {\n                    task._zoneDelegates = null;\n                }\n                for (let i = 0; i < zoneDelegates.length; i++) {\n                    zoneDelegates[i]._updateTaskCount(task.type, count);\n                }\n            }\n        }\n        // tslint:disable-next-line:require-internal-with-underscore\n        Zone.__symbol__ = __symbol__;\n        const DELEGATE_ZS = {\n            name: '',\n            onHasTask: (delegate, _, target, hasTaskState) => delegate.hasTask(target, hasTaskState),\n            onScheduleTask: (delegate, _, target, task) => delegate.scheduleTask(target, task),\n            onInvokeTask: (delegate, _, target, task, applyThis, applyArgs) => delegate.invokeTask(target, task, applyThis, applyArgs),\n            onCancelTask: (delegate, _, target, task) => delegate.cancelTask(target, task)\n        };\n        class ZoneDelegate {\n            constructor(zone, parentDelegate, zoneSpec) {\n                this._taskCounts = { 'microTask': 0, 'macroTask': 0, 'eventTask': 0 };\n                this.zone = zone;\n                this._parentDelegate = parentDelegate;\n                this._forkZS =\n                    zoneSpec && (zoneSpec && zoneSpec.onFork ? zoneSpec : parentDelegate._forkZS);\n                this._forkDlgt = zoneSpec && (zoneSpec.onFork ? parentDelegate : parentDelegate._forkDlgt);\n                this._forkCurrZone =\n                    zoneSpec && (zoneSpec.onFork ? this.zone : parentDelegate._forkCurrZone);\n                this._interceptZS =\n                    zoneSpec && (zoneSpec.onIntercept ? zoneSpec : parentDelegate._interceptZS);\n                this._interceptDlgt =\n                    zoneSpec && (zoneSpec.onIntercept ? parentDelegate : parentDelegate._interceptDlgt);\n                this._interceptCurrZone =\n                    zoneSpec && (zoneSpec.onIntercept ? this.zone : parentDelegate._interceptCurrZone);\n                this._invokeZS = zoneSpec && (zoneSpec.onInvoke ? zoneSpec : parentDelegate._invokeZS);\n                this._invokeDlgt =\n                    zoneSpec && (zoneSpec.onInvoke ? parentDelegate : parentDelegate._invokeDlgt);\n                this._invokeCurrZone =\n                    zoneSpec && (zoneSpec.onInvoke ? this.zone : parentDelegate._invokeCurrZone);\n                this._handleErrorZS =\n                    zoneSpec && (zoneSpec.onHandleError ? zoneSpec : parentDelegate._handleErrorZS);\n                this._handleErrorDlgt = zoneSpec &&\n                    (zoneSpec.onHandleError ? parentDelegate : parentDelegate._handleErrorDlgt);\n                this._handleErrorCurrZone =\n                    zoneSpec && (zoneSpec.onHandleError ? this.zone : parentDelegate._handleErrorCurrZone);\n                this._scheduleTaskZS =\n                    zoneSpec && (zoneSpec.onScheduleTask ? zoneSpec : parentDelegate._scheduleTaskZS);\n                this._scheduleTaskDlgt = zoneSpec &&\n                    (zoneSpec.onScheduleTask ? parentDelegate : parentDelegate._scheduleTaskDlgt);\n                this._scheduleTaskCurrZone = zoneSpec &&\n                    (zoneSpec.onScheduleTask ? this.zone : parentDelegate._scheduleTaskCurrZone);\n                this._invokeTaskZS =\n                    zoneSpec && (zoneSpec.onInvokeTask ? zoneSpec : parentDelegate._invokeTaskZS);\n                this._invokeTaskDlgt =\n                    zoneSpec && (zoneSpec.onInvokeTask ? parentDelegate : parentDelegate._invokeTaskDlgt);\n                this._invokeTaskCurrZone =\n                    zoneSpec && (zoneSpec.onInvokeTask ? this.zone : parentDelegate._invokeTaskCurrZone);\n                this._cancelTaskZS =\n                    zoneSpec && (zoneSpec.onCancelTask ? zoneSpec : parentDelegate._cancelTaskZS);\n                this._cancelTaskDlgt =\n                    zoneSpec && (zoneSpec.onCancelTask ? parentDelegate : parentDelegate._cancelTaskDlgt);\n                this._cancelTaskCurrZone =\n                    zoneSpec && (zoneSpec.onCancelTask ? this.zone : parentDelegate._cancelTaskCurrZone);\n                this._hasTaskZS = null;\n                this._hasTaskDlgt = null;\n                this._hasTaskDlgtOwner = null;\n                this._hasTaskCurrZone = null;\n                const zoneSpecHasTask = zoneSpec && zoneSpec.onHasTask;\n                const parentHasTask = parentDelegate && parentDelegate._hasTaskZS;\n                if (zoneSpecHasTask || parentHasTask) {\n                    // If we need to report hasTask, than this ZS needs to do ref counting on tasks. In such\n                    // a case all task related interceptors must go through this ZD. We can't short circuit it.\n                    this._hasTaskZS = zoneSpecHasTask ? zoneSpec : DELEGATE_ZS;\n                    this._hasTaskDlgt = parentDelegate;\n                    this._hasTaskDlgtOwner = this;\n                    this._hasTaskCurrZone = zone;\n                    if (!zoneSpec.onScheduleTask) {\n                        this._scheduleTaskZS = DELEGATE_ZS;\n                        this._scheduleTaskDlgt = parentDelegate;\n                        this._scheduleTaskCurrZone = this.zone;\n                    }\n                    if (!zoneSpec.onInvokeTask) {\n                        this._invokeTaskZS = DELEGATE_ZS;\n                        this._invokeTaskDlgt = parentDelegate;\n                        this._invokeTaskCurrZone = this.zone;\n                    }\n                    if (!zoneSpec.onCancelTask) {\n                        this._cancelTaskZS = DELEGATE_ZS;\n                        this._cancelTaskDlgt = parentDelegate;\n                        this._cancelTaskCurrZone = this.zone;\n                    }\n                }\n            }\n            fork(targetZone, zoneSpec) {\n                return this._forkZS ?\n                    this._forkZS.onFork(this._forkDlgt, this.zone, targetZone, zoneSpec) :\n                    new Zone(targetZone, zoneSpec);\n            }\n            intercept(targetZone, callback, source) {\n                return this._interceptZS ?\n                    this._interceptZS.onIntercept(this._interceptDlgt, this._interceptCurrZone, targetZone, callback, source) :\n                    callback;\n            }\n            invoke(targetZone, callback, applyThis, applyArgs, source) {\n                return this._invokeZS ?\n                    this._invokeZS.onInvoke(this._invokeDlgt, this._invokeCurrZone, targetZone, callback, applyThis, applyArgs, source) :\n                    callback.apply(applyThis, applyArgs);\n            }\n            handleError(targetZone, error) {\n                return this._handleErrorZS ?\n                    this._handleErrorZS.onHandleError(this._handleErrorDlgt, this._handleErrorCurrZone, targetZone, error) :\n                    true;\n            }\n            scheduleTask(targetZone, task) {\n                let returnTask = task;\n                if (this._scheduleTaskZS) {\n                    if (this._hasTaskZS) {\n                        returnTask._zoneDelegates.push(this._hasTaskDlgtOwner);\n                    }\n                    // clang-format off\n                    returnTask = this._scheduleTaskZS.onScheduleTask(this._scheduleTaskDlgt, this._scheduleTaskCurrZone, targetZone, task);\n                    // clang-format on\n                    if (!returnTask)\n                        returnTask = task;\n                }\n                else {\n                    if (task.scheduleFn) {\n                        task.scheduleFn(task);\n                    }\n                    else if (task.type == microTask) {\n                        scheduleMicroTask(task);\n                    }\n                    else {\n                        throw new Error('Task is missing scheduleFn.');\n                    }\n                }\n                return returnTask;\n            }\n            invokeTask(targetZone, task, applyThis, applyArgs) {\n                return this._invokeTaskZS ?\n                    this._invokeTaskZS.onInvokeTask(this._invokeTaskDlgt, this._invokeTaskCurrZone, targetZone, task, applyThis, applyArgs) :\n                    task.callback.apply(applyThis, applyArgs);\n            }\n            cancelTask(targetZone, task) {\n                let value;\n                if (this._cancelTaskZS) {\n                    value = this._cancelTaskZS.onCancelTask(this._cancelTaskDlgt, this._cancelTaskCurrZone, targetZone, task);\n                }\n                else {\n                    if (!task.cancelFn) {\n                        throw Error('Task is not cancelable');\n                    }\n                    value = task.cancelFn(task);\n                }\n                return value;\n            }\n            hasTask(targetZone, isEmpty) {\n                // hasTask should not throw error so other ZoneDelegate\n                // can still trigger hasTask callback\n                try {\n                    this._hasTaskZS &&\n                        this._hasTaskZS.onHasTask(this._hasTaskDlgt, this._hasTaskCurrZone, targetZone, isEmpty);\n                }\n                catch (err) {\n                    this.handleError(targetZone, err);\n                }\n            }\n            // tslint:disable-next-line:require-internal-with-underscore\n            _updateTaskCount(type, count) {\n                const counts = this._taskCounts;\n                const prev = counts[type];\n                const next = counts[type] = prev + count;\n                if (next < 0) {\n                    throw new Error('More tasks executed then were scheduled.');\n                }\n                if (prev == 0 || next == 0) {\n                    const isEmpty = {\n                        microTask: counts['microTask'] > 0,\n                        macroTask: counts['macroTask'] > 0,\n                        eventTask: counts['eventTask'] > 0,\n                        change: type\n                    };\n                    this.hasTask(this.zone, isEmpty);\n                }\n            }\n        }\n        class ZoneTask {\n            constructor(type, source, callback, options, scheduleFn, cancelFn) {\n                // tslint:disable-next-line:require-internal-with-underscore\n                this._zone = null;\n                this.runCount = 0;\n                // tslint:disable-next-line:require-internal-with-underscore\n                this._zoneDelegates = null;\n                // tslint:disable-next-line:require-internal-with-underscore\n                this._state = 'notScheduled';\n                this.type = type;\n                this.source = source;\n                this.data = options;\n                this.scheduleFn = scheduleFn;\n                this.cancelFn = cancelFn;\n                if (!callback) {\n                    throw new Error('callback is not defined');\n                }\n                this.callback = callback;\n                const self = this;\n                // TODO: @JiaLiPassion options should have interface\n                if (type === eventTask && options && options.useG) {\n                    this.invoke = ZoneTask.invokeTask;\n                }\n                else {\n                    this.invoke = function () {\n                        return ZoneTask.invokeTask.call(global, self, this, arguments);\n                    };\n                }\n            }\n            static invokeTask(task, target, args) {\n                if (!task) {\n                    task = this;\n                }\n                _numberOfNestedTaskFrames++;\n                try {\n                    task.runCount++;\n                    return task.zone.runTask(task, target, args);\n                }\n                finally {\n                    if (_numberOfNestedTaskFrames == 1) {\n                        drainMicroTaskQueue();\n                    }\n                    _numberOfNestedTaskFrames--;\n                }\n            }\n            get zone() { return this._zone; }\n            get state() { return this._state; }\n            cancelScheduleRequest() { this._transitionTo(notScheduled, scheduling); }\n            // tslint:disable-next-line:require-internal-with-underscore\n            _transitionTo(toState, fromState1, fromState2) {\n                if (this._state === fromState1 || this._state === fromState2) {\n                    this._state = toState;\n                    if (toState == notScheduled) {\n                        this._zoneDelegates = null;\n                    }\n                }\n                else {\n                    throw new Error(`${this.type} '${this.source}': can not transition to '${toState}', expecting state '${fromState1}'${fromState2 ? ' or \\'' + fromState2 + '\\'' : ''}, was '${this._state}'.`);\n                }\n            }\n            toString() {\n                if (this.data && typeof this.data.handleId !== 'undefined') {\n                    return this.data.handleId.toString();\n                }\n                else {\n                    return Object.prototype.toString.call(this);\n                }\n            }\n            // add toJSON method to prevent cyclic error when\n            // call JSON.stringify(zoneTask)\n            toJSON() {\n                return {\n                    type: this.type,\n                    state: this.state,\n                    source: this.source,\n                    zone: this.zone.name,\n                    runCount: this.runCount\n                };\n            }\n        }\n        //////////////////////////////////////////////////////\n        //////////////////////////////////////////////////////\n        ///  MICROTASK QUEUE\n        //////////////////////////////////////////////////////\n        //////////////////////////////////////////////////////\n        const symbolSetTimeout = __symbol__('setTimeout');\n        const symbolPromise = __symbol__('Promise');\n        const symbolThen = __symbol__('then');\n        let _microTaskQueue = [];\n        let _isDrainingMicrotaskQueue = false;\n        let nativeMicroTaskQueuePromise;\n        function scheduleMicroTask(task) {\n            // if we are not running in any task, and there has not been anything scheduled\n            // we must bootstrap the initial task creation by manually scheduling the drain\n            if (_numberOfNestedTaskFrames === 0 && _microTaskQueue.length === 0) {\n                // We are not running in Task, so we need to kickstart the microtask queue.\n                if (!nativeMicroTaskQueuePromise) {\n                    if (global[symbolPromise]) {\n                        nativeMicroTaskQueuePromise = global[symbolPromise].resolve(0);\n                    }\n                }\n                if (nativeMicroTaskQueuePromise) {\n                    let nativeThen = nativeMicroTaskQueuePromise[symbolThen];\n                    if (!nativeThen) {\n                        // native Promise is not patchable, we need to use `then` directly\n                        // issue 1078\n                        nativeThen = nativeMicroTaskQueuePromise['then'];\n                    }\n                    nativeThen.call(nativeMicroTaskQueuePromise, drainMicroTaskQueue);\n                }\n                else {\n                    global[symbolSetTimeout](drainMicroTaskQueue, 0);\n                }\n            }\n            task && _microTaskQueue.push(task);\n        }\n        function drainMicroTaskQueue() {\n            if (!_isDrainingMicrotaskQueue) {\n                _isDrainingMicrotaskQueue = true;\n                while (_microTaskQueue.length) {\n                    const queue = _microTaskQueue;\n                    _microTaskQueue = [];\n                    for (let i = 0; i < queue.length; i++) {\n                        const task = queue[i];\n                        try {\n                            task.zone.runTask(task, null, null);\n                        }\n                        catch (error) {\n                            _api.onUnhandledError(error);\n                        }\n                    }\n                }\n                _api.microtaskDrainDone();\n                _isDrainingMicrotaskQueue = false;\n            }\n        }\n        //////////////////////////////////////////////////////\n        //////////////////////////////////////////////////////\n        ///  BOOTSTRAP\n        //////////////////////////////////////////////////////\n        //////////////////////////////////////////////////////\n        const NO_ZONE = { name: 'NO ZONE' };\n        const notScheduled = 'notScheduled', scheduling = 'scheduling', scheduled = 'scheduled', running = 'running', canceling = 'canceling', unknown = 'unknown';\n        const microTask = 'microTask', macroTask = 'macroTask', eventTask = 'eventTask';\n        const patches = {};\n        const _api = {\n            symbol: __symbol__,\n            currentZoneFrame: () => _currentZoneFrame,\n            onUnhandledError: noop,\n            microtaskDrainDone: noop,\n            scheduleMicroTask: scheduleMicroTask,\n            showUncaughtError: () => !Zone[__symbol__('ignoreConsoleErrorUncaughtError')],\n            patchEventTarget: () => [],\n            patchOnProperties: noop,\n            patchMethod: () => noop,\n            bindArguments: () => [],\n            patchThen: () => noop,\n            patchMacroTask: () => noop,\n            setNativePromise: (NativePromise) => {\n                // sometimes NativePromise.resolve static function\n                // is not ready yet, (such as core-js/es6.promise)\n                // so we need to check here.\n                if (NativePromise && typeof NativePromise.resolve === 'function') {\n                    nativeMicroTaskQueuePromise = NativePromise.resolve(0);\n                }\n            },\n            patchEventPrototype: () => noop,\n            isIEOrEdge: () => false,\n            getGlobalObjects: () => undefined,\n            ObjectDefineProperty: () => noop,\n            ObjectGetOwnPropertyDescriptor: () => undefined,\n            ObjectCreate: () => undefined,\n            ArraySlice: () => [],\n            patchClass: () => noop,\n            wrapWithCurrentZone: () => noop,\n            filterProperties: () => [],\n            attachOriginToPatched: () => noop,\n            _redefineProperty: () => noop,\n            patchCallbacks: () => noop\n        };\n        let _currentZoneFrame = { parent: null, zone: new Zone(null, null) };\n        let _currentTask = null;\n        let _numberOfNestedTaskFrames = 0;\n        function noop() { }\n        performanceMeasure('Zone', 'Zone');\n        return global['Zone'] = Zone;\n    })(typeof window !== 'undefined' && window || typeof self !== 'undefined' && self || global);\n\n    /**\n     * @license\n     * Copyright Google Inc. All Rights Reserved.\n     *\n     * Use of this source code is governed by an MIT-style license that can be\n     * found in the LICENSE file at https://angular.io/license\n     */\n    Zone.__load_patch('ZoneAwarePromise', (global, Zone, api) => {\n        const ObjectGetOwnPropertyDescriptor = Object.getOwnPropertyDescriptor;\n        const ObjectDefineProperty = Object.defineProperty;\n        function readableObjectToString(obj) {\n            if (obj && obj.toString === Object.prototype.toString) {\n                const className = obj.constructor && obj.constructor.name;\n                return (className ? className : '') + ': ' + JSON.stringify(obj);\n            }\n            return obj ? obj.toString() : Object.prototype.toString.call(obj);\n        }\n        const __symbol__ = api.symbol;\n        const _uncaughtPromiseErrors = [];\n        const isDisableWrappingUncaughtPromiseRejection = global[__symbol__('DISABLE_WRAPPING_UNCAUGHT_PROMISE_REJECTION')] === true;\n        const symbolPromise = __symbol__('Promise');\n        const symbolThen = __symbol__('then');\n        const creationTrace = '__creationTrace__';\n        api.onUnhandledError = (e) => {\n            if (api.showUncaughtError()) {\n                const rejection = e && e.rejection;\n                if (rejection) {\n                    console.error('Unhandled Promise rejection:', rejection instanceof Error ? rejection.message : rejection, '; Zone:', e.zone.name, '; Task:', e.task && e.task.source, '; Value:', rejection, rejection instanceof Error ? rejection.stack : undefined);\n                }\n                else {\n                    console.error(e);\n                }\n            }\n        };\n        api.microtaskDrainDone = () => {\n            while (_uncaughtPromiseErrors.length) {\n                const uncaughtPromiseError = _uncaughtPromiseErrors.shift();\n                try {\n                    uncaughtPromiseError.zone.runGuarded(() => { throw uncaughtPromiseError; });\n                }\n                catch (error) {\n                    handleUnhandledRejection(error);\n                }\n            }\n        };\n        const UNHANDLED_PROMISE_REJECTION_HANDLER_SYMBOL = __symbol__('unhandledPromiseRejectionHandler');\n        function handleUnhandledRejection(e) {\n            api.onUnhandledError(e);\n            try {\n                const handler = Zone[UNHANDLED_PROMISE_REJECTION_HANDLER_SYMBOL];\n                if (typeof handler === 'function') {\n                    handler.call(this, e);\n                }\n            }\n            catch (err) {\n            }\n        }\n        function isThenable(value) { return value && value.then; }\n        function forwardResolution(value) { return value; }\n        function forwardRejection(rejection) { return ZoneAwarePromise.reject(rejection); }\n        const symbolState = __symbol__('state');\n        const symbolValue = __symbol__('value');\n        const symbolFinally = __symbol__('finally');\n        const symbolParentPromiseValue = __symbol__('parentPromiseValue');\n        const symbolParentPromiseState = __symbol__('parentPromiseState');\n        const source = 'Promise.then';\n        const UNRESOLVED = null;\n        const RESOLVED = true;\n        const REJECTED = false;\n        const REJECTED_NO_CATCH = 0;\n        function makeResolver(promise, state) {\n            return (v) => {\n                try {\n                    resolvePromise(promise, state, v);\n                }\n                catch (err) {\n                    resolvePromise(promise, false, err);\n                }\n                // Do not return value or you will break the Promise spec.\n            };\n        }\n        const once = function () {\n            let wasCalled = false;\n            return function wrapper(wrappedFunction) {\n                return function () {\n                    if (wasCalled) {\n                        return;\n                    }\n                    wasCalled = true;\n                    wrappedFunction.apply(null, arguments);\n                };\n            };\n        };\n        const TYPE_ERROR = 'Promise resolved with itself';\n        const CURRENT_TASK_TRACE_SYMBOL = __symbol__('currentTaskTrace');\n        // Promise Resolution\n        function resolvePromise(promise, state, value) {\n            const onceWrapper = once();\n            if (promise === value) {\n                throw new TypeError(TYPE_ERROR);\n            }\n            if (promise[symbolState] === UNRESOLVED) {\n                // should only get value.then once based on promise spec.\n                let then = null;\n                try {\n                    if (typeof value === 'object' || typeof value === 'function') {\n                        then = value && value.then;\n                    }\n                }\n                catch (err) {\n                    onceWrapper(() => { resolvePromise(promise, false, err); })();\n                    return promise;\n                }\n                // if (value instanceof ZoneAwarePromise) {\n                if (state !== REJECTED && value instanceof ZoneAwarePromise &&\n                    value.hasOwnProperty(symbolState) && value.hasOwnProperty(symbolValue) &&\n                    value[symbolState] !== UNRESOLVED) {\n                    clearRejectedNoCatch(value);\n                    resolvePromise(promise, value[symbolState], value[symbolValue]);\n                }\n                else if (state !== REJECTED && typeof then === 'function') {\n                    try {\n                        then.call(value, onceWrapper(makeResolver(promise, state)), onceWrapper(makeResolver(promise, false)));\n                    }\n                    catch (err) {\n                        onceWrapper(() => { resolvePromise(promise, false, err); })();\n                    }\n                }\n                else {\n                    promise[symbolState] = state;\n                    const queue = promise[symbolValue];\n                    promise[symbolValue] = value;\n                    if (promise[symbolFinally] === symbolFinally) {\n                        // the promise is generated by Promise.prototype.finally\n                        if (state === RESOLVED) {\n                            // the state is resolved, should ignore the value\n                            // and use parent promise value\n                            promise[symbolState] = promise[symbolParentPromiseState];\n                            promise[symbolValue] = promise[symbolParentPromiseValue];\n                        }\n                    }\n                    // record task information in value when error occurs, so we can\n                    // do some additional work such as render longStackTrace\n                    if (state === REJECTED && value instanceof Error) {\n                        // check if longStackTraceZone is here\n                        const trace = Zone.currentTask && Zone.currentTask.data &&\n                            Zone.currentTask.data[creationTrace];\n                        if (trace) {\n                            // only keep the long stack trace into error when in longStackTraceZone\n                            ObjectDefineProperty(value, CURRENT_TASK_TRACE_SYMBOL, { configurable: true, enumerable: false, writable: true, value: trace });\n                        }\n                    }\n                    for (let i = 0; i < queue.length;) {\n                        scheduleResolveOrReject(promise, queue[i++], queue[i++], queue[i++], queue[i++]);\n                    }\n                    if (queue.length == 0 && state == REJECTED) {\n                        promise[symbolState] = REJECTED_NO_CATCH;\n                        let uncaughtPromiseError = value;\n                        if (!isDisableWrappingUncaughtPromiseRejection) {\n                            // If disable wrapping uncaught promise reject\n                            // and the rejected value is an Error object,\n                            // use the value instead of wrapping it.\n                            try {\n                                // Here we throws a new Error to print more readable error log\n                                // and if the value is not an error, zone.js builds an `Error`\n                                // Object here to attach the stack information.\n                                throw new Error('Uncaught (in promise): ' + readableObjectToString(value) +\n                                    (value && value.stack ? '\\n' + value.stack : ''));\n                            }\n                            catch (err) {\n                                uncaughtPromiseError = err;\n                            }\n                        }\n                        uncaughtPromiseError.rejection = value;\n                        uncaughtPromiseError.promise = promise;\n                        uncaughtPromiseError.zone = Zone.current;\n                        uncaughtPromiseError.task = Zone.currentTask;\n                        _uncaughtPromiseErrors.push(uncaughtPromiseError);\n                        api.scheduleMicroTask(); // to make sure that it is running\n                    }\n                }\n            }\n            // Resolving an already resolved promise is a noop.\n            return promise;\n        }\n        const REJECTION_HANDLED_HANDLER = __symbol__('rejectionHandledHandler');\n        function clearRejectedNoCatch(promise) {\n            if (promise[symbolState] === REJECTED_NO_CATCH) {\n                // if the promise is rejected no catch status\n                // and queue.length > 0, means there is a error handler\n                // here to handle the rejected promise, we should trigger\n                // windows.rejectionhandled eventHandler or nodejs rejectionHandled\n                // eventHandler\n                try {\n                    const handler = Zone[REJECTION_HANDLED_HANDLER];\n                    if (handler && typeof handler === 'function') {\n                        handler.call(this, { rejection: promise[symbolValue], promise: promise });\n                    }\n                }\n                catch (err) {\n                }\n                promise[symbolState] = REJECTED;\n                for (let i = 0; i < _uncaughtPromiseErrors.length; i++) {\n                    if (promise === _uncaughtPromiseErrors[i].promise) {\n                        _uncaughtPromiseErrors.splice(i, 1);\n                    }\n                }\n            }\n        }\n        function scheduleResolveOrReject(promise, zone, chainPromise, onFulfilled, onRejected) {\n            clearRejectedNoCatch(promise);\n            const promiseState = promise[symbolState];\n            const delegate = promiseState ?\n                (typeof onFulfilled === 'function') ? onFulfilled : forwardResolution :\n                (typeof onRejected === 'function') ? onRejected : forwardRejection;\n            zone.scheduleMicroTask(source, () => {\n                try {\n                    const parentPromiseValue = promise[symbolValue];\n                    const isFinallyPromise = !!chainPromise && symbolFinally === chainPromise[symbolFinally];\n                    if (isFinallyPromise) {\n                        // if the promise is generated from finally call, keep parent promise's state and value\n                        chainPromise[symbolParentPromiseValue] = parentPromiseValue;\n                        chainPromise[symbolParentPromiseState] = promiseState;\n                    }\n                    // should not pass value to finally callback\n                    const value = zone.run(delegate, undefined, isFinallyPromise && delegate !== forwardRejection && delegate !== forwardResolution ?\n                        [] :\n                        [parentPromiseValue]);\n                    resolvePromise(chainPromise, true, value);\n                }\n                catch (error) {\n                    // if error occurs, should always return this error\n                    resolvePromise(chainPromise, false, error);\n                }\n            }, chainPromise);\n        }\n        const ZONE_AWARE_PROMISE_TO_STRING = 'function ZoneAwarePromise() { [native code] }';\n        const noop = function () { };\n        class ZoneAwarePromise {\n            static toString() { return ZONE_AWARE_PROMISE_TO_STRING; }\n            static resolve(value) {\n                return resolvePromise(new this(null), RESOLVED, value);\n            }\n            static reject(error) {\n                return resolvePromise(new this(null), REJECTED, error);\n            }\n            static race(values) {\n                let resolve;\n                let reject;\n                let promise = new this((res, rej) => {\n                    resolve = res;\n                    reject = rej;\n                });\n                function onResolve(value) { resolve(value); }\n                function onReject(error) { reject(error); }\n                for (let value of values) {\n                    if (!isThenable(value)) {\n                        value = this.resolve(value);\n                    }\n                    value.then(onResolve, onReject);\n                }\n                return promise;\n            }\n            static all(values) { return ZoneAwarePromise.allWithCallback(values); }\n            static allSettled(values) {\n                const P = this && this.prototype instanceof ZoneAwarePromise ? this : ZoneAwarePromise;\n                return P.allWithCallback(values, {\n                    thenCallback: (value) => ({ status: 'fulfilled', value }),\n                    errorCallback: (err) => ({ status: 'rejected', reason: err })\n                });\n            }\n            static allWithCallback(values, callback) {\n                let resolve;\n                let reject;\n                let promise = new this((res, rej) => {\n                    resolve = res;\n                    reject = rej;\n                });\n                // Start at 2 to prevent prematurely resolving if .then is called immediately.\n                let unresolvedCount = 2;\n                let valueIndex = 0;\n                const resolvedValues = [];\n                for (let value of values) {\n                    if (!isThenable(value)) {\n                        value = this.resolve(value);\n                    }\n                    const curValueIndex = valueIndex;\n                    try {\n                        value.then((value) => {\n                            resolvedValues[curValueIndex] = callback ? callback.thenCallback(value) : value;\n                            unresolvedCount--;\n                            if (unresolvedCount === 0) {\n                                resolve(resolvedValues);\n                            }\n                        }, (err) => {\n                            if (!callback) {\n                                reject(err);\n                            }\n                            else {\n                                resolvedValues[curValueIndex] = callback.errorCallback(err);\n                                unresolvedCount--;\n                                if (unresolvedCount === 0) {\n                                    resolve(resolvedValues);\n                                }\n                            }\n                        });\n                    }\n                    catch (thenErr) {\n                        reject(thenErr);\n                    }\n                    unresolvedCount++;\n                    valueIndex++;\n                }\n                // Make the unresolvedCount zero-based again.\n                unresolvedCount -= 2;\n                if (unresolvedCount === 0) {\n                    resolve(resolvedValues);\n                }\n                return promise;\n            }\n            constructor(executor) {\n                const promise = this;\n                if (!(promise instanceof ZoneAwarePromise)) {\n                    throw new Error('Must be an instanceof Promise.');\n                }\n                promise[symbolState] = UNRESOLVED;\n                promise[symbolValue] = []; // queue;\n                try {\n                    executor && executor(makeResolver(promise, RESOLVED), makeResolver(promise, REJECTED));\n                }\n                catch (error) {\n                    resolvePromise(promise, false, error);\n                }\n            }\n            get [Symbol.toStringTag]() { return 'Promise'; }\n            get [Symbol.species]() { return ZoneAwarePromise; }\n            then(onFulfilled, onRejected) {\n                let C = this.constructor[Symbol.species];\n                if (!C || typeof C !== 'function') {\n                    C = this.constructor || ZoneAwarePromise;\n                }\n                const chainPromise = new C(noop);\n                const zone = Zone.current;\n                if (this[symbolState] == UNRESOLVED) {\n                    this[symbolValue].push(zone, chainPromise, onFulfilled, onRejected);\n                }\n                else {\n                    scheduleResolveOrReject(this, zone, chainPromise, onFulfilled, onRejected);\n                }\n                return chainPromise;\n            }\n            catch(onRejected) {\n                return this.then(null, onRejected);\n            }\n            finally(onFinally) {\n                let C = this.constructor[Symbol.species];\n                if (!C || typeof C !== 'function') {\n                    C = ZoneAwarePromise;\n                }\n                const chainPromise = new C(noop);\n                chainPromise[symbolFinally] = symbolFinally;\n                const zone = Zone.current;\n                if (this[symbolState] == UNRESOLVED) {\n                    this[symbolValue].push(zone, chainPromise, onFinally, onFinally);\n                }\n                else {\n                    scheduleResolveOrReject(this, zone, chainPromise, onFinally, onFinally);\n                }\n                return chainPromise;\n            }\n        }\n        // Protect against aggressive optimizers dropping seemingly unused properties.\n        // E.g. Closure Compiler in advanced mode.\n        ZoneAwarePromise['resolve'] = ZoneAwarePromise.resolve;\n        ZoneAwarePromise['reject'] = ZoneAwarePromise.reject;\n        ZoneAwarePromise['race'] = ZoneAwarePromise.race;\n        ZoneAwarePromise['all'] = ZoneAwarePromise.all;\n        const NativePromise = global[symbolPromise] = global['Promise'];\n        const ZONE_AWARE_PROMISE = Zone.__symbol__('ZoneAwarePromise');\n        let desc = ObjectGetOwnPropertyDescriptor(global, 'Promise');\n        if (!desc || desc.configurable) {\n            desc && delete desc.writable;\n            desc && delete desc.value;\n            if (!desc) {\n                desc = { configurable: true, enumerable: true };\n            }\n            desc.get = function () {\n                // if we already set ZoneAwarePromise, use patched one\n                // otherwise return native one.\n                return global[ZONE_AWARE_PROMISE] ? global[ZONE_AWARE_PROMISE] : global[symbolPromise];\n            };\n            desc.set = function (NewNativePromise) {\n                if (NewNativePromise === ZoneAwarePromise) {\n                    // if the NewNativePromise is ZoneAwarePromise\n                    // save to global\n                    global[ZONE_AWARE_PROMISE] = NewNativePromise;\n                }\n                else {\n                    // if the NewNativePromise is not ZoneAwarePromise\n                    // for example: after load zone.js, some library just\n                    // set es6-promise to global, if we set it to global\n                    // directly, assertZonePatched will fail and angular\n                    // will not loaded, so we just set the NewNativePromise\n                    // to global[symbolPromise], so the result is just like\n                    // we load ES6 Promise before zone.js\n                    global[symbolPromise] = NewNativePromise;\n                    if (!NewNativePromise.prototype[symbolThen]) {\n                        patchThen(NewNativePromise);\n                    }\n                    api.setNativePromise(NewNativePromise);\n                }\n            };\n            ObjectDefineProperty(global, 'Promise', desc);\n        }\n        global['Promise'] = ZoneAwarePromise;\n        const symbolThenPatched = __symbol__('thenPatched');\n        function patchThen(Ctor) {\n            const proto = Ctor.prototype;\n            const prop = ObjectGetOwnPropertyDescriptor(proto, 'then');\n            if (prop && (prop.writable === false || !prop.configurable)) {\n                // check Ctor.prototype.then propertyDescriptor is writable or not\n                // in meteor env, writable is false, we should ignore such case\n                return;\n            }\n            const originalThen = proto.then;\n            // Keep a reference to the original method.\n            proto[symbolThen] = originalThen;\n            Ctor.prototype.then = function (onResolve, onReject) {\n                const wrapped = new ZoneAwarePromise((resolve, reject) => { originalThen.call(this, resolve, reject); });\n                return wrapped.then(onResolve, onReject);\n            };\n            Ctor[symbolThenPatched] = true;\n        }\n        api.patchThen = patchThen;\n        function zoneify(fn) {\n            return function () {\n                let resultPromise = fn.apply(this, arguments);\n                if (resultPromise instanceof ZoneAwarePromise) {\n                    return resultPromise;\n                }\n                let ctor = resultPromise.constructor;\n                if (!ctor[symbolThenPatched]) {\n                    patchThen(ctor);\n                }\n                return resultPromise;\n            };\n        }\n        if (NativePromise) {\n            patchThen(NativePromise);\n            const fetch = global['fetch'];\n            if (typeof fetch == 'function') {\n                global[api.symbol('fetch')] = fetch;\n                global['fetch'] = zoneify(fetch);\n            }\n        }\n        // This is not part of public API, but it is useful for tests, so we expose it.\n        Promise[Zone.__symbol__('uncaughtPromiseErrors')] = _uncaughtPromiseErrors;\n        return ZoneAwarePromise;\n    });\n\n    /**\n     * @license\n     * Copyright Google Inc. All Rights Reserved.\n     *\n     * Use of this source code is governed by an MIT-style license that can be\n     * found in the LICENSE file at https://angular.io/license\n     */\n    /**\n     * Suppress closure compiler errors about unknown 'Zone' variable\n     * @fileoverview\n     * @suppress {undefinedVars,globalThis,missingRequire}\n     */\n    /// <reference types=\"node\"/>\n    // issue #989, to reduce bundle size, use short name\n    /** Object.getOwnPropertyDescriptor */\n    const ObjectGetOwnPropertyDescriptor = Object.getOwnPropertyDescriptor;\n    /** Object.defineProperty */\n    const ObjectDefineProperty = Object.defineProperty;\n    /** Object.getPrototypeOf */\n    const ObjectGetPrototypeOf = Object.getPrototypeOf;\n    /** Object.create */\n    const ObjectCreate = Object.create;\n    /** Array.prototype.slice */\n    const ArraySlice = Array.prototype.slice;\n    /** addEventListener string const */\n    const ADD_EVENT_LISTENER_STR = 'addEventListener';\n    /** removeEventListener string const */\n    const REMOVE_EVENT_LISTENER_STR = 'removeEventListener';\n    /** zoneSymbol addEventListener */\n    const ZONE_SYMBOL_ADD_EVENT_LISTENER = Zone.__symbol__(ADD_EVENT_LISTENER_STR);\n    /** zoneSymbol removeEventListener */\n    const ZONE_SYMBOL_REMOVE_EVENT_LISTENER = Zone.__symbol__(REMOVE_EVENT_LISTENER_STR);\n    /** true string const */\n    const TRUE_STR = 'true';\n    /** false string const */\n    const FALSE_STR = 'false';\n    /** Zone symbol prefix string const. */\n    const ZONE_SYMBOL_PREFIX = Zone.__symbol__('');\n    function wrapWithCurrentZone(callback, source) {\n        return Zone.current.wrap(callback, source);\n    }\n    function scheduleMacroTaskWithCurrentZone(source, callback, data, customSchedule, customCancel) {\n        return Zone.current.scheduleMacroTask(source, callback, data, customSchedule, customCancel);\n    }\n    const zoneSymbol = Zone.__symbol__;\n    const isWindowExists = typeof window !== 'undefined';\n    const internalWindow = isWindowExists ? window : undefined;\n    const _global = isWindowExists && internalWindow || typeof self === 'object' && self || global;\n    const REMOVE_ATTRIBUTE = 'removeAttribute';\n    const NULL_ON_PROP_VALUE = [null];\n    function bindArguments(args, source) {\n        for (let i = args.length - 1; i >= 0; i--) {\n            if (typeof args[i] === 'function') {\n                args[i] = wrapWithCurrentZone(args[i], source + '_' + i);\n            }\n        }\n        return args;\n    }\n    function patchPrototype(prototype, fnNames) {\n        const source = prototype.constructor['name'];\n        for (let i = 0; i < fnNames.length; i++) {\n            const name = fnNames[i];\n            const delegate = prototype[name];\n            if (delegate) {\n                const prototypeDesc = ObjectGetOwnPropertyDescriptor(prototype, name);\n                if (!isPropertyWritable(prototypeDesc)) {\n                    continue;\n                }\n                prototype[name] = ((delegate) => {\n                    const patched = function () {\n                        return delegate.apply(this, bindArguments(arguments, source + '.' + name));\n                    };\n                    attachOriginToPatched(patched, delegate);\n                    return patched;\n                })(delegate);\n            }\n        }\n    }\n    function isPropertyWritable(propertyDesc) {\n        if (!propertyDesc) {\n            return true;\n        }\n        if (propertyDesc.writable === false) {\n            return false;\n        }\n        return !(typeof propertyDesc.get === 'function' && typeof propertyDesc.set === 'undefined');\n    }\n    const isWebWorker = (typeof WorkerGlobalScope !== 'undefined' && self instanceof WorkerGlobalScope);\n    // Make sure to access `process` through `_global` so that WebPack does not accidentally browserify\n    // this code.\n    const isNode = (!('nw' in _global) && typeof _global.process !== 'undefined' &&\n        {}.toString.call(_global.process) === '[object process]');\n    const isBrowser = !isNode && !isWebWorker && !!(isWindowExists && internalWindow['HTMLElement']);\n    // we are in electron of nw, so we are both browser and nodejs\n    // Make sure to access `process` through `_global` so that WebPack does not accidentally browserify\n    // this code.\n    const isMix = typeof _global.process !== 'undefined' &&\n        {}.toString.call(_global.process) === '[object process]' && !isWebWorker &&\n        !!(isWindowExists && internalWindow['HTMLElement']);\n    const zoneSymbolEventNames = {};\n    const wrapFn = function (event) {\n        // https://github.com/angular/zone.js/issues/911, in IE, sometimes\n        // event will be undefined, so we need to use window.event\n        event = event || _global.event;\n        if (!event) {\n            return;\n        }\n        let eventNameSymbol = zoneSymbolEventNames[event.type];\n        if (!eventNameSymbol) {\n            eventNameSymbol = zoneSymbolEventNames[event.type] = zoneSymbol('ON_PROPERTY' + event.type);\n        }\n        const target = this || event.target || _global;\n        const listener = target[eventNameSymbol];\n        let result;\n        if (isBrowser && target === internalWindow && event.type === 'error') {\n            // window.onerror have different signiture\n            // https://developer.mozilla.org/en-US/docs/Web/API/GlobalEventHandlers/onerror#window.onerror\n            // and onerror callback will prevent default when callback return true\n            const errorEvent = event;\n            result = listener &&\n                listener.call(this, errorEvent.message, errorEvent.filename, errorEvent.lineno, errorEvent.colno, errorEvent.error);\n            if (result === true) {\n                event.preventDefault();\n            }\n        }\n        else {\n            result = listener && listener.apply(this, arguments);\n            if (result != undefined && !result) {\n                event.preventDefault();\n            }\n        }\n        return result;\n    };\n    function patchProperty(obj, prop, prototype) {\n        let desc = ObjectGetOwnPropertyDescriptor(obj, prop);\n        if (!desc && prototype) {\n            // when patch window object, use prototype to check prop exist or not\n            const prototypeDesc = ObjectGetOwnPropertyDescriptor(prototype, prop);\n            if (prototypeDesc) {\n                desc = { enumerable: true, configurable: true };\n            }\n        }\n        // if the descriptor not exists or is not configurable\n        // just return\n        if (!desc || !desc.configurable) {\n            return;\n        }\n        const onPropPatchedSymbol = zoneSymbol('on' + prop + 'patched');\n        if (obj.hasOwnProperty(onPropPatchedSymbol) && obj[onPropPatchedSymbol]) {\n            return;\n        }\n        // A property descriptor cannot have getter/setter and be writable\n        // deleting the writable and value properties avoids this error:\n        //\n        // TypeError: property descriptors must not specify a value or be writable when a\n        // getter or setter has been specified\n        delete desc.writable;\n        delete desc.value;\n        const originalDescGet = desc.get;\n        const originalDescSet = desc.set;\n        // substr(2) cuz 'onclick' -> 'click', etc\n        const eventName = prop.substr(2);\n        let eventNameSymbol = zoneSymbolEventNames[eventName];\n        if (!eventNameSymbol) {\n            eventNameSymbol = zoneSymbolEventNames[eventName] = zoneSymbol('ON_PROPERTY' + eventName);\n        }\n        desc.set = function (newValue) {\n            // in some of windows's onproperty callback, this is undefined\n            // so we need to check it\n            let target = this;\n            if (!target && obj === _global) {\n                target = _global;\n            }\n            if (!target) {\n                return;\n            }\n            let previousValue = target[eventNameSymbol];\n            if (previousValue) {\n                target.removeEventListener(eventName, wrapFn);\n            }\n            // issue #978, when onload handler was added before loading zone.js\n            // we should remove it with originalDescSet\n            if (originalDescSet) {\n                originalDescSet.apply(target, NULL_ON_PROP_VALUE);\n            }\n            if (typeof newValue === 'function') {\n                target[eventNameSymbol] = newValue;\n                target.addEventListener(eventName, wrapFn, false);\n            }\n            else {\n                target[eventNameSymbol] = null;\n            }\n        };\n        // The getter would return undefined for unassigned properties but the default value of an\n        // unassigned property is null\n        desc.get = function () {\n            // in some of windows's onproperty callback, this is undefined\n            // so we need to check it\n            let target = this;\n            if (!target && obj === _global) {\n                target = _global;\n            }\n            if (!target) {\n                return null;\n            }\n            const listener = target[eventNameSymbol];\n            if (listener) {\n                return listener;\n            }\n            else if (originalDescGet) {\n                // result will be null when use inline event attribute,\n                // such as <button onclick=\"func();\">OK</button>\n                // because the onclick function is internal raw uncompiled handler\n                // the onclick will be evaluated when first time event was triggered or\n                // the property is accessed, https://github.com/angular/zone.js/issues/525\n                // so we should use original native get to retrieve the handler\n                let value = originalDescGet && originalDescGet.call(this);\n                if (value) {\n                    desc.set.call(this, value);\n                    if (typeof target[REMOVE_ATTRIBUTE] === 'function') {\n                        target.removeAttribute(prop);\n                    }\n                    return value;\n                }\n            }\n            return null;\n        };\n        ObjectDefineProperty(obj, prop, desc);\n        obj[onPropPatchedSymbol] = true;\n    }\n    function patchOnProperties(obj, properties, prototype) {\n        if (properties) {\n            for (let i = 0; i < properties.length; i++) {\n                patchProperty(obj, 'on' + properties[i], prototype);\n            }\n        }\n        else {\n            const onProperties = [];\n            for (const prop in obj) {\n                if (prop.substr(0, 2) == 'on') {\n                    onProperties.push(prop);\n                }\n            }\n            for (let j = 0; j < onProperties.length; j++) {\n                patchProperty(obj, onProperties[j], prototype);\n            }\n        }\n    }\n    const originalInstanceKey = zoneSymbol('originalInstance');\n    // wrap some native API on `window`\n    function patchClass(className) {\n        const OriginalClass = _global[className];\n        if (!OriginalClass)\n            return;\n        // keep original class in global\n        _global[zoneSymbol(className)] = OriginalClass;\n        _global[className] = function () {\n            const a = bindArguments(arguments, className);\n            switch (a.length) {\n                case 0:\n                    this[originalInstanceKey] = new OriginalClass();\n                    break;\n                case 1:\n                    this[originalInstanceKey] = new OriginalClass(a[0]);\n                    break;\n                case 2:\n                    this[originalInstanceKey] = new OriginalClass(a[0], a[1]);\n                    break;\n                case 3:\n                    this[originalInstanceKey] = new OriginalClass(a[0], a[1], a[2]);\n                    break;\n                case 4:\n                    this[originalInstanceKey] = new OriginalClass(a[0], a[1], a[2], a[3]);\n                    break;\n                default:\n                    throw new Error('Arg list too long.');\n            }\n        };\n        // attach original delegate to patched function\n        attachOriginToPatched(_global[className], OriginalClass);\n        const instance = new OriginalClass(function () { });\n        let prop;\n        for (prop in instance) {\n            // https://bugs.webkit.org/show_bug.cgi?id=44721\n            if (className === 'XMLHttpRequest' && prop === 'responseBlob')\n                continue;\n            (function (prop) {\n                if (typeof instance[prop] === 'function') {\n                    _global[className].prototype[prop] = function () {\n                        return this[originalInstanceKey][prop].apply(this[originalInstanceKey], arguments);\n                    };\n                }\n                else {\n                    ObjectDefineProperty(_global[className].prototype, prop, {\n                        set: function (fn) {\n                            if (typeof fn === 'function') {\n                                this[originalInstanceKey][prop] = wrapWithCurrentZone(fn, className + '.' + prop);\n                                // keep callback in wrapped function so we can\n                                // use it in Function.prototype.toString to return\n                                // the native one.\n                                attachOriginToPatched(this[originalInstanceKey][prop], fn);\n                            }\n                            else {\n                                this[originalInstanceKey][prop] = fn;\n                            }\n                        },\n                        get: function () { return this[originalInstanceKey][prop]; }\n                    });\n                }\n            }(prop));\n        }\n        for (prop in OriginalClass) {\n            if (prop !== 'prototype' && OriginalClass.hasOwnProperty(prop)) {\n                _global[className][prop] = OriginalClass[prop];\n            }\n        }\n    }\n    function copySymbolProperties(src, dest) {\n        if (typeof Object.getOwnPropertySymbols !== 'function') {\n            return;\n        }\n        const symbols = Object.getOwnPropertySymbols(src);\n        symbols.forEach((symbol) => {\n            const desc = Object.getOwnPropertyDescriptor(src, symbol);\n            Object.defineProperty(dest, symbol, {\n                get: function () { return src[symbol]; },\n                set: function (value) {\n                    if (desc && (!desc.writable || typeof desc.set !== 'function')) {\n                        // if src[symbol] is not writable or not have a setter, just return\n                        return;\n                    }\n                    src[symbol] = value;\n                },\n                enumerable: desc ? desc.enumerable : true,\n                configurable: desc ? desc.configurable : true\n            });\n        });\n    }\n    let shouldCopySymbolProperties = false;\n    function patchMethod(target, name, patchFn) {\n        let proto = target;\n        while (proto && !proto.hasOwnProperty(name)) {\n            proto = ObjectGetPrototypeOf(proto);\n        }\n        if (!proto && target[name]) {\n            // somehow we did not find it, but we can see it. This happens on IE for Window properties.\n            proto = target;\n        }\n        const delegateName = zoneSymbol(name);\n        let delegate = null;\n        if (proto && !(delegate = proto[delegateName])) {\n            delegate = proto[delegateName] = proto[name];\n            // check whether proto[name] is writable\n            // some property is readonly in safari, such as HtmlCanvasElement.prototype.toBlob\n            const desc = proto && ObjectGetOwnPropertyDescriptor(proto, name);\n            if (isPropertyWritable(desc)) {\n                const patchDelegate = patchFn(delegate, delegateName, name);\n                proto[name] = function () { return patchDelegate(this, arguments); };\n                attachOriginToPatched(proto[name], delegate);\n                if (shouldCopySymbolProperties) {\n                    copySymbolProperties(delegate, proto[name]);\n                }\n            }\n        }\n        return delegate;\n    }\n    // TODO: @JiaLiPassion, support cancel task later if necessary\n    function patchMacroTask(obj, funcName, metaCreator) {\n        let setNative = null;\n        function scheduleTask(task) {\n            const data = task.data;\n            data.args[data.cbIdx] = function () { task.invoke.apply(this, arguments); };\n            setNative.apply(data.target, data.args);\n            return task;\n        }\n        setNative = patchMethod(obj, funcName, (delegate) => function (self, args) {\n            const meta = metaCreator(self, args);\n            if (meta.cbIdx >= 0 && typeof args[meta.cbIdx] === 'function') {\n                return scheduleMacroTaskWithCurrentZone(meta.name, args[meta.cbIdx], meta, scheduleTask);\n            }\n            else {\n                // cause an error by calling it directly.\n                return delegate.apply(self, args);\n            }\n        });\n    }\n    function attachOriginToPatched(patched, original) {\n        patched[zoneSymbol('OriginalDelegate')] = original;\n    }\n    let isDetectedIEOrEdge = false;\n    let ieOrEdge = false;\n    function isIE() {\n        try {\n            const ua = internalWindow.navigator.userAgent;\n            if (ua.indexOf('MSIE ') !== -1 || ua.indexOf('Trident/') !== -1) {\n                return true;\n            }\n        }\n        catch (error) {\n        }\n        return false;\n    }\n    function isIEOrEdge() {\n        if (isDetectedIEOrEdge) {\n            return ieOrEdge;\n        }\n        isDetectedIEOrEdge = true;\n        try {\n            const ua = internalWindow.navigator.userAgent;\n            if (ua.indexOf('MSIE ') !== -1 || ua.indexOf('Trident/') !== -1 || ua.indexOf('Edge/') !== -1) {\n                ieOrEdge = true;\n            }\n        }\n        catch (error) {\n        }\n        return ieOrEdge;\n    }\n\n    /**\n     * @license\n     * Copyright Google Inc. All Rights Reserved.\n     *\n     * Use of this source code is governed by an MIT-style license that can be\n     * found in the LICENSE file at https://angular.io/license\n     */\n    // override Function.prototype.toString to make zone.js patched function\n    // look like native function\n    Zone.__load_patch('toString', (global) => {\n        // patch Func.prototype.toString to let them look like native\n        const originalFunctionToString = Function.prototype.toString;\n        const ORIGINAL_DELEGATE_SYMBOL = zoneSymbol('OriginalDelegate');\n        const PROMISE_SYMBOL = zoneSymbol('Promise');\n        const ERROR_SYMBOL = zoneSymbol('Error');\n        const newFunctionToString = function toString() {\n            if (typeof this === 'function') {\n                const originalDelegate = this[ORIGINAL_DELEGATE_SYMBOL];\n                if (originalDelegate) {\n                    if (typeof originalDelegate === 'function') {\n                        return originalFunctionToString.call(originalDelegate);\n                    }\n                    else {\n                        return Object.prototype.toString.call(originalDelegate);\n                    }\n                }\n                if (this === Promise) {\n                    const nativePromise = global[PROMISE_SYMBOL];\n                    if (nativePromise) {\n                        return originalFunctionToString.call(nativePromise);\n                    }\n                }\n                if (this === Error) {\n                    const nativeError = global[ERROR_SYMBOL];\n                    if (nativeError) {\n                        return originalFunctionToString.call(nativeError);\n                    }\n                }\n            }\n            return originalFunctionToString.call(this);\n        };\n        newFunctionToString[ORIGINAL_DELEGATE_SYMBOL] = originalFunctionToString;\n        Function.prototype.toString = newFunctionToString;\n        // patch Object.prototype.toString to let them look like native\n        const originalObjectToString = Object.prototype.toString;\n        const PROMISE_OBJECT_TO_STRING = '[object Promise]';\n        Object.prototype.toString = function () {\n            if (this instanceof Promise) {\n                return PROMISE_OBJECT_TO_STRING;\n            }\n            return originalObjectToString.call(this);\n        };\n    });\n\n    /**\n     * @license\n     * Copyright Google Inc. All Rights Reserved.\n     *\n     * Use of this source code is governed by an MIT-style license that can be\n     * found in the LICENSE file at https://angular.io/license\n     */\n    let passiveSupported = false;\n    if (typeof window !== 'undefined') {\n        try {\n            const options = Object.defineProperty({}, 'passive', { get: function () { passiveSupported = true; } });\n            window.addEventListener('test', options, options);\n            window.removeEventListener('test', options, options);\n        }\n        catch (err) {\n            passiveSupported = false;\n        }\n    }\n    // an identifier to tell ZoneTask do not create a new invoke closure\n    const OPTIMIZED_ZONE_EVENT_TASK_DATA = {\n        useG: true\n    };\n    const zoneSymbolEventNames$1 = {};\n    const globalSources = {};\n    const EVENT_NAME_SYMBOL_REGX = new RegExp('^' + ZONE_SYMBOL_PREFIX + '(\\\\w+)(true|false)$');\n    const IMMEDIATE_PROPAGATION_SYMBOL = zoneSymbol('propagationStopped');\n    function prepareEventNames(eventName, eventNameToString) {\n        const falseEventName = (eventNameToString ? eventNameToString(eventName) : eventName) + FALSE_STR;\n        const trueEventName = (eventNameToString ? eventNameToString(eventName) : eventName) + TRUE_STR;\n        const symbol = ZONE_SYMBOL_PREFIX + falseEventName;\n        const symbolCapture = ZONE_SYMBOL_PREFIX + trueEventName;\n        zoneSymbolEventNames$1[eventName] = {};\n        zoneSymbolEventNames$1[eventName][FALSE_STR] = symbol;\n        zoneSymbolEventNames$1[eventName][TRUE_STR] = symbolCapture;\n    }\n    function patchEventTarget(_global, apis, patchOptions) {\n        const ADD_EVENT_LISTENER = (patchOptions && patchOptions.add) || ADD_EVENT_LISTENER_STR;\n        const REMOVE_EVENT_LISTENER = (patchOptions && patchOptions.rm) || REMOVE_EVENT_LISTENER_STR;\n        const LISTENERS_EVENT_LISTENER = (patchOptions && patchOptions.listeners) || 'eventListeners';\n        const REMOVE_ALL_LISTENERS_EVENT_LISTENER = (patchOptions && patchOptions.rmAll) || 'removeAllListeners';\n        const zoneSymbolAddEventListener = zoneSymbol(ADD_EVENT_LISTENER);\n        const ADD_EVENT_LISTENER_SOURCE = '.' + ADD_EVENT_LISTENER + ':';\n        const PREPEND_EVENT_LISTENER = 'prependListener';\n        const PREPEND_EVENT_LISTENER_SOURCE = '.' + PREPEND_EVENT_LISTENER + ':';\n        const invokeTask = function (task, target, event) {\n            // for better performance, check isRemoved which is set\n            // by removeEventListener\n            if (task.isRemoved) {\n                return;\n            }\n            const delegate = task.callback;\n            if (typeof delegate === 'object' && delegate.handleEvent) {\n                // create the bind version of handleEvent when invoke\n                task.callback = (event) => delegate.handleEvent(event);\n                task.originalDelegate = delegate;\n            }\n            // invoke static task.invoke\n            task.invoke(task, target, [event]);\n            const options = task.options;\n            if (options && typeof options === 'object' && options.once) {\n                // if options.once is true, after invoke once remove listener here\n                // only browser need to do this, nodejs eventEmitter will cal removeListener\n                // inside EventEmitter.once\n                const delegate = task.originalDelegate ? task.originalDelegate : task.callback;\n                target[REMOVE_EVENT_LISTENER].call(target, event.type, delegate, options);\n            }\n        };\n        // global shared zoneAwareCallback to handle all event callback with capture = false\n        const globalZoneAwareCallback = function (event) {\n            // https://github.com/angular/zone.js/issues/911, in IE, sometimes\n            // event will be undefined, so we need to use window.event\n            event = event || _global.event;\n            if (!event) {\n                return;\n            }\n            // event.target is needed for Samsung TV and SourceBuffer\n            // || global is needed https://github.com/angular/zone.js/issues/190\n            const target = this || event.target || _global;\n            const tasks = target[zoneSymbolEventNames$1[event.type][FALSE_STR]];\n            if (tasks) {\n                // invoke all tasks which attached to current target with given event.type and capture = false\n                // for performance concern, if task.length === 1, just invoke\n                if (tasks.length === 1) {\n                    invokeTask(tasks[0], target, event);\n                }\n                else {\n                    // https://github.com/angular/zone.js/issues/836\n                    // copy the tasks array before invoke, to avoid\n                    // the callback will remove itself or other listener\n                    const copyTasks = tasks.slice();\n                    for (let i = 0; i < copyTasks.length; i++) {\n                        if (event && event[IMMEDIATE_PROPAGATION_SYMBOL] === true) {\n                            break;\n                        }\n                        invokeTask(copyTasks[i], target, event);\n                    }\n                }\n            }\n        };\n        // global shared zoneAwareCallback to handle all event callback with capture = true\n        const globalZoneAwareCaptureCallback = function (event) {\n            // https://github.com/angular/zone.js/issues/911, in IE, sometimes\n            // event will be undefined, so we need to use window.event\n            event = event || _global.event;\n            if (!event) {\n                return;\n            }\n            // event.target is needed for Samsung TV and SourceBuffer\n            // || global is needed https://github.com/angular/zone.js/issues/190\n            const target = this || event.target || _global;\n            const tasks = target[zoneSymbolEventNames$1[event.type][TRUE_STR]];\n            if (tasks) {\n                // invoke all tasks which attached to current target with given event.type and capture = false\n                // for performance concern, if task.length === 1, just invoke\n                if (tasks.length === 1) {\n                    invokeTask(tasks[0], target, event);\n                }\n                else {\n                    // https://github.com/angular/zone.js/issues/836\n                    // copy the tasks array before invoke, to avoid\n                    // the callback will remove itself or other listener\n                    const copyTasks = tasks.slice();\n                    for (let i = 0; i < copyTasks.length; i++) {\n                        if (event && event[IMMEDIATE_PROPAGATION_SYMBOL] === true) {\n                            break;\n                        }\n                        invokeTask(copyTasks[i], target, event);\n                    }\n                }\n            }\n        };\n        function patchEventTargetMethods(obj, patchOptions) {\n            if (!obj) {\n                return false;\n            }\n            let useGlobalCallback = true;\n            if (patchOptions && patchOptions.useG !== undefined) {\n                useGlobalCallback = patchOptions.useG;\n            }\n            const validateHandler = patchOptions && patchOptions.vh;\n            let checkDuplicate = true;\n            if (patchOptions && patchOptions.chkDup !== undefined) {\n                checkDuplicate = patchOptions.chkDup;\n            }\n            let returnTarget = false;\n            if (patchOptions && patchOptions.rt !== undefined) {\n                returnTarget = patchOptions.rt;\n            }\n            let proto = obj;\n            while (proto && !proto.hasOwnProperty(ADD_EVENT_LISTENER)) {\n                proto = ObjectGetPrototypeOf(proto);\n            }\n            if (!proto && obj[ADD_EVENT_LISTENER]) {\n                // somehow we did not find it, but we can see it. This happens on IE for Window properties.\n                proto = obj;\n            }\n            if (!proto) {\n                return false;\n            }\n            if (proto[zoneSymbolAddEventListener]) {\n                return false;\n            }\n            const eventNameToString = patchOptions && patchOptions.eventNameToString;\n            // a shared global taskData to pass data for scheduleEventTask\n            // so we do not need to create a new object just for pass some data\n            const taskData = {};\n            const nativeAddEventListener = proto[zoneSymbolAddEventListener] = proto[ADD_EVENT_LISTENER];\n            const nativeRemoveEventListener = proto[zoneSymbol(REMOVE_EVENT_LISTENER)] =\n                proto[REMOVE_EVENT_LISTENER];\n            const nativeListeners = proto[zoneSymbol(LISTENERS_EVENT_LISTENER)] =\n                proto[LISTENERS_EVENT_LISTENER];\n            const nativeRemoveAllListeners = proto[zoneSymbol(REMOVE_ALL_LISTENERS_EVENT_LISTENER)] =\n                proto[REMOVE_ALL_LISTENERS_EVENT_LISTENER];\n            let nativePrependEventListener;\n            if (patchOptions && patchOptions.prepend) {\n                nativePrependEventListener = proto[zoneSymbol(patchOptions.prepend)] =\n                    proto[patchOptions.prepend];\n            }\n            /**\n             * This util function will build an option object with passive option\n             * to handle all possible input from the user.\n             */\n            function buildEventListenerOptions(options, passive) {\n                if (!passiveSupported && typeof options === 'object' && options) {\n                    // doesn't support passive but user want to pass an object as options.\n                    // this will not work on some old browser, so we just pass a boolean\n                    // as useCapture parameter\n                    return !!options.capture;\n                }\n                if (!passiveSupported || !passive) {\n                    return options;\n                }\n                if (typeof options === 'boolean') {\n                    return { capture: options, passive: true };\n                }\n                if (!options) {\n                    return { passive: true };\n                }\n                if (typeof options === 'object' && options.passive !== false) {\n                    return Object.assign(Object.assign({}, options), { passive: true });\n                }\n                return options;\n            }\n            const customScheduleGlobal = function (task) {\n                // if there is already a task for the eventName + capture,\n                // just return, because we use the shared globalZoneAwareCallback here.\n                if (taskData.isExisting) {\n                    return;\n                }\n                return nativeAddEventListener.call(taskData.target, taskData.eventName, taskData.capture ? globalZoneAwareCaptureCallback : globalZoneAwareCallback, taskData.options);\n            };\n            const customCancelGlobal = function (task) {\n                // if task is not marked as isRemoved, this call is directly\n                // from Zone.prototype.cancelTask, we should remove the task\n                // from tasksList of target first\n                if (!task.isRemoved) {\n                    const symbolEventNames = zoneSymbolEventNames$1[task.eventName];\n                    let symbolEventName;\n                    if (symbolEventNames) {\n                        symbolEventName = symbolEventNames[task.capture ? TRUE_STR : FALSE_STR];\n                    }\n                    const existingTasks = symbolEventName && task.target[symbolEventName];\n                    if (existingTasks) {\n                        for (let i = 0; i < existingTasks.length; i++) {\n                            const existingTask = existingTasks[i];\n                            if (existingTask === task) {\n                                existingTasks.splice(i, 1);\n                                // set isRemoved to data for faster invokeTask check\n                                task.isRemoved = true;\n                                if (existingTasks.length === 0) {\n                                    // all tasks for the eventName + capture have gone,\n                                    // remove globalZoneAwareCallback and remove the task cache from target\n                                    task.allRemoved = true;\n                                    task.target[symbolEventName] = null;\n                                }\n                                break;\n                            }\n                        }\n                    }\n                }\n                // if all tasks for the eventName + capture have gone,\n                // we will really remove the global event callback,\n                // if not, return\n                if (!task.allRemoved) {\n                    return;\n                }\n                return nativeRemoveEventListener.call(task.target, task.eventName, task.capture ? globalZoneAwareCaptureCallback : globalZoneAwareCallback, task.options);\n            };\n            const customScheduleNonGlobal = function (task) {\n                return nativeAddEventListener.call(taskData.target, taskData.eventName, task.invoke, taskData.options);\n            };\n            const customSchedulePrepend = function (task) {\n                return nativePrependEventListener.call(taskData.target, taskData.eventName, task.invoke, taskData.options);\n            };\n            const customCancelNonGlobal = function (task) {\n                return nativeRemoveEventListener.call(task.target, task.eventName, task.invoke, task.options);\n            };\n            const customSchedule = useGlobalCallback ? customScheduleGlobal : customScheduleNonGlobal;\n            const customCancel = useGlobalCallback ? customCancelGlobal : customCancelNonGlobal;\n            const compareTaskCallbackVsDelegate = function (task, delegate) {\n                const typeOfDelegate = typeof delegate;\n                return (typeOfDelegate === 'function' && task.callback === delegate) ||\n                    (typeOfDelegate === 'object' && task.originalDelegate === delegate);\n            };\n            const compare = (patchOptions && patchOptions.diff) ? patchOptions.diff : compareTaskCallbackVsDelegate;\n            const blackListedEvents = Zone[zoneSymbol('BLACK_LISTED_EVENTS')];\n            const passiveEvents = _global[zoneSymbol('PASSIVE_EVENTS')];\n            const makeAddListener = function (nativeListener, addSource, customScheduleFn, customCancelFn, returnTarget = false, prepend = false) {\n                return function () {\n                    const target = this || _global;\n                    let eventName = arguments[0];\n                    if (patchOptions && patchOptions.transferEventName) {\n                        eventName = patchOptions.transferEventName(eventName);\n                    }\n                    let delegate = arguments[1];\n                    if (!delegate) {\n                        return nativeListener.apply(this, arguments);\n                    }\n                    if (isNode && eventName === 'uncaughtException') {\n                        // don't patch uncaughtException of nodejs to prevent endless loop\n                        return nativeListener.apply(this, arguments);\n                    }\n                    // don't create the bind delegate function for handleEvent\n                    // case here to improve addEventListener performance\n                    // we will create the bind delegate when invoke\n                    let isHandleEvent = false;\n                    if (typeof delegate !== 'function') {\n                        if (!delegate.handleEvent) {\n                            return nativeListener.apply(this, arguments);\n                        }\n                        isHandleEvent = true;\n                    }\n                    if (validateHandler && !validateHandler(nativeListener, delegate, target, arguments)) {\n                        return;\n                    }\n                    const passive = passiveSupported && !!passiveEvents && passiveEvents.indexOf(eventName) !== -1;\n                    const options = buildEventListenerOptions(arguments[2], passive);\n                    if (blackListedEvents) {\n                        // check black list\n                        for (let i = 0; i < blackListedEvents.length; i++) {\n                            if (eventName === blackListedEvents[i]) {\n                                if (passive) {\n                                    return nativeListener.call(target, eventName, delegate, options);\n                                }\n                                else {\n                                    return nativeListener.apply(this, arguments);\n                                }\n                            }\n                        }\n                    }\n                    const capture = !options ? false : typeof options === 'boolean' ? true : options.capture;\n                    const once = options && typeof options === 'object' ? options.once : false;\n                    const zone = Zone.current;\n                    let symbolEventNames = zoneSymbolEventNames$1[eventName];\n                    if (!symbolEventNames) {\n                        prepareEventNames(eventName, eventNameToString);\n                        symbolEventNames = zoneSymbolEventNames$1[eventName];\n                    }\n                    const symbolEventName = symbolEventNames[capture ? TRUE_STR : FALSE_STR];\n                    let existingTasks = target[symbolEventName];\n                    let isExisting = false;\n                    if (existingTasks) {\n                        // already have task registered\n                        isExisting = true;\n                        if (checkDuplicate) {\n                            for (let i = 0; i < existingTasks.length; i++) {\n                                if (compare(existingTasks[i], delegate)) {\n                                    // same callback, same capture, same event name, just return\n                                    return;\n                                }\n                            }\n                        }\n                    }\n                    else {\n                        existingTasks = target[symbolEventName] = [];\n                    }\n                    let source;\n                    const constructorName = target.constructor['name'];\n                    const targetSource = globalSources[constructorName];\n                    if (targetSource) {\n                        source = targetSource[eventName];\n                    }\n                    if (!source) {\n                        source = constructorName + addSource +\n                            (eventNameToString ? eventNameToString(eventName) : eventName);\n                    }\n                    // do not create a new object as task.data to pass those things\n                    // just use the global shared one\n                    taskData.options = options;\n                    if (once) {\n                        // if addEventListener with once options, we don't pass it to\n                        // native addEventListener, instead we keep the once setting\n                        // and handle ourselves.\n                        taskData.options.once = false;\n                    }\n                    taskData.target = target;\n                    taskData.capture = capture;\n                    taskData.eventName = eventName;\n                    taskData.isExisting = isExisting;\n                    const data = useGlobalCallback ? OPTIMIZED_ZONE_EVENT_TASK_DATA : undefined;\n                    // keep taskData into data to allow onScheduleEventTask to access the task information\n                    if (data) {\n                        data.taskData = taskData;\n                    }\n                    const task = zone.scheduleEventTask(source, delegate, data, customScheduleFn, customCancelFn);\n                    // should clear taskData.target to avoid memory leak\n                    // issue, https://github.com/angular/angular/issues/20442\n                    taskData.target = null;\n                    // need to clear up taskData because it is a global object\n                    if (data) {\n                        data.taskData = null;\n                    }\n                    // have to save those information to task in case\n                    // application may call task.zone.cancelTask() directly\n                    if (once) {\n                        options.once = true;\n                    }\n                    if (!(!passiveSupported && typeof task.options === 'boolean')) {\n                        // if not support passive, and we pass an option object\n                        // to addEventListener, we should save the options to task\n                        task.options = options;\n                    }\n                    task.target = target;\n                    task.capture = capture;\n                    task.eventName = eventName;\n                    if (isHandleEvent) {\n                        // save original delegate for compare to check duplicate\n                        task.originalDelegate = delegate;\n                    }\n                    if (!prepend) {\n                        existingTasks.push(task);\n                    }\n                    else {\n                        existingTasks.unshift(task);\n                    }\n                    if (returnTarget) {\n                        return target;\n                    }\n                };\n            };\n            proto[ADD_EVENT_LISTENER] = makeAddListener(nativeAddEventListener, ADD_EVENT_LISTENER_SOURCE, customSchedule, customCancel, returnTarget);\n            if (nativePrependEventListener) {\n                proto[PREPEND_EVENT_LISTENER] = makeAddListener(nativePrependEventListener, PREPEND_EVENT_LISTENER_SOURCE, customSchedulePrepend, customCancel, returnTarget, true);\n            }\n            proto[REMOVE_EVENT_LISTENER] = function () {\n                const target = this || _global;\n                let eventName = arguments[0];\n                if (patchOptions && patchOptions.transferEventName) {\n                    eventName = patchOptions.transferEventName(eventName);\n                }\n                const options = arguments[2];\n                const capture = !options ? false : typeof options === 'boolean' ? true : options.capture;\n                const delegate = arguments[1];\n                if (!delegate) {\n                    return nativeRemoveEventListener.apply(this, arguments);\n                }\n                if (validateHandler &&\n                    !validateHandler(nativeRemoveEventListener, delegate, target, arguments)) {\n                    return;\n                }\n                const symbolEventNames = zoneSymbolEventNames$1[eventName];\n                let symbolEventName;\n                if (symbolEventNames) {\n                    symbolEventName = symbolEventNames[capture ? TRUE_STR : FALSE_STR];\n                }\n                const existingTasks = symbolEventName && target[symbolEventName];\n                if (existingTasks) {\n                    for (let i = 0; i < existingTasks.length; i++) {\n                        const existingTask = existingTasks[i];\n                        if (compare(existingTask, delegate)) {\n                            existingTasks.splice(i, 1);\n                            // set isRemoved to data for faster invokeTask check\n                            existingTask.isRemoved = true;\n                            if (existingTasks.length === 0) {\n                                // all tasks for the eventName + capture have gone,\n                                // remove globalZoneAwareCallback and remove the task cache from target\n                                existingTask.allRemoved = true;\n                                target[symbolEventName] = null;\n                                // in the target, we have an event listener which is added by on_property\n                                // such as target.onclick = function() {}, so we need to clear this internal\n                                // property too if all delegates all removed\n                                if (typeof eventName === 'string') {\n                                    const onPropertySymbol = ZONE_SYMBOL_PREFIX + 'ON_PROPERTY' + eventName;\n                                    target[onPropertySymbol] = null;\n                                }\n                            }\n                            existingTask.zone.cancelTask(existingTask);\n                            if (returnTarget) {\n                                return target;\n                            }\n                            return;\n                        }\n                    }\n                }\n                // issue 930, didn't find the event name or callback\n                // from zone kept existingTasks, the callback maybe\n                // added outside of zone, we need to call native removeEventListener\n                // to try to remove it.\n                return nativeRemoveEventListener.apply(this, arguments);\n            };\n            proto[LISTENERS_EVENT_LISTENER] = function () {\n                const target = this || _global;\n                let eventName = arguments[0];\n                if (patchOptions && patchOptions.transferEventName) {\n                    eventName = patchOptions.transferEventName(eventName);\n                }\n                const listeners = [];\n                const tasks = findEventTasks(target, eventNameToString ? eventNameToString(eventName) : eventName);\n                for (let i = 0; i < tasks.length; i++) {\n                    const task = tasks[i];\n                    let delegate = task.originalDelegate ? task.originalDelegate : task.callback;\n                    listeners.push(delegate);\n                }\n                return listeners;\n            };\n            proto[REMOVE_ALL_LISTENERS_EVENT_LISTENER] = function () {\n                const target = this || _global;\n                let eventName = arguments[0];\n                if (!eventName) {\n                    const keys = Object.keys(target);\n                    for (let i = 0; i < keys.length; i++) {\n                        const prop = keys[i];\n                        const match = EVENT_NAME_SYMBOL_REGX.exec(prop);\n                        let evtName = match && match[1];\n                        // in nodejs EventEmitter, removeListener event is\n                        // used for monitoring the removeListener call,\n                        // so just keep removeListener eventListener until\n                        // all other eventListeners are removed\n                        if (evtName && evtName !== 'removeListener') {\n                            this[REMOVE_ALL_LISTENERS_EVENT_LISTENER].call(this, evtName);\n                        }\n                    }\n                    // remove removeListener listener finally\n                    this[REMOVE_ALL_LISTENERS_EVENT_LISTENER].call(this, 'removeListener');\n                }\n                else {\n                    if (patchOptions && patchOptions.transferEventName) {\n                        eventName = patchOptions.transferEventName(eventName);\n                    }\n                    const symbolEventNames = zoneSymbolEventNames$1[eventName];\n                    if (symbolEventNames) {\n                        const symbolEventName = symbolEventNames[FALSE_STR];\n                        const symbolCaptureEventName = symbolEventNames[TRUE_STR];\n                        const tasks = target[symbolEventName];\n                        const captureTasks = target[symbolCaptureEventName];\n                        if (tasks) {\n                            const removeTasks = tasks.slice();\n                            for (let i = 0; i < removeTasks.length; i++) {\n                                const task = removeTasks[i];\n                                let delegate = task.originalDelegate ? task.originalDelegate : task.callback;\n                                this[REMOVE_EVENT_LISTENER].call(this, eventName, delegate, task.options);\n                            }\n                        }\n                        if (captureTasks) {\n                            const removeTasks = captureTasks.slice();\n                            for (let i = 0; i < removeTasks.length; i++) {\n                                const task = removeTasks[i];\n                                let delegate = task.originalDelegate ? task.originalDelegate : task.callback;\n                                this[REMOVE_EVENT_LISTENER].call(this, eventName, delegate, task.options);\n                            }\n                        }\n                    }\n                }\n                if (returnTarget) {\n                    return this;\n                }\n            };\n            // for native toString patch\n            attachOriginToPatched(proto[ADD_EVENT_LISTENER], nativeAddEventListener);\n            attachOriginToPatched(proto[REMOVE_EVENT_LISTENER], nativeRemoveEventListener);\n            if (nativeRemoveAllListeners) {\n                attachOriginToPatched(proto[REMOVE_ALL_LISTENERS_EVENT_LISTENER], nativeRemoveAllListeners);\n            }\n            if (nativeListeners) {\n                attachOriginToPatched(proto[LISTENERS_EVENT_LISTENER], nativeListeners);\n            }\n            return true;\n        }\n        let results = [];\n        for (let i = 0; i < apis.length; i++) {\n            results[i] = patchEventTargetMethods(apis[i], patchOptions);\n        }\n        return results;\n    }\n    function findEventTasks(target, eventName) {\n        if (!eventName) {\n            const foundTasks = [];\n            for (let prop in target) {\n                const match = EVENT_NAME_SYMBOL_REGX.exec(prop);\n                let evtName = match && match[1];\n                if (evtName && (!eventName || evtName === eventName)) {\n                    const tasks = target[prop];\n                    if (tasks) {\n                        for (let i = 0; i < tasks.length; i++) {\n                            foundTasks.push(tasks[i]);\n                        }\n                    }\n                }\n            }\n            return foundTasks;\n        }\n        let symbolEventName = zoneSymbolEventNames$1[eventName];\n        if (!symbolEventName) {\n            prepareEventNames(eventName);\n            symbolEventName = zoneSymbolEventNames$1[eventName];\n        }\n        const captureFalseTasks = target[symbolEventName[FALSE_STR]];\n        const captureTrueTasks = target[symbolEventName[TRUE_STR]];\n        if (!captureFalseTasks) {\n            return captureTrueTasks ? captureTrueTasks.slice() : [];\n        }\n        else {\n            return captureTrueTasks ? captureFalseTasks.concat(captureTrueTasks) :\n                captureFalseTasks.slice();\n        }\n    }\n    function patchEventPrototype(global, api) {\n        const Event = global['Event'];\n        if (Event && Event.prototype) {\n            api.patchMethod(Event.prototype, 'stopImmediatePropagation', (delegate) => function (self, args) {\n                self[IMMEDIATE_PROPAGATION_SYMBOL] = true;\n                // we need to call the native stopImmediatePropagation\n                // in case in some hybrid application, some part of\n                // application will be controlled by zone, some are not\n                delegate && delegate.apply(self, args);\n            });\n        }\n    }\n\n    /**\n     * @license\n     * Copyright Google Inc. All Rights Reserved.\n     *\n     * Use of this source code is governed by an MIT-style license that can be\n     * found in the LICENSE file at https://angular.io/license\n     */\n    function patchCallbacks(api, target, targetName, method, callbacks) {\n        const symbol = Zone.__symbol__(method);\n        if (target[symbol]) {\n            return;\n        }\n        const nativeDelegate = target[symbol] = target[method];\n        target[method] = function (name, opts, options) {\n            if (opts && opts.prototype) {\n                callbacks.forEach(function (callback) {\n                    const source = `${targetName}.${method}::` + callback;\n                    const prototype = opts.prototype;\n                    if (prototype.hasOwnProperty(callback)) {\n                        const descriptor = api.ObjectGetOwnPropertyDescriptor(prototype, callback);\n                        if (descriptor && descriptor.value) {\n                            descriptor.value = api.wrapWithCurrentZone(descriptor.value, source);\n                            api._redefineProperty(opts.prototype, callback, descriptor);\n                        }\n                        else if (prototype[callback]) {\n                            prototype[callback] = api.wrapWithCurrentZone(prototype[callback], source);\n                        }\n                    }\n                    else if (prototype[callback]) {\n                        prototype[callback] = api.wrapWithCurrentZone(prototype[callback], source);\n                    }\n                });\n            }\n            return nativeDelegate.call(target, name, opts, options);\n        };\n        api.attachOriginToPatched(target[method], nativeDelegate);\n    }\n\n    /**\n     * @license\n     * Copyright Google Inc. All Rights Reserved.\n     *\n     * Use of this source code is governed by an MIT-style license that can be\n     * found in the LICENSE file at https://angular.io/license\n     */\n    const globalEventHandlersEventNames = [\n        'abort',\n        'animationcancel',\n        'animationend',\n        'animationiteration',\n        'auxclick',\n        'beforeinput',\n        'blur',\n        'cancel',\n        'canplay',\n        'canplaythrough',\n        'change',\n        'compositionstart',\n        'compositionupdate',\n        'compositionend',\n        'cuechange',\n        'click',\n        'close',\n        'contextmenu',\n        'curechange',\n        'dblclick',\n        'drag',\n        'dragend',\n        'dragenter',\n        'dragexit',\n        'dragleave',\n        'dragover',\n        'drop',\n        'durationchange',\n        'emptied',\n        'ended',\n        'error',\n        'focus',\n        'focusin',\n        'focusout',\n        'gotpointercapture',\n        'input',\n        'invalid',\n        'keydown',\n        'keypress',\n        'keyup',\n        'load',\n        'loadstart',\n        'loadeddata',\n        'loadedmetadata',\n        'lostpointercapture',\n        'mousedown',\n        'mouseenter',\n        'mouseleave',\n        'mousemove',\n        'mouseout',\n        'mouseover',\n        'mouseup',\n        'mousewheel',\n        'orientationchange',\n        'pause',\n        'play',\n        'playing',\n        'pointercancel',\n        'pointerdown',\n        'pointerenter',\n        'pointerleave',\n        'pointerlockchange',\n        'mozpointerlockchange',\n        'webkitpointerlockerchange',\n        'pointerlockerror',\n        'mozpointerlockerror',\n        'webkitpointerlockerror',\n        'pointermove',\n        'pointout',\n        'pointerover',\n        'pointerup',\n        'progress',\n        'ratechange',\n        'reset',\n        'resize',\n        'scroll',\n        'seeked',\n        'seeking',\n        'select',\n        'selectionchange',\n        'selectstart',\n        'show',\n        'sort',\n        'stalled',\n        'submit',\n        'suspend',\n        'timeupdate',\n        'volumechange',\n        'touchcancel',\n        'touchmove',\n        'touchstart',\n        'touchend',\n        'transitioncancel',\n        'transitionend',\n        'waiting',\n        'wheel'\n    ];\n    const documentEventNames = [\n        'afterscriptexecute', 'beforescriptexecute', 'DOMContentLoaded', 'freeze', 'fullscreenchange',\n        'mozfullscreenchange', 'webkitfullscreenchange', 'msfullscreenchange', 'fullscreenerror',\n        'mozfullscreenerror', 'webkitfullscreenerror', 'msfullscreenerror', 'readystatechange',\n        'visibilitychange', 'resume'\n    ];\n    const windowEventNames = [\n        'absolutedeviceorientation',\n        'afterinput',\n        'afterprint',\n        'appinstalled',\n        'beforeinstallprompt',\n        'beforeprint',\n        'beforeunload',\n        'devicelight',\n        'devicemotion',\n        'deviceorientation',\n        'deviceorientationabsolute',\n        'deviceproximity',\n        'hashchange',\n        'languagechange',\n        'message',\n        'mozbeforepaint',\n        'offline',\n        'online',\n        'paint',\n        'pageshow',\n        'pagehide',\n        'popstate',\n        'rejectionhandled',\n        'storage',\n        'unhandledrejection',\n        'unload',\n        'userproximity',\n        'vrdisplayconnected',\n        'vrdisplaydisconnected',\n        'vrdisplaypresentchange'\n    ];\n    const htmlElementEventNames = [\n        'beforecopy', 'beforecut', 'beforepaste', 'copy', 'cut', 'paste', 'dragstart', 'loadend',\n        'animationstart', 'search', 'transitionrun', 'transitionstart', 'webkitanimationend',\n        'webkitanimationiteration', 'webkitanimationstart', 'webkittransitionend'\n    ];\n    const mediaElementEventNames = ['encrypted', 'waitingforkey', 'msneedkey', 'mozinterruptbegin', 'mozinterruptend'];\n    const ieElementEventNames = [\n        'activate',\n        'afterupdate',\n        'ariarequest',\n        'beforeactivate',\n        'beforedeactivate',\n        'beforeeditfocus',\n        'beforeupdate',\n        'cellchange',\n        'controlselect',\n        'dataavailable',\n        'datasetchanged',\n        'datasetcomplete',\n        'errorupdate',\n        'filterchange',\n        'layoutcomplete',\n        'losecapture',\n        'move',\n        'moveend',\n        'movestart',\n        'propertychange',\n        'resizeend',\n        'resizestart',\n        'rowenter',\n        'rowexit',\n        'rowsdelete',\n        'rowsinserted',\n        'command',\n        'compassneedscalibration',\n        'deactivate',\n        'help',\n        'mscontentzoom',\n        'msmanipulationstatechanged',\n        'msgesturechange',\n        'msgesturedoubletap',\n        'msgestureend',\n        'msgesturehold',\n        'msgesturestart',\n        'msgesturetap',\n        'msgotpointercapture',\n        'msinertiastart',\n        'mslostpointercapture',\n        'mspointercancel',\n        'mspointerdown',\n        'mspointerenter',\n        'mspointerhover',\n        'mspointerleave',\n        'mspointermove',\n        'mspointerout',\n        'mspointerover',\n        'mspointerup',\n        'pointerout',\n        'mssitemodejumplistitemremoved',\n        'msthumbnailclick',\n        'stop',\n        'storagecommit'\n    ];\n    const webglEventNames = ['webglcontextrestored', 'webglcontextlost', 'webglcontextcreationerror'];\n    const formEventNames = ['autocomplete', 'autocompleteerror'];\n    const detailEventNames = ['toggle'];\n    const frameEventNames = ['load'];\n    const frameSetEventNames = ['blur', 'error', 'focus', 'load', 'resize', 'scroll', 'messageerror'];\n    const marqueeEventNames = ['bounce', 'finish', 'start'];\n    const XMLHttpRequestEventNames = [\n        'loadstart', 'progress', 'abort', 'error', 'load', 'progress', 'timeout', 'loadend',\n        'readystatechange'\n    ];\n    const IDBIndexEventNames = ['upgradeneeded', 'complete', 'abort', 'success', 'error', 'blocked', 'versionchange', 'close'];\n    const websocketEventNames = ['close', 'error', 'open', 'message'];\n    const workerEventNames = ['error', 'message'];\n    const eventNames = globalEventHandlersEventNames.concat(webglEventNames, formEventNames, detailEventNames, documentEventNames, windowEventNames, htmlElementEventNames, ieElementEventNames);\n    function filterProperties(target, onProperties, ignoreProperties) {\n        if (!ignoreProperties || ignoreProperties.length === 0) {\n            return onProperties;\n        }\n        const tip = ignoreProperties.filter(ip => ip.target === target);\n        if (!tip || tip.length === 0) {\n            return onProperties;\n        }\n        const targetIgnoreProperties = tip[0].ignoreProperties;\n        return onProperties.filter(op => targetIgnoreProperties.indexOf(op) === -1);\n    }\n    function patchFilteredProperties(target, onProperties, ignoreProperties, prototype) {\n        // check whether target is available, sometimes target will be undefined\n        // because different browser or some 3rd party plugin.\n        if (!target) {\n            return;\n        }\n        const filteredProperties = filterProperties(target, onProperties, ignoreProperties);\n        patchOnProperties(target, filteredProperties, prototype);\n    }\n    function propertyDescriptorPatch(api, _global) {\n        if (isNode && !isMix) {\n            return;\n        }\n        if (Zone[api.symbol('patchEvents')]) {\n            // events are already been patched by legacy patch.\n            return;\n        }\n        const supportsWebSocket = typeof WebSocket !== 'undefined';\n        const ignoreProperties = _global['__Zone_ignore_on_properties'];\n        // for browsers that we can patch the descriptor:  Chrome & Firefox\n        if (isBrowser) {\n            const internalWindow = window;\n            const ignoreErrorProperties = isIE ? [{ target: internalWindow, ignoreProperties: ['error'] }] : [];\n            // in IE/Edge, onProp not exist in window object, but in WindowPrototype\n            // so we need to pass WindowPrototype to check onProp exist or not\n            patchFilteredProperties(internalWindow, eventNames.concat(['messageerror']), ignoreProperties ? ignoreProperties.concat(ignoreErrorProperties) : ignoreProperties, ObjectGetPrototypeOf(internalWindow));\n            patchFilteredProperties(Document.prototype, eventNames, ignoreProperties);\n            if (typeof internalWindow['SVGElement'] !== 'undefined') {\n                patchFilteredProperties(internalWindow['SVGElement'].prototype, eventNames, ignoreProperties);\n            }\n            patchFilteredProperties(Element.prototype, eventNames, ignoreProperties);\n            patchFilteredProperties(HTMLElement.prototype, eventNames, ignoreProperties);\n            patchFilteredProperties(HTMLMediaElement.prototype, mediaElementEventNames, ignoreProperties);\n            patchFilteredProperties(HTMLFrameSetElement.prototype, windowEventNames.concat(frameSetEventNames), ignoreProperties);\n            patchFilteredProperties(HTMLBodyElement.prototype, windowEventNames.concat(frameSetEventNames), ignoreProperties);\n            patchFilteredProperties(HTMLFrameElement.prototype, frameEventNames, ignoreProperties);\n            patchFilteredProperties(HTMLIFrameElement.prototype, frameEventNames, ignoreProperties);\n            const HTMLMarqueeElement = internalWindow['HTMLMarqueeElement'];\n            if (HTMLMarqueeElement) {\n                patchFilteredProperties(HTMLMarqueeElement.prototype, marqueeEventNames, ignoreProperties);\n            }\n            const Worker = internalWindow['Worker'];\n            if (Worker) {\n                patchFilteredProperties(Worker.prototype, workerEventNames, ignoreProperties);\n            }\n        }\n        const XMLHttpRequest = _global['XMLHttpRequest'];\n        if (XMLHttpRequest) {\n            // XMLHttpRequest is not available in ServiceWorker, so we need to check here\n            patchFilteredProperties(XMLHttpRequest.prototype, XMLHttpRequestEventNames, ignoreProperties);\n        }\n        const XMLHttpRequestEventTarget = _global['XMLHttpRequestEventTarget'];\n        if (XMLHttpRequestEventTarget) {\n            patchFilteredProperties(XMLHttpRequestEventTarget && XMLHttpRequestEventTarget.prototype, XMLHttpRequestEventNames, ignoreProperties);\n        }\n        if (typeof IDBIndex !== 'undefined') {\n            patchFilteredProperties(IDBIndex.prototype, IDBIndexEventNames, ignoreProperties);\n            patchFilteredProperties(IDBRequest.prototype, IDBIndexEventNames, ignoreProperties);\n            patchFilteredProperties(IDBOpenDBRequest.prototype, IDBIndexEventNames, ignoreProperties);\n            patchFilteredProperties(IDBDatabase.prototype, IDBIndexEventNames, ignoreProperties);\n            patchFilteredProperties(IDBTransaction.prototype, IDBIndexEventNames, ignoreProperties);\n            patchFilteredProperties(IDBCursor.prototype, IDBIndexEventNames, ignoreProperties);\n        }\n        if (supportsWebSocket) {\n            patchFilteredProperties(WebSocket.prototype, websocketEventNames, ignoreProperties);\n        }\n    }\n\n    /**\n     * @license\n     * Copyright Google Inc. All Rights Reserved.\n     *\n     * Use of this source code is governed by an MIT-style license that can be\n     * found in the LICENSE file at https://angular.io/license\n     */\n    Zone.__load_patch('util', (global, Zone, api) => {\n        api.patchOnProperties = patchOnProperties;\n        api.patchMethod = patchMethod;\n        api.bindArguments = bindArguments;\n        api.patchMacroTask = patchMacroTask;\n        // In earlier version of zone.js (<0.9.0), we use env name `__zone_symbol__BLACK_LISTED_EVENTS` to\n        // define which events will not be patched by `Zone.js`.\n        // In newer version (>=0.9.0), we change the env name to `__zone_symbol__UNPATCHED_EVENTS` to keep\n        // the name consistent with angular repo.\n        // The  `__zone_symbol__BLACK_LISTED_EVENTS` is deprecated, but it is still be supported for\n        // backwards compatibility.\n        const SYMBOL_BLACK_LISTED_EVENTS = Zone.__symbol__('BLACK_LISTED_EVENTS');\n        const SYMBOL_UNPATCHED_EVENTS = Zone.__symbol__('UNPATCHED_EVENTS');\n        if (global[SYMBOL_UNPATCHED_EVENTS]) {\n            global[SYMBOL_BLACK_LISTED_EVENTS] = global[SYMBOL_UNPATCHED_EVENTS];\n        }\n        if (global[SYMBOL_BLACK_LISTED_EVENTS]) {\n            Zone[SYMBOL_BLACK_LISTED_EVENTS] = Zone[SYMBOL_UNPATCHED_EVENTS] =\n                global[SYMBOL_BLACK_LISTED_EVENTS];\n        }\n        api.patchEventPrototype = patchEventPrototype;\n        api.patchEventTarget = patchEventTarget;\n        api.isIEOrEdge = isIEOrEdge;\n        api.ObjectDefineProperty = ObjectDefineProperty;\n        api.ObjectGetOwnPropertyDescriptor = ObjectGetOwnPropertyDescriptor;\n        api.ObjectCreate = ObjectCreate;\n        api.ArraySlice = ArraySlice;\n        api.patchClass = patchClass;\n        api.wrapWithCurrentZone = wrapWithCurrentZone;\n        api.filterProperties = filterProperties;\n        api.attachOriginToPatched = attachOriginToPatched;\n        api._redefineProperty = Object.defineProperty;\n        api.patchCallbacks = patchCallbacks;\n        api.getGlobalObjects = () => ({ globalSources, zoneSymbolEventNames: zoneSymbolEventNames$1, eventNames, isBrowser, isMix, isNode, TRUE_STR,\n            FALSE_STR, ZONE_SYMBOL_PREFIX, ADD_EVENT_LISTENER_STR, REMOVE_EVENT_LISTENER_STR });\n    });\n\n    /**\n     * @license\n     * Copyright Google Inc. All Rights Reserved.\n     *\n     * Use of this source code is governed by an MIT-style license that can be\n     * found in the LICENSE file at https://angular.io/license\n     */\n    const taskSymbol = zoneSymbol('zoneTask');\n    function patchTimer(window, setName, cancelName, nameSuffix) {\n        let setNative = null;\n        let clearNative = null;\n        setName += nameSuffix;\n        cancelName += nameSuffix;\n        const tasksByHandleId = {};\n        function scheduleTask(task) {\n            const data = task.data;\n            function timer() {\n                try {\n                    task.invoke.apply(this, arguments);\n                }\n                finally {\n                    // issue-934, task will be cancelled\n                    // even it is a periodic task such as\n                    // setInterval\n                    if (!(task.data && task.data.isPeriodic)) {\n                        if (typeof data.handleId === 'number') {\n                            // in non-nodejs env, we remove timerId\n                            // from local cache\n                            delete tasksByHandleId[data.handleId];\n                        }\n                        else if (data.handleId) {\n                            // Node returns complex objects as handleIds\n                            // we remove task reference from timer object\n                            data.handleId[taskSymbol] = null;\n                        }\n                    }\n                }\n            }\n            data.args[0] = timer;\n            data.handleId = setNative.apply(window, data.args);\n            return task;\n        }\n        function clearTask(task) { return clearNative(task.data.handleId); }\n        setNative =\n            patchMethod(window, setName, (delegate) => function (self, args) {\n                if (typeof args[0] === 'function') {\n                    const options = {\n                        isPeriodic: nameSuffix === 'Interval',\n                        delay: (nameSuffix === 'Timeout' || nameSuffix === 'Interval') ? args[1] || 0 :\n                            undefined,\n                        args: args\n                    };\n                    const task = scheduleMacroTaskWithCurrentZone(setName, args[0], options, scheduleTask, clearTask);\n                    if (!task) {\n                        return task;\n                    }\n                    // Node.js must additionally support the ref and unref functions.\n                    const handle = task.data.handleId;\n                    if (typeof handle === 'number') {\n                        // for non nodejs env, we save handleId: task\n                        // mapping in local cache for clearTimeout\n                        tasksByHandleId[handle] = task;\n                    }\n                    else if (handle) {\n                        // for nodejs env, we save task\n                        // reference in timerId Object for clearTimeout\n                        handle[taskSymbol] = task;\n                    }\n                    // check whether handle is null, because some polyfill or browser\n                    // may return undefined from setTimeout/setInterval/setImmediate/requestAnimationFrame\n                    if (handle && handle.ref && handle.unref && typeof handle.ref === 'function' &&\n                        typeof handle.unref === 'function') {\n                        task.ref = handle.ref.bind(handle);\n                        task.unref = handle.unref.bind(handle);\n                    }\n                    if (typeof handle === 'number' || handle) {\n                        return handle;\n                    }\n                    return task;\n                }\n                else {\n                    // cause an error by calling it directly.\n                    return delegate.apply(window, args);\n                }\n            });\n        clearNative =\n            patchMethod(window, cancelName, (delegate) => function (self, args) {\n                const id = args[0];\n                let task;\n                if (typeof id === 'number') {\n                    // non nodejs env.\n                    task = tasksByHandleId[id];\n                }\n                else {\n                    // nodejs env.\n                    task = id && id[taskSymbol];\n                    // other environments.\n                    if (!task) {\n                        task = id;\n                    }\n                }\n                if (task && typeof task.type === 'string') {\n                    if (task.state !== 'notScheduled' &&\n                        (task.cancelFn && task.data.isPeriodic || task.runCount === 0)) {\n                        if (typeof id === 'number') {\n                            delete tasksByHandleId[id];\n                        }\n                        else if (id) {\n                            id[taskSymbol] = null;\n                        }\n                        // Do not cancel already canceled functions\n                        task.zone.cancelTask(task);\n                    }\n                }\n                else {\n                    // cause an error by calling it directly.\n                    delegate.apply(window, args);\n                }\n            });\n    }\n\n    /**\n     * @license\n     * Copyright Google Inc. All Rights Reserved.\n     *\n     * Use of this source code is governed by an MIT-style license that can be\n     * found in the LICENSE file at https://angular.io/license\n     */\n    function patchCustomElements(_global, api) {\n        const { isBrowser, isMix } = api.getGlobalObjects();\n        if ((!isBrowser && !isMix) || !_global['customElements'] || !('customElements' in _global)) {\n            return;\n        }\n        const callbacks = ['connectedCallback', 'disconnectedCallback', 'adoptedCallback', 'attributeChangedCallback'];\n        api.patchCallbacks(api, _global.customElements, 'customElements', 'define', callbacks);\n    }\n\n    /**\n     * @license\n     * Copyright Google Inc. All Rights Reserved.\n     *\n     * Use of this source code is governed by an MIT-style license that can be\n     * found in the LICENSE file at https://angular.io/license\n     */\n    function eventTargetPatch(_global, api) {\n        if (Zone[api.symbol('patchEventTarget')]) {\n            // EventTarget is already patched.\n            return;\n        }\n        const { eventNames, zoneSymbolEventNames, TRUE_STR, FALSE_STR, ZONE_SYMBOL_PREFIX } = api.getGlobalObjects();\n        //  predefine all __zone_symbol__ + eventName + true/false string\n        for (let i = 0; i < eventNames.length; i++) {\n            const eventName = eventNames[i];\n            const falseEventName = eventName + FALSE_STR;\n            const trueEventName = eventName + TRUE_STR;\n            const symbol = ZONE_SYMBOL_PREFIX + falseEventName;\n            const symbolCapture = ZONE_SYMBOL_PREFIX + trueEventName;\n            zoneSymbolEventNames[eventName] = {};\n            zoneSymbolEventNames[eventName][FALSE_STR] = symbol;\n            zoneSymbolEventNames[eventName][TRUE_STR] = symbolCapture;\n        }\n        const EVENT_TARGET = _global['EventTarget'];\n        if (!EVENT_TARGET || !EVENT_TARGET.prototype) {\n            return;\n        }\n        api.patchEventTarget(_global, [EVENT_TARGET && EVENT_TARGET.prototype]);\n        return true;\n    }\n    function patchEvent(global, api) {\n        api.patchEventPrototype(global, api);\n    }\n\n    /**\n     * @license\n     * Copyright Google Inc. All Rights Reserved.\n     *\n     * Use of this source code is governed by an MIT-style license that can be\n     * found in the LICENSE file at https://angular.io/license\n     */\n    Zone.__load_patch('legacy', (global) => {\n        const legacyPatch = global[Zone.__symbol__('legacyPatch')];\n        if (legacyPatch) {\n            legacyPatch();\n        }\n    });\n    Zone.__load_patch('timers', (global) => {\n        const set = 'set';\n        const clear = 'clear';\n        patchTimer(global, set, clear, 'Timeout');\n        patchTimer(global, set, clear, 'Interval');\n        patchTimer(global, set, clear, 'Immediate');\n    });\n    Zone.__load_patch('requestAnimationFrame', (global) => {\n        patchTimer(global, 'request', 'cancel', 'AnimationFrame');\n        patchTimer(global, 'mozRequest', 'mozCancel', 'AnimationFrame');\n        patchTimer(global, 'webkitRequest', 'webkitCancel', 'AnimationFrame');\n    });\n    Zone.__load_patch('blocking', (global, Zone) => {\n        const blockingMethods = ['alert', 'prompt', 'confirm'];\n        for (let i = 0; i < blockingMethods.length; i++) {\n            const name = blockingMethods[i];\n            patchMethod(global, name, (delegate, symbol, name) => {\n                return function (s, args) {\n                    return Zone.current.run(delegate, global, args, name);\n                };\n            });\n        }\n    });\n    Zone.__load_patch('EventTarget', (global, Zone, api) => {\n        patchEvent(global, api);\n        eventTargetPatch(global, api);\n        // patch XMLHttpRequestEventTarget's addEventListener/removeEventListener\n        const XMLHttpRequestEventTarget = global['XMLHttpRequestEventTarget'];\n        if (XMLHttpRequestEventTarget && XMLHttpRequestEventTarget.prototype) {\n            api.patchEventTarget(global, [XMLHttpRequestEventTarget.prototype]);\n        }\n        patchClass('MutationObserver');\n        patchClass('WebKitMutationObserver');\n        patchClass('IntersectionObserver');\n        patchClass('FileReader');\n    });\n    Zone.__load_patch('on_property', (global, Zone, api) => {\n        propertyDescriptorPatch(api, global);\n    });\n    Zone.__load_patch('customElements', (global, Zone, api) => {\n        patchCustomElements(global, api);\n    });\n    Zone.__load_patch('XHR', (global, Zone) => {\n        // Treat XMLHttpRequest as a macrotask.\n        patchXHR(global);\n        const XHR_TASK = zoneSymbol('xhrTask');\n        const XHR_SYNC = zoneSymbol('xhrSync');\n        const XHR_LISTENER = zoneSymbol('xhrListener');\n        const XHR_SCHEDULED = zoneSymbol('xhrScheduled');\n        const XHR_URL = zoneSymbol('xhrURL');\n        const XHR_ERROR_BEFORE_SCHEDULED = zoneSymbol('xhrErrorBeforeScheduled');\n        function patchXHR(window) {\n            const XMLHttpRequest = window['XMLHttpRequest'];\n            if (!XMLHttpRequest) {\n                // XMLHttpRequest is not available in service worker\n                return;\n            }\n            const XMLHttpRequestPrototype = XMLHttpRequest.prototype;\n            function findPendingTask(target) { return target[XHR_TASK]; }\n            let oriAddListener = XMLHttpRequestPrototype[ZONE_SYMBOL_ADD_EVENT_LISTENER];\n            let oriRemoveListener = XMLHttpRequestPrototype[ZONE_SYMBOL_REMOVE_EVENT_LISTENER];\n            if (!oriAddListener) {\n                const XMLHttpRequestEventTarget = window['XMLHttpRequestEventTarget'];\n                if (XMLHttpRequestEventTarget) {\n                    const XMLHttpRequestEventTargetPrototype = XMLHttpRequestEventTarget.prototype;\n                    oriAddListener = XMLHttpRequestEventTargetPrototype[ZONE_SYMBOL_ADD_EVENT_LISTENER];\n                    oriRemoveListener = XMLHttpRequestEventTargetPrototype[ZONE_SYMBOL_REMOVE_EVENT_LISTENER];\n                }\n            }\n            const READY_STATE_CHANGE = 'readystatechange';\n            const SCHEDULED = 'scheduled';\n            function scheduleTask(task) {\n                const data = task.data;\n                const target = data.target;\n                target[XHR_SCHEDULED] = false;\n                target[XHR_ERROR_BEFORE_SCHEDULED] = false;\n                // remove existing event listener\n                const listener = target[XHR_LISTENER];\n                if (!oriAddListener) {\n                    oriAddListener = target[ZONE_SYMBOL_ADD_EVENT_LISTENER];\n                    oriRemoveListener = target[ZONE_SYMBOL_REMOVE_EVENT_LISTENER];\n                }\n                if (listener) {\n                    oriRemoveListener.call(target, READY_STATE_CHANGE, listener);\n                }\n                const newListener = target[XHR_LISTENER] = () => {\n                    if (target.readyState === target.DONE) {\n                        // sometimes on some browsers XMLHttpRequest will fire onreadystatechange with\n                        // readyState=4 multiple times, so we need to check task state here\n                        if (!data.aborted && target[XHR_SCHEDULED] && task.state === SCHEDULED) {\n                            // check whether the xhr has registered onload listener\n                            // if that is the case, the task should invoke after all\n                            // onload listeners finish.\n                            const loadTasks = target[Zone.__symbol__('loadfalse')];\n                            if (loadTasks && loadTasks.length > 0) {\n                                const oriInvoke = task.invoke;\n                                task.invoke = function () {\n                                    // need to load the tasks again, because in other\n                                    // load listener, they may remove themselves\n                                    const loadTasks = target[Zone.__symbol__('loadfalse')];\n                                    for (let i = 0; i < loadTasks.length; i++) {\n                                        if (loadTasks[i] === task) {\n                                            loadTasks.splice(i, 1);\n                                        }\n                                    }\n                                    if (!data.aborted && task.state === SCHEDULED) {\n                                        oriInvoke.call(task);\n                                    }\n                                };\n                                loadTasks.push(task);\n                            }\n                            else {\n                                task.invoke();\n                            }\n                        }\n                        else if (!data.aborted && target[XHR_SCHEDULED] === false) {\n                            // error occurs when xhr.send()\n                            target[XHR_ERROR_BEFORE_SCHEDULED] = true;\n                        }\n                    }\n                };\n                oriAddListener.call(target, READY_STATE_CHANGE, newListener);\n                const storedTask = target[XHR_TASK];\n                if (!storedTask) {\n                    target[XHR_TASK] = task;\n                }\n                sendNative.apply(target, data.args);\n                target[XHR_SCHEDULED] = true;\n                return task;\n            }\n            function placeholderCallback() { }\n            function clearTask(task) {\n                const data = task.data;\n                // Note - ideally, we would call data.target.removeEventListener here, but it's too late\n                // to prevent it from firing. So instead, we store info for the event listener.\n                data.aborted = true;\n                return abortNative.apply(data.target, data.args);\n            }\n            const openNative = patchMethod(XMLHttpRequestPrototype, 'open', () => function (self, args) {\n                self[XHR_SYNC] = args[2] == false;\n                self[XHR_URL] = args[1];\n                return openNative.apply(self, args);\n            });\n            const XMLHTTPREQUEST_SOURCE = 'XMLHttpRequest.send';\n            const fetchTaskAborting = zoneSymbol('fetchTaskAborting');\n            const fetchTaskScheduling = zoneSymbol('fetchTaskScheduling');\n            const sendNative = patchMethod(XMLHttpRequestPrototype, 'send', () => function (self, args) {\n                if (Zone.current[fetchTaskScheduling] === true) {\n                    // a fetch is scheduling, so we are using xhr to polyfill fetch\n                    // and because we already schedule macroTask for fetch, we should\n                    // not schedule a macroTask for xhr again\n                    return sendNative.apply(self, args);\n                }\n                if (self[XHR_SYNC]) {\n                    // if the XHR is sync there is no task to schedule, just execute the code.\n                    return sendNative.apply(self, args);\n                }\n                else {\n                    const options = { target: self, url: self[XHR_URL], isPeriodic: false, args: args, aborted: false };\n                    const task = scheduleMacroTaskWithCurrentZone(XMLHTTPREQUEST_SOURCE, placeholderCallback, options, scheduleTask, clearTask);\n                    if (self && self[XHR_ERROR_BEFORE_SCHEDULED] === true && !options.aborted &&\n                        task.state === SCHEDULED) {\n                        // xhr request throw error when send\n                        // we should invoke task instead of leaving a scheduled\n                        // pending macroTask\n                        task.invoke();\n                    }\n                }\n            });\n            const abortNative = patchMethod(XMLHttpRequestPrototype, 'abort', () => function (self, args) {\n                const task = findPendingTask(self);\n                if (task && typeof task.type == 'string') {\n                    // If the XHR has already completed, do nothing.\n                    // If the XHR has already been aborted, do nothing.\n                    // Fix #569, call abort multiple times before done will cause\n                    // macroTask task count be negative number\n                    if (task.cancelFn == null || (task.data && task.data.aborted)) {\n                        return;\n                    }\n                    task.zone.cancelTask(task);\n                }\n                else if (Zone.current[fetchTaskAborting] === true) {\n                    // the abort is called from fetch polyfill, we need to call native abort of XHR.\n                    return abortNative.apply(self, args);\n                }\n                // Otherwise, we are trying to abort an XHR which has not yet been sent, so there is no\n                // task\n                // to cancel. Do nothing.\n            });\n        }\n    });\n    Zone.__load_patch('geolocation', (global) => {\n        /// GEO_LOCATION\n        if (global['navigator'] && global['navigator'].geolocation) {\n            patchPrototype(global['navigator'].geolocation, ['getCurrentPosition', 'watchPosition']);\n        }\n    });\n    Zone.__load_patch('PromiseRejectionEvent', (global, Zone) => {\n        // handle unhandled promise rejection\n        function findPromiseRejectionHandler(evtName) {\n            return function (e) {\n                const eventTasks = findEventTasks(global, evtName);\n                eventTasks.forEach(eventTask => {\n                    // windows has added unhandledrejection event listener\n                    // trigger the event listener\n                    const PromiseRejectionEvent = global['PromiseRejectionEvent'];\n                    if (PromiseRejectionEvent) {\n                        const evt = new PromiseRejectionEvent(evtName, { promise: e.promise, reason: e.rejection });\n                        eventTask.invoke(evt);\n                    }\n                });\n            };\n        }\n        if (global['PromiseRejectionEvent']) {\n            Zone[zoneSymbol('unhandledPromiseRejectionHandler')] =\n                findPromiseRejectionHandler('unhandledrejection');\n            Zone[zoneSymbol('rejectionHandledHandler')] =\n                findPromiseRejectionHandler('rejectionhandled');\n        }\n    });\n\n})));\n","// Copyright Joyent, Inc. and other Node contributors.\n//\n// Permission is hereby granted, free of charge, to any person obtaining a\n// copy of this software and associated documentation files (the\n// \"Software\"), to deal in the Software without restriction, including\n// without limitation the rights to use, copy, modify, merge, publish,\n// distribute, sublicense, and/or sell copies of the Software, and to permit\n// persons to whom the Software is furnished to do so, subject to the\n// following conditions:\n//\n// The above copyright notice and this permission notice shall be included\n// in all copies or substantial portions of the Software.\n//\n// THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS\n// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF\n// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN\n// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,\n// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR\n// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE\n// USE OR OTHER DEALINGS IN THE SOFTWARE.\n\n// a passthrough stream.\n// basically just the most minimal sort of Transform stream.\n// Every written chunk gets output as-is.\n\n'use strict'\n\nconst { ObjectSetPrototypeOf } = require('../../ours/primordials')\nmodule.exports = PassThrough\nconst Transform = require('./transform')\nObjectSetPrototypeOf(PassThrough.prototype, Transform.prototype)\nObjectSetPrototypeOf(PassThrough, Transform)\nfunction PassThrough(options) {\n  if (!(this instanceof PassThrough)) return new PassThrough(options)\n  Transform.call(this, options)\n}\nPassThrough.prototype._transform = function (chunk, encoding, cb) {\n  cb(null, chunk)\n}\n","'use strict'\n\nconst CustomStream = require('../stream')\nconst promises = require('../stream/promises')\nconst originalDestroy = CustomStream.Readable.destroy\nmodule.exports = CustomStream.Readable\n\n// Explicit export naming is needed for ESM\nmodule.exports._uint8ArrayToBuffer = CustomStream._uint8ArrayToBuffer\nmodule.exports._isUint8Array = CustomStream._isUint8Array\nmodule.exports.isDisturbed = CustomStream.isDisturbed\nmodule.exports.isErrored = CustomStream.isErrored\nmodule.exports.isReadable = CustomStream.isReadable\nmodule.exports.Readable = CustomStream.Readable\nmodule.exports.Writable = CustomStream.Writable\nmodule.exports.Duplex = CustomStream.Duplex\nmodule.exports.Transform = CustomStream.Transform\nmodule.exports.PassThrough = CustomStream.PassThrough\nmodule.exports.addAbortSignal = CustomStream.addAbortSignal\nmodule.exports.finished = CustomStream.finished\nmodule.exports.destroy = CustomStream.destroy\nmodule.exports.destroy = originalDestroy\nmodule.exports.pipeline = CustomStream.pipeline\nmodule.exports.compose = CustomStream.compose\nObject.defineProperty(CustomStream, 'promises', {\n  configurable: true,\n  enumerable: true,\n  get() {\n    return promises\n  }\n})\nmodule.exports.Stream = CustomStream.Stream\n\n// Allow default importing\nmodule.exports.default = module.exports\n","/*!\n * The buffer module from node.js, for the browser.\n *\n * @author   Feross Aboukhadijeh <http://feross.org>\n * @license  MIT\n */\n/* eslint-disable no-proto */\n\n'use strict'\n\nvar base64 = require('base64-js')\nvar ieee754 = require('ieee754')\nvar isArray = require('isarray')\n\nexports.Buffer = Buffer\nexports.SlowBuffer = SlowBuffer\nexports.INSPECT_MAX_BYTES = 50\n\n/**\n * If `Buffer.TYPED_ARRAY_SUPPORT`:\n *   === true    Use Uint8Array implementation (fastest)\n *   === false   Use Object implementation (most compatible, even IE6)\n *\n * Browsers that support typed arrays are IE 10+, Firefox 4+, Chrome 7+, Safari 5.1+,\n * Opera 11.6+, iOS 4.2+.\n *\n * Due to various browser bugs, sometimes the Object implementation will be used even\n * when the browser supports typed arrays.\n *\n * Note:\n *\n *   - Firefox 4-29 lacks support for adding new properties to `Uint8Array` instances,\n *     See: https://bugzilla.mozilla.org/show_bug.cgi?id=695438.\n *\n *   - Chrome 9-10 is missing the `TypedArray.prototype.subarray` function.\n *\n *   - IE10 has a broken `TypedArray.prototype.subarray` function which returns arrays of\n *     incorrect length in some situations.\n\n * We detect these buggy browsers and set `Buffer.TYPED_ARRAY_SUPPORT` to `false` so they\n * get the Object implementation, which is slower but behaves correctly.\n */\nBuffer.TYPED_ARRAY_SUPPORT = global.TYPED_ARRAY_SUPPORT !== undefined\n  ? global.TYPED_ARRAY_SUPPORT\n  : typedArraySupport()\n\n/*\n * Export kMaxLength after typed array support is determined.\n */\nexports.kMaxLength = kMaxLength()\n\nfunction typedArraySupport () {\n  try {\n    var arr = new Uint8Array(1)\n    arr.__proto__ = {__proto__: Uint8Array.prototype, foo: function () { return 42 }}\n    return arr.foo() === 42 && // typed array instances can be augmented\n        typeof arr.subarray === 'function' && // chrome 9-10 lack `subarray`\n        arr.subarray(1, 1).byteLength === 0 // ie10 has broken `subarray`\n  } catch (e) {\n    return false\n  }\n}\n\nfunction kMaxLength () {\n  return Buffer.TYPED_ARRAY_SUPPORT\n    ? 0x7fffffff\n    : 0x3fffffff\n}\n\nfunction createBuffer (that, length) {\n  if (kMaxLength() < length) {\n    throw new RangeError('Invalid typed array length')\n  }\n  if (Buffer.TYPED_ARRAY_SUPPORT) {\n    // Return an augmented `Uint8Array` instance, for best performance\n    that = new Uint8Array(length)\n    that.__proto__ = Buffer.prototype\n  } else {\n    // Fallback: Return an object instance of the Buffer class\n    if (that === null) {\n      that = new Buffer(length)\n    }\n    that.length = length\n  }\n\n  return that\n}\n\n/**\n * The Buffer constructor returns instances of `Uint8Array` that have their\n * prototype changed to `Buffer.prototype`. Furthermore, `Buffer` is a subclass of\n * `Uint8Array`, so the returned instances will have all the node `Buffer` methods\n * and the `Uint8Array` methods. Square bracket notation works as expected -- it\n * returns a single octet.\n *\n * The `Uint8Array` prototype remains unmodified.\n */\n\nfunction Buffer (arg, encodingOrOffset, length) {\n  if (!Buffer.TYPED_ARRAY_SUPPORT && !(this instanceof Buffer)) {\n    return new Buffer(arg, encodingOrOffset, length)\n  }\n\n  // Common case.\n  if (typeof arg === 'number') {\n    if (typeof encodingOrOffset === 'string') {\n      throw new Error(\n        'If encoding is specified then the first argument must be a string'\n      )\n    }\n    return allocUnsafe(this, arg)\n  }\n  return from(this, arg, encodingOrOffset, length)\n}\n\nBuffer.poolSize = 8192 // not used by this implementation\n\n// TODO: Legacy, not needed anymore. Remove in next major version.\nBuffer._augment = function (arr) {\n  arr.__proto__ = Buffer.prototype\n  return arr\n}\n\nfunction from (that, value, encodingOrOffset, length) {\n  if (typeof value === 'number') {\n    throw new TypeError('\"value\" argument must not be a number')\n  }\n\n  if (typeof ArrayBuffer !== 'undefined' && value instanceof ArrayBuffer) {\n    return fromArrayBuffer(that, value, encodingOrOffset, length)\n  }\n\n  if (typeof value === 'string') {\n    return fromString(that, value, encodingOrOffset)\n  }\n\n  return fromObject(that, value)\n}\n\n/**\n * Functionally equivalent to Buffer(arg, encoding) but throws a TypeError\n * if value is a number.\n * Buffer.from(str[, encoding])\n * Buffer.from(array)\n * Buffer.from(buffer)\n * Buffer.from(arrayBuffer[, byteOffset[, length]])\n **/\nBuffer.from = function (value, encodingOrOffset, length) {\n  return from(null, value, encodingOrOffset, length)\n}\n\nif (Buffer.TYPED_ARRAY_SUPPORT) {\n  Buffer.prototype.__proto__ = Uint8Array.prototype\n  Buffer.__proto__ = Uint8Array\n  if (typeof Symbol !== 'undefined' && Symbol.species &&\n      Buffer[Symbol.species] === Buffer) {\n    // Fix subarray() in ES2016. See: https://github.com/feross/buffer/pull/97\n    Object.defineProperty(Buffer, Symbol.species, {\n      value: null,\n      configurable: true\n    })\n  }\n}\n\nfunction assertSize (size) {\n  if (typeof size !== 'number') {\n    throw new TypeError('\"size\" argument must be a number')\n  } else if (size < 0) {\n    throw new RangeError('\"size\" argument must not be negative')\n  }\n}\n\nfunction alloc (that, size, fill, encoding) {\n  assertSize(size)\n  if (size <= 0) {\n    return createBuffer(that, size)\n  }\n  if (fill !== undefined) {\n    // Only pay attention to encoding if it's a string. This\n    // prevents accidentally sending in a number that would\n    // be interpretted as a start offset.\n    return typeof encoding === 'string'\n      ? createBuffer(that, size).fill(fill, encoding)\n      : createBuffer(that, size).fill(fill)\n  }\n  return createBuffer(that, size)\n}\n\n/**\n * Creates a new filled Buffer instance.\n * alloc(size[, fill[, encoding]])\n **/\nBuffer.alloc = function (size, fill, encoding) {\n  return alloc(null, size, fill, encoding)\n}\n\nfunction allocUnsafe (that, size) {\n  assertSize(size)\n  that = createBuffer(that, size < 0 ? 0 : checked(size) | 0)\n  if (!Buffer.TYPED_ARRAY_SUPPORT) {\n    for (var i = 0; i < size; ++i) {\n      that[i] = 0\n    }\n  }\n  return that\n}\n\n/**\n * Equivalent to Buffer(num), by default creates a non-zero-filled Buffer instance.\n * */\nBuffer.allocUnsafe = function (size) {\n  return allocUnsafe(null, size)\n}\n/**\n * Equivalent to SlowBuffer(num), by default creates a non-zero-filled Buffer instance.\n */\nBuffer.allocUnsafeSlow = function (size) {\n  return allocUnsafe(null, size)\n}\n\nfunction fromString (that, string, encoding) {\n  if (typeof encoding !== 'string' || encoding === '') {\n    encoding = 'utf8'\n  }\n\n  if (!Buffer.isEncoding(encoding)) {\n    throw new TypeError('\"encoding\" must be a valid string encoding')\n  }\n\n  var length = byteLength(string, encoding) | 0\n  that = createBuffer(that, length)\n\n  var actual = that.write(string, encoding)\n\n  if (actual !== length) {\n    // Writing a hex string, for example, that contains invalid characters will\n    // cause everything after the first invalid character to be ignored. (e.g.\n    // 'abxxcd' will be treated as 'ab')\n    that = that.slice(0, actual)\n  }\n\n  return that\n}\n\nfunction fromArrayLike (that, array) {\n  var length = array.length < 0 ? 0 : checked(array.length) | 0\n  that = createBuffer(that, length)\n  for (var i = 0; i < length; i += 1) {\n    that[i] = array[i] & 255\n  }\n  return that\n}\n\nfunction fromArrayBuffer (that, array, byteOffset, length) {\n  array.byteLength // this throws if `array` is not a valid ArrayBuffer\n\n  if (byteOffset < 0 || array.byteLength < byteOffset) {\n    throw new RangeError('\\'offset\\' is out of bounds')\n  }\n\n  if (array.byteLength < byteOffset + (length || 0)) {\n    throw new RangeError('\\'length\\' is out of bounds')\n  }\n\n  if (byteOffset === undefined && length === undefined) {\n    array = new Uint8Array(array)\n  } else if (length === undefined) {\n    array = new Uint8Array(array, byteOffset)\n  } else {\n    array = new Uint8Array(array, byteOffset, length)\n  }\n\n  if (Buffer.TYPED_ARRAY_SUPPORT) {\n    // Return an augmented `Uint8Array` instance, for best performance\n    that = array\n    that.__proto__ = Buffer.prototype\n  } else {\n    // Fallback: Return an object instance of the Buffer class\n    that = fromArrayLike(that, array)\n  }\n  return that\n}\n\nfunction fromObject (that, obj) {\n  if (Buffer.isBuffer(obj)) {\n    var len = checked(obj.length) | 0\n    that = createBuffer(that, len)\n\n    if (that.length === 0) {\n      return that\n    }\n\n    obj.copy(that, 0, 0, len)\n    return that\n  }\n\n  if (obj) {\n    if ((typeof ArrayBuffer !== 'undefined' &&\n        obj.buffer instanceof ArrayBuffer) || 'length' in obj) {\n      if (typeof obj.length !== 'number' || isnan(obj.length)) {\n        return createBuffer(that, 0)\n      }\n      return fromArrayLike(that, obj)\n    }\n\n    if (obj.type === 'Buffer' && isArray(obj.data)) {\n      return fromArrayLike(that, obj.data)\n    }\n  }\n\n  throw new TypeError('First argument must be a string, Buffer, ArrayBuffer, Array, or array-like object.')\n}\n\nfunction checked (length) {\n  // Note: cannot use `length < kMaxLength()` here because that fails when\n  // length is NaN (which is otherwise coerced to zero.)\n  if (length >= kMaxLength()) {\n    throw new RangeError('Attempt to allocate Buffer larger than maximum ' +\n                         'size: 0x' + kMaxLength().toString(16) + ' bytes')\n  }\n  return length | 0\n}\n\nfunction SlowBuffer (length) {\n  if (+length != length) { // eslint-disable-line eqeqeq\n    length = 0\n  }\n  return Buffer.alloc(+length)\n}\n\nBuffer.isBuffer = function isBuffer (b) {\n  return !!(b != null && b._isBuffer)\n}\n\nBuffer.compare = function compare (a, b) {\n  if (!Buffer.isBuffer(a) || !Buffer.isBuffer(b)) {\n    throw new TypeError('Arguments must be Buffers')\n  }\n\n  if (a === b) return 0\n\n  var x = a.length\n  var y = b.length\n\n  for (var i = 0, len = Math.min(x, y); i < len; ++i) {\n    if (a[i] !== b[i]) {\n      x = a[i]\n      y = b[i]\n      break\n    }\n  }\n\n  if (x < y) return -1\n  if (y < x) return 1\n  return 0\n}\n\nBuffer.isEncoding = function isEncoding (encoding) {\n  switch (String(encoding).toLowerCase()) {\n    case 'hex':\n    case 'utf8':\n    case 'utf-8':\n    case 'ascii':\n    case 'latin1':\n    case 'binary':\n    case 'base64':\n    case 'ucs2':\n    case 'ucs-2':\n    case 'utf16le':\n    case 'utf-16le':\n      return true\n    default:\n      return false\n  }\n}\n\nBuffer.concat = function concat (list, length) {\n  if (!isArray(list)) {\n    throw new TypeError('\"list\" argument must be an Array of Buffers')\n  }\n\n  if (list.length === 0) {\n    return Buffer.alloc(0)\n  }\n\n  var i\n  if (length === undefined) {\n    length = 0\n    for (i = 0; i < list.length; ++i) {\n      length += list[i].length\n    }\n  }\n\n  var buffer = Buffer.allocUnsafe(length)\n  var pos = 0\n  for (i = 0; i < list.length; ++i) {\n    var buf = list[i]\n    if (!Buffer.isBuffer(buf)) {\n      throw new TypeError('\"list\" argument must be an Array of Buffers')\n    }\n    buf.copy(buffer, pos)\n    pos += buf.length\n  }\n  return buffer\n}\n\nfunction byteLength (string, encoding) {\n  if (Buffer.isBuffer(string)) {\n    return string.length\n  }\n  if (typeof ArrayBuffer !== 'undefined' && typeof ArrayBuffer.isView === 'function' &&\n      (ArrayBuffer.isView(string) || string instanceof ArrayBuffer)) {\n    return string.byteLength\n  }\n  if (typeof string !== 'string') {\n    string = '' + string\n  }\n\n  var len = string.length\n  if (len === 0) return 0\n\n  // Use a for loop to avoid recursion\n  var loweredCase = false\n  for (;;) {\n    switch (encoding) {\n      case 'ascii':\n      case 'latin1':\n      case 'binary':\n        return len\n      case 'utf8':\n      case 'utf-8':\n      case undefined:\n        return utf8ToBytes(string).length\n      case 'ucs2':\n      case 'ucs-2':\n      case 'utf16le':\n      case 'utf-16le':\n        return len * 2\n      case 'hex':\n        return len >>> 1\n      case 'base64':\n        return base64ToBytes(string).length\n      default:\n        if (loweredCase) return utf8ToBytes(string).length // assume utf8\n        encoding = ('' + encoding).toLowerCase()\n        loweredCase = true\n    }\n  }\n}\nBuffer.byteLength = byteLength\n\nfunction slowToString (encoding, start, end) {\n  var loweredCase = false\n\n  // No need to verify that \"this.length <= MAX_UINT32\" since it's a read-only\n  // property of a typed array.\n\n  // This behaves neither like String nor Uint8Array in that we set start/end\n  // to their upper/lower bounds if the value passed is out of range.\n  // undefined is handled specially as per ECMA-262 6th Edition,\n  // Section 13.3.3.7 Runtime Semantics: KeyedBindingInitialization.\n  if (start === undefined || start < 0) {\n    start = 0\n  }\n  // Return early if start > this.length. Done here to prevent potential uint32\n  // coercion fail below.\n  if (start > this.length) {\n    return ''\n  }\n\n  if (end === undefined || end > this.length) {\n    end = this.length\n  }\n\n  if (end <= 0) {\n    return ''\n  }\n\n  // Force coersion to uint32. This will also coerce falsey/NaN values to 0.\n  end >>>= 0\n  start >>>= 0\n\n  if (end <= start) {\n    return ''\n  }\n\n  if (!encoding) encoding = 'utf8'\n\n  while (true) {\n    switch (encoding) {\n      case 'hex':\n        return hexSlice(this, start, end)\n\n      case 'utf8':\n      case 'utf-8':\n        return utf8Slice(this, start, end)\n\n      case 'ascii':\n        return asciiSlice(this, start, end)\n\n      case 'latin1':\n      case 'binary':\n        return latin1Slice(this, start, end)\n\n      case 'base64':\n        return base64Slice(this, start, end)\n\n      case 'ucs2':\n      case 'ucs-2':\n      case 'utf16le':\n      case 'utf-16le':\n        return utf16leSlice(this, start, end)\n\n      default:\n        if (loweredCase) throw new TypeError('Unknown encoding: ' + encoding)\n        encoding = (encoding + '').toLowerCase()\n        loweredCase = true\n    }\n  }\n}\n\n// The property is used by `Buffer.isBuffer` and `is-buffer` (in Safari 5-7) to detect\n// Buffer instances.\nBuffer.prototype._isBuffer = true\n\nfunction swap (b, n, m) {\n  var i = b[n]\n  b[n] = b[m]\n  b[m] = i\n}\n\nBuffer.prototype.swap16 = function swap16 () {\n  var len = this.length\n  if (len % 2 !== 0) {\n    throw new RangeError('Buffer size must be a multiple of 16-bits')\n  }\n  for (var i = 0; i < len; i += 2) {\n    swap(this, i, i + 1)\n  }\n  return this\n}\n\nBuffer.prototype.swap32 = function swap32 () {\n  var len = this.length\n  if (len % 4 !== 0) {\n    throw new RangeError('Buffer size must be a multiple of 32-bits')\n  }\n  for (var i = 0; i < len; i += 4) {\n    swap(this, i, i + 3)\n    swap(this, i + 1, i + 2)\n  }\n  return this\n}\n\nBuffer.prototype.swap64 = function swap64 () {\n  var len = this.length\n  if (len % 8 !== 0) {\n    throw new RangeError('Buffer size must be a multiple of 64-bits')\n  }\n  for (var i = 0; i < len; i += 8) {\n    swap(this, i, i + 7)\n    swap(this, i + 1, i + 6)\n    swap(this, i + 2, i + 5)\n    swap(this, i + 3, i + 4)\n  }\n  return this\n}\n\nBuffer.prototype.toString = function toString () {\n  var length = this.length | 0\n  if (length === 0) return ''\n  if (arguments.length === 0) return utf8Slice(this, 0, length)\n  return slowToString.apply(this, arguments)\n}\n\nBuffer.prototype.equals = function equals (b) {\n  if (!Buffer.isBuffer(b)) throw new TypeError('Argument must be a Buffer')\n  if (this === b) return true\n  return Buffer.compare(this, b) === 0\n}\n\nBuffer.prototype.inspect = function inspect () {\n  var str = ''\n  var max = exports.INSPECT_MAX_BYTES\n  if (this.length > 0) {\n    str = this.toString('hex', 0, max).match(/.{2}/g).join(' ')\n    if (this.length > max) str += ' ... '\n  }\n  return '<Buffer ' + str + '>'\n}\n\nBuffer.prototype.compare = function compare (target, start, end, thisStart, thisEnd) {\n  if (!Buffer.isBuffer(target)) {\n    throw new TypeError('Argument must be a Buffer')\n  }\n\n  if (start === undefined) {\n    start = 0\n  }\n  if (end === undefined) {\n    end = target ? target.length : 0\n  }\n  if (thisStart === undefined) {\n    thisStart = 0\n  }\n  if (thisEnd === undefined) {\n    thisEnd = this.length\n  }\n\n  if (start < 0 || end > target.length || thisStart < 0 || thisEnd > this.length) {\n    throw new RangeError('out of range index')\n  }\n\n  if (thisStart >= thisEnd && start >= end) {\n    return 0\n  }\n  if (thisStart >= thisEnd) {\n    return -1\n  }\n  if (start >= end) {\n    return 1\n  }\n\n  start >>>= 0\n  end >>>= 0\n  thisStart >>>= 0\n  thisEnd >>>= 0\n\n  if (this === target) return 0\n\n  var x = thisEnd - thisStart\n  var y = end - start\n  var len = Math.min(x, y)\n\n  var thisCopy = this.slice(thisStart, thisEnd)\n  var targetCopy = target.slice(start, end)\n\n  for (var i = 0; i < len; ++i) {\n    if (thisCopy[i] !== targetCopy[i]) {\n      x = thisCopy[i]\n      y = targetCopy[i]\n      break\n    }\n  }\n\n  if (x < y) return -1\n  if (y < x) return 1\n  return 0\n}\n\n// Finds either the first index of `val` in `buffer` at offset >= `byteOffset`,\n// OR the last index of `val` in `buffer` at offset <= `byteOffset`.\n//\n// Arguments:\n// - buffer - a Buffer to search\n// - val - a string, Buffer, or number\n// - byteOffset - an index into `buffer`; will be clamped to an int32\n// - encoding - an optional encoding, relevant is val is a string\n// - dir - true for indexOf, false for lastIndexOf\nfunction bidirectionalIndexOf (buffer, val, byteOffset, encoding, dir) {\n  // Empty buffer means no match\n  if (buffer.length === 0) return -1\n\n  // Normalize byteOffset\n  if (typeof byteOffset === 'string') {\n    encoding = byteOffset\n    byteOffset = 0\n  } else if (byteOffset > 0x7fffffff) {\n    byteOffset = 0x7fffffff\n  } else if (byteOffset < -0x80000000) {\n    byteOffset = -0x80000000\n  }\n  byteOffset = +byteOffset  // Coerce to Number.\n  if (isNaN(byteOffset)) {\n    // byteOffset: it it's undefined, null, NaN, \"foo\", etc, search whole buffer\n    byteOffset = dir ? 0 : (buffer.length - 1)\n  }\n\n  // Normalize byteOffset: negative offsets start from the end of the buffer\n  if (byteOffset < 0) byteOffset = buffer.length + byteOffset\n  if (byteOffset >= buffer.length) {\n    if (dir) return -1\n    else byteOffset = buffer.length - 1\n  } else if (byteOffset < 0) {\n    if (dir) byteOffset = 0\n    else return -1\n  }\n\n  // Normalize val\n  if (typeof val === 'string') {\n    val = Buffer.from(val, encoding)\n  }\n\n  // Finally, search either indexOf (if dir is true) or lastIndexOf\n  if (Buffer.isBuffer(val)) {\n    // Special case: looking for empty string/buffer always fails\n    if (val.length === 0) {\n      return -1\n    }\n    return arrayIndexOf(buffer, val, byteOffset, encoding, dir)\n  } else if (typeof val === 'number') {\n    val = val & 0xFF // Search for a byte value [0-255]\n    if (Buffer.TYPED_ARRAY_SUPPORT &&\n        typeof Uint8Array.prototype.indexOf === 'function') {\n      if (dir) {\n        return Uint8Array.prototype.indexOf.call(buffer, val, byteOffset)\n      } else {\n        return Uint8Array.prototype.lastIndexOf.call(buffer, val, byteOffset)\n      }\n    }\n    return arrayIndexOf(buffer, [ val ], byteOffset, encoding, dir)\n  }\n\n  throw new TypeError('val must be string, number or Buffer')\n}\n\nfunction arrayIndexOf (arr, val, byteOffset, encoding, dir) {\n  var indexSize = 1\n  var arrLength = arr.length\n  var valLength = val.length\n\n  if (encoding !== undefined) {\n    encoding = String(encoding).toLowerCase()\n    if (encoding === 'ucs2' || encoding === 'ucs-2' ||\n        encoding === 'utf16le' || encoding === 'utf-16le') {\n      if (arr.length < 2 || val.length < 2) {\n        return -1\n      }\n      indexSize = 2\n      arrLength /= 2\n      valLength /= 2\n      byteOffset /= 2\n    }\n  }\n\n  function read (buf, i) {\n    if (indexSize === 1) {\n      return buf[i]\n    } else {\n      return buf.readUInt16BE(i * indexSize)\n    }\n  }\n\n  var i\n  if (dir) {\n    var foundIndex = -1\n    for (i = byteOffset; i < arrLength; i++) {\n      if (read(arr, i) === read(val, foundIndex === -1 ? 0 : i - foundIndex)) {\n        if (foundIndex === -1) foundIndex = i\n        if (i - foundIndex + 1 === valLength) return foundIndex * indexSize\n      } else {\n        if (foundIndex !== -1) i -= i - foundIndex\n        foundIndex = -1\n      }\n    }\n  } else {\n    if (byteOffset + valLength > arrLength) byteOffset = arrLength - valLength\n    for (i = byteOffset; i >= 0; i--) {\n      var found = true\n      for (var j = 0; j < valLength; j++) {\n        if (read(arr, i + j) !== read(val, j)) {\n          found = false\n          break\n        }\n      }\n      if (found) return i\n    }\n  }\n\n  return -1\n}\n\nBuffer.prototype.includes = function includes (val, byteOffset, encoding) {\n  return this.indexOf(val, byteOffset, encoding) !== -1\n}\n\nBuffer.prototype.indexOf = function indexOf (val, byteOffset, encoding) {\n  return bidirectionalIndexOf(this, val, byteOffset, encoding, true)\n}\n\nBuffer.prototype.lastIndexOf = function lastIndexOf (val, byteOffset, encoding) {\n  return bidirectionalIndexOf(this, val, byteOffset, encoding, false)\n}\n\nfunction hexWrite (buf, string, offset, length) {\n  offset = Number(offset) || 0\n  var remaining = buf.length - offset\n  if (!length) {\n    length = remaining\n  } else {\n    length = Number(length)\n    if (length > remaining) {\n      length = remaining\n    }\n  }\n\n  // must be an even number of digits\n  var strLen = string.length\n  if (strLen % 2 !== 0) throw new TypeError('Invalid hex string')\n\n  if (length > strLen / 2) {\n    length = strLen / 2\n  }\n  for (var i = 0; i < length; ++i) {\n    var parsed = parseInt(string.substr(i * 2, 2), 16)\n    if (isNaN(parsed)) return i\n    buf[offset + i] = parsed\n  }\n  return i\n}\n\nfunction utf8Write (buf, string, offset, length) {\n  return blitBuffer(utf8ToBytes(string, buf.length - offset), buf, offset, length)\n}\n\nfunction asciiWrite (buf, string, offset, length) {\n  return blitBuffer(asciiToBytes(string), buf, offset, length)\n}\n\nfunction latin1Write (buf, string, offset, length) {\n  return asciiWrite(buf, string, offset, length)\n}\n\nfunction base64Write (buf, string, offset, length) {\n  return blitBuffer(base64ToBytes(string), buf, offset, length)\n}\n\nfunction ucs2Write (buf, string, offset, length) {\n  return blitBuffer(utf16leToBytes(string, buf.length - offset), buf, offset, length)\n}\n\nBuffer.prototype.write = function write (string, offset, length, encoding) {\n  // Buffer#write(string)\n  if (offset === undefined) {\n    encoding = 'utf8'\n    length = this.length\n    offset = 0\n  // Buffer#write(string, encoding)\n  } else if (length === undefined && typeof offset === 'string') {\n    encoding = offset\n    length = this.length\n    offset = 0\n  // Buffer#write(string, offset[, length][, encoding])\n  } else if (isFinite(offset)) {\n    offset = offset | 0\n    if (isFinite(length)) {\n      length = length | 0\n      if (encoding === undefined) encoding = 'utf8'\n    } else {\n      encoding = length\n      length = undefined\n    }\n  // legacy write(string, encoding, offset, length) - remove in v0.13\n  } else {\n    throw new Error(\n      'Buffer.write(string, encoding, offset[, length]) is no longer supported'\n    )\n  }\n\n  var remaining = this.length - offset\n  if (length === undefined || length > remaining) length = remaining\n\n  if ((string.length > 0 && (length < 0 || offset < 0)) || offset > this.length) {\n    throw new RangeError('Attempt to write outside buffer bounds')\n  }\n\n  if (!encoding) encoding = 'utf8'\n\n  var loweredCase = false\n  for (;;) {\n    switch (encoding) {\n      case 'hex':\n        return hexWrite(this, string, offset, length)\n\n      case 'utf8':\n      case 'utf-8':\n        return utf8Write(this, string, offset, length)\n\n      case 'ascii':\n        return asciiWrite(this, string, offset, length)\n\n      case 'latin1':\n      case 'binary':\n        return latin1Write(this, string, offset, length)\n\n      case 'base64':\n        // Warning: maxLength not taken into account in base64Write\n        return base64Write(this, string, offset, length)\n\n      case 'ucs2':\n      case 'ucs-2':\n      case 'utf16le':\n      case 'utf-16le':\n        return ucs2Write(this, string, offset, length)\n\n      default:\n        if (loweredCase) throw new TypeError('Unknown encoding: ' + encoding)\n        encoding = ('' + encoding).toLowerCase()\n        loweredCase = true\n    }\n  }\n}\n\nBuffer.prototype.toJSON = function toJSON () {\n  return {\n    type: 'Buffer',\n    data: Array.prototype.slice.call(this._arr || this, 0)\n  }\n}\n\nfunction base64Slice (buf, start, end) {\n  if (start === 0 && end === buf.length) {\n    return base64.fromByteArray(buf)\n  } else {\n    return base64.fromByteArray(buf.slice(start, end))\n  }\n}\n\nfunction utf8Slice (buf, start, end) {\n  end = Math.min(buf.length, end)\n  var res = []\n\n  var i = start\n  while (i < end) {\n    var firstByte = buf[i]\n    var codePoint = null\n    var bytesPerSequence = (firstByte > 0xEF) ? 4\n      : (firstByte > 0xDF) ? 3\n      : (firstByte > 0xBF) ? 2\n      : 1\n\n    if (i + bytesPerSequence <= end) {\n      var secondByte, thirdByte, fourthByte, tempCodePoint\n\n      switch (bytesPerSequence) {\n        case 1:\n          if (firstByte < 0x80) {\n            codePoint = firstByte\n          }\n          break\n        case 2:\n          secondByte = buf[i + 1]\n          if ((secondByte & 0xC0) === 0x80) {\n            tempCodePoint = (firstByte & 0x1F) << 0x6 | (secondByte & 0x3F)\n            if (tempCodePoint > 0x7F) {\n              codePoint = tempCodePoint\n            }\n          }\n          break\n        case 3:\n          secondByte = buf[i + 1]\n          thirdByte = buf[i + 2]\n          if ((secondByte & 0xC0) === 0x80 && (thirdByte & 0xC0) === 0x80) {\n            tempCodePoint = (firstByte & 0xF) << 0xC | (secondByte & 0x3F) << 0x6 | (thirdByte & 0x3F)\n            if (tempCodePoint > 0x7FF && (tempCodePoint < 0xD800 || tempCodePoint > 0xDFFF)) {\n              codePoint = tempCodePoint\n            }\n          }\n          break\n        case 4:\n          secondByte = buf[i + 1]\n          thirdByte = buf[i + 2]\n          fourthByte = buf[i + 3]\n          if ((secondByte & 0xC0) === 0x80 && (thirdByte & 0xC0) === 0x80 && (fourthByte & 0xC0) === 0x80) {\n            tempCodePoint = (firstByte & 0xF) << 0x12 | (secondByte & 0x3F) << 0xC | (thirdByte & 0x3F) << 0x6 | (fourthByte & 0x3F)\n            if (tempCodePoint > 0xFFFF && tempCodePoint < 0x110000) {\n              codePoint = tempCodePoint\n            }\n          }\n      }\n    }\n\n    if (codePoint === null) {\n      // we did not generate a valid codePoint so insert a\n      // replacement char (U+FFFD) and advance only 1 byte\n      codePoint = 0xFFFD\n      bytesPerSequence = 1\n    } else if (codePoint > 0xFFFF) {\n      // encode to utf16 (surrogate pair dance)\n      codePoint -= 0x10000\n      res.push(codePoint >>> 10 & 0x3FF | 0xD800)\n      codePoint = 0xDC00 | codePoint & 0x3FF\n    }\n\n    res.push(codePoint)\n    i += bytesPerSequence\n  }\n\n  return decodeCodePointsArray(res)\n}\n\n// Based on http://stackoverflow.com/a/22747272/680742, the browser with\n// the lowest limit is Chrome, with 0x10000 args.\n// We go 1 magnitude less, for safety\nvar MAX_ARGUMENTS_LENGTH = 0x1000\n\nfunction decodeCodePointsArray (codePoints) {\n  var len = codePoints.length\n  if (len <= MAX_ARGUMENTS_LENGTH) {\n    return String.fromCharCode.apply(String, codePoints) // avoid extra slice()\n  }\n\n  // Decode in chunks to avoid \"call stack size exceeded\".\n  var res = ''\n  var i = 0\n  while (i < len) {\n    res += String.fromCharCode.apply(\n      String,\n      codePoints.slice(i, i += MAX_ARGUMENTS_LENGTH)\n    )\n  }\n  return res\n}\n\nfunction asciiSlice (buf, start, end) {\n  var ret = ''\n  end = Math.min(buf.length, end)\n\n  for (var i = start; i < end; ++i) {\n    ret += String.fromCharCode(buf[i] & 0x7F)\n  }\n  return ret\n}\n\nfunction latin1Slice (buf, start, end) {\n  var ret = ''\n  end = Math.min(buf.length, end)\n\n  for (var i = start; i < end; ++i) {\n    ret += String.fromCharCode(buf[i])\n  }\n  return ret\n}\n\nfunction hexSlice (buf, start, end) {\n  var len = buf.length\n\n  if (!start || start < 0) start = 0\n  if (!end || end < 0 || end > len) end = len\n\n  var out = ''\n  for (var i = start; i < end; ++i) {\n    out += toHex(buf[i])\n  }\n  return out\n}\n\nfunction utf16leSlice (buf, start, end) {\n  var bytes = buf.slice(start, end)\n  var res = ''\n  for (var i = 0; i < bytes.length; i += 2) {\n    res += String.fromCharCode(bytes[i] + bytes[i + 1] * 256)\n  }\n  return res\n}\n\nBuffer.prototype.slice = function slice (start, end) {\n  var len = this.length\n  start = ~~start\n  end = end === undefined ? len : ~~end\n\n  if (start < 0) {\n    start += len\n    if (start < 0) start = 0\n  } else if (start > len) {\n    start = len\n  }\n\n  if (end < 0) {\n    end += len\n    if (end < 0) end = 0\n  } else if (end > len) {\n    end = len\n  }\n\n  if (end < start) end = start\n\n  var newBuf\n  if (Buffer.TYPED_ARRAY_SUPPORT) {\n    newBuf = this.subarray(start, end)\n    newBuf.__proto__ = Buffer.prototype\n  } else {\n    var sliceLen = end - start\n    newBuf = new Buffer(sliceLen, undefined)\n    for (var i = 0; i < sliceLen; ++i) {\n      newBuf[i] = this[i + start]\n    }\n  }\n\n  return newBuf\n}\n\n/*\n * Need to make sure that buffer isn't trying to write out of bounds.\n */\nfunction checkOffset (offset, ext, length) {\n  if ((offset % 1) !== 0 || offset < 0) throw new RangeError('offset is not uint')\n  if (offset + ext > length) throw new RangeError('Trying to access beyond buffer length')\n}\n\nBuffer.prototype.readUIntLE = function readUIntLE (offset, byteLength, noAssert) {\n  offset = offset | 0\n  byteLength = byteLength | 0\n  if (!noAssert) checkOffset(offset, byteLength, this.length)\n\n  var val = this[offset]\n  var mul = 1\n  var i = 0\n  while (++i < byteLength && (mul *= 0x100)) {\n    val += this[offset + i] * mul\n  }\n\n  return val\n}\n\nBuffer.prototype.readUIntBE = function readUIntBE (offset, byteLength, noAssert) {\n  offset = offset | 0\n  byteLength = byteLength | 0\n  if (!noAssert) {\n    checkOffset(offset, byteLength, this.length)\n  }\n\n  var val = this[offset + --byteLength]\n  var mul = 1\n  while (byteLength > 0 && (mul *= 0x100)) {\n    val += this[offset + --byteLength] * mul\n  }\n\n  return val\n}\n\nBuffer.prototype.readUInt8 = function readUInt8 (offset, noAssert) {\n  if (!noAssert) checkOffset(offset, 1, this.length)\n  return this[offset]\n}\n\nBuffer.prototype.readUInt16LE = function readUInt16LE (offset, noAssert) {\n  if (!noAssert) checkOffset(offset, 2, this.length)\n  return this[offset] | (this[offset + 1] << 8)\n}\n\nBuffer.prototype.readUInt16BE = function readUInt16BE (offset, noAssert) {\n  if (!noAssert) checkOffset(offset, 2, this.length)\n  return (this[offset] << 8) | this[offset + 1]\n}\n\nBuffer.prototype.readUInt32LE = function readUInt32LE (offset, noAssert) {\n  if (!noAssert) checkOffset(offset, 4, this.length)\n\n  return ((this[offset]) |\n      (this[offset + 1] << 8) |\n      (this[offset + 2] << 16)) +\n      (this[offset + 3] * 0x1000000)\n}\n\nBuffer.prototype.readUInt32BE = function readUInt32BE (offset, noAssert) {\n  if (!noAssert) checkOffset(offset, 4, this.length)\n\n  return (this[offset] * 0x1000000) +\n    ((this[offset + 1] << 16) |\n    (this[offset + 2] << 8) |\n    this[offset + 3])\n}\n\nBuffer.prototype.readIntLE = function readIntLE (offset, byteLength, noAssert) {\n  offset = offset | 0\n  byteLength = byteLength | 0\n  if (!noAssert) checkOffset(offset, byteLength, this.length)\n\n  var val = this[offset]\n  var mul = 1\n  var i = 0\n  while (++i < byteLength && (mul *= 0x100)) {\n    val += this[offset + i] * mul\n  }\n  mul *= 0x80\n\n  if (val >= mul) val -= Math.pow(2, 8 * byteLength)\n\n  return val\n}\n\nBuffer.prototype.readIntBE = function readIntBE (offset, byteLength, noAssert) {\n  offset = offset | 0\n  byteLength = byteLength | 0\n  if (!noAssert) checkOffset(offset, byteLength, this.length)\n\n  var i = byteLength\n  var mul = 1\n  var val = this[offset + --i]\n  while (i > 0 && (mul *= 0x100)) {\n    val += this[offset + --i] * mul\n  }\n  mul *= 0x80\n\n  if (val >= mul) val -= Math.pow(2, 8 * byteLength)\n\n  return val\n}\n\nBuffer.prototype.readInt8 = function readInt8 (offset, noAssert) {\n  if (!noAssert) checkOffset(offset, 1, this.length)\n  if (!(this[offset] & 0x80)) return (this[offset])\n  return ((0xff - this[offset] + 1) * -1)\n}\n\nBuffer.prototype.readInt16LE = function readInt16LE (offset, noAssert) {\n  if (!noAssert) checkOffset(offset, 2, this.length)\n  var val = this[offset] | (this[offset + 1] << 8)\n  return (val & 0x8000) ? val | 0xFFFF0000 : val\n}\n\nBuffer.prototype.readInt16BE = function readInt16BE (offset, noAssert) {\n  if (!noAssert) checkOffset(offset, 2, this.length)\n  var val = this[offset + 1] | (this[offset] << 8)\n  return (val & 0x8000) ? val | 0xFFFF0000 : val\n}\n\nBuffer.prototype.readInt32LE = function readInt32LE (offset, noAssert) {\n  if (!noAssert) checkOffset(offset, 4, this.length)\n\n  return (this[offset]) |\n    (this[offset + 1] << 8) |\n    (this[offset + 2] << 16) |\n    (this[offset + 3] << 24)\n}\n\nBuffer.prototype.readInt32BE = function readInt32BE (offset, noAssert) {\n  if (!noAssert) checkOffset(offset, 4, this.length)\n\n  return (this[offset] << 24) |\n    (this[offset + 1] << 16) |\n    (this[offset + 2] << 8) |\n    (this[offset + 3])\n}\n\nBuffer.prototype.readFloatLE = function readFloatLE (offset, noAssert) {\n  if (!noAssert) checkOffset(offset, 4, this.length)\n  return ieee754.read(this, offset, true, 23, 4)\n}\n\nBuffer.prototype.readFloatBE = function readFloatBE (offset, noAssert) {\n  if (!noAssert) checkOffset(offset, 4, this.length)\n  return ieee754.read(this, offset, false, 23, 4)\n}\n\nBuffer.prototype.readDoubleLE = function readDoubleLE (offset, noAssert) {\n  if (!noAssert) checkOffset(offset, 8, this.length)\n  return ieee754.read(this, offset, true, 52, 8)\n}\n\nBuffer.prototype.readDoubleBE = function readDoubleBE (offset, noAssert) {\n  if (!noAssert) checkOffset(offset, 8, this.length)\n  return ieee754.read(this, offset, false, 52, 8)\n}\n\nfunction checkInt (buf, value, offset, ext, max, min) {\n  if (!Buffer.isBuffer(buf)) throw new TypeError('\"buffer\" argument must be a Buffer instance')\n  if (value > max || value < min) throw new RangeError('\"value\" argument is out of bounds')\n  if (offset + ext > buf.length) throw new RangeError('Index out of range')\n}\n\nBuffer.prototype.writeUIntLE = function writeUIntLE (value, offset, byteLength, noAssert) {\n  value = +value\n  offset = offset | 0\n  byteLength = byteLength | 0\n  if (!noAssert) {\n    var maxBytes = Math.pow(2, 8 * byteLength) - 1\n    checkInt(this, value, offset, byteLength, maxBytes, 0)\n  }\n\n  var mul = 1\n  var i = 0\n  this[offset] = value & 0xFF\n  while (++i < byteLength && (mul *= 0x100)) {\n    this[offset + i] = (value / mul) & 0xFF\n  }\n\n  return offset + byteLength\n}\n\nBuffer.prototype.writeUIntBE = function writeUIntBE (value, offset, byteLength, noAssert) {\n  value = +value\n  offset = offset | 0\n  byteLength = byteLength | 0\n  if (!noAssert) {\n    var maxBytes = Math.pow(2, 8 * byteLength) - 1\n    checkInt(this, value, offset, byteLength, maxBytes, 0)\n  }\n\n  var i = byteLength - 1\n  var mul = 1\n  this[offset + i] = value & 0xFF\n  while (--i >= 0 && (mul *= 0x100)) {\n    this[offset + i] = (value / mul) & 0xFF\n  }\n\n  return offset + byteLength\n}\n\nBuffer.prototype.writeUInt8 = function writeUInt8 (value, offset, noAssert) {\n  value = +value\n  offset = offset | 0\n  if (!noAssert) checkInt(this, value, offset, 1, 0xff, 0)\n  if (!Buffer.TYPED_ARRAY_SUPPORT) value = Math.floor(value)\n  this[offset] = (value & 0xff)\n  return offset + 1\n}\n\nfunction objectWriteUInt16 (buf, value, offset, littleEndian) {\n  if (value < 0) value = 0xffff + value + 1\n  for (var i = 0, j = Math.min(buf.length - offset, 2); i < j; ++i) {\n    buf[offset + i] = (value & (0xff << (8 * (littleEndian ? i : 1 - i)))) >>>\n      (littleEndian ? i : 1 - i) * 8\n  }\n}\n\nBuffer.prototype.writeUInt16LE = function writeUInt16LE (value, offset, noAssert) {\n  value = +value\n  offset = offset | 0\n  if (!noAssert) checkInt(this, value, offset, 2, 0xffff, 0)\n  if (Buffer.TYPED_ARRAY_SUPPORT) {\n    this[offset] = (value & 0xff)\n    this[offset + 1] = (value >>> 8)\n  } else {\n    objectWriteUInt16(this, value, offset, true)\n  }\n  return offset + 2\n}\n\nBuffer.prototype.writeUInt16BE = function writeUInt16BE (value, offset, noAssert) {\n  value = +value\n  offset = offset | 0\n  if (!noAssert) checkInt(this, value, offset, 2, 0xffff, 0)\n  if (Buffer.TYPED_ARRAY_SUPPORT) {\n    this[offset] = (value >>> 8)\n    this[offset + 1] = (value & 0xff)\n  } else {\n    objectWriteUInt16(this, value, offset, false)\n  }\n  return offset + 2\n}\n\nfunction objectWriteUInt32 (buf, value, offset, littleEndian) {\n  if (value < 0) value = 0xffffffff + value + 1\n  for (var i = 0, j = Math.min(buf.length - offset, 4); i < j; ++i) {\n    buf[offset + i] = (value >>> (littleEndian ? i : 3 - i) * 8) & 0xff\n  }\n}\n\nBuffer.prototype.writeUInt32LE = function writeUInt32LE (value, offset, noAssert) {\n  value = +value\n  offset = offset | 0\n  if (!noAssert) checkInt(this, value, offset, 4, 0xffffffff, 0)\n  if (Buffer.TYPED_ARRAY_SUPPORT) {\n    this[offset + 3] = (value >>> 24)\n    this[offset + 2] = (value >>> 16)\n    this[offset + 1] = (value >>> 8)\n    this[offset] = (value & 0xff)\n  } else {\n    objectWriteUInt32(this, value, offset, true)\n  }\n  return offset + 4\n}\n\nBuffer.prototype.writeUInt32BE = function writeUInt32BE (value, offset, noAssert) {\n  value = +value\n  offset = offset | 0\n  if (!noAssert) checkInt(this, value, offset, 4, 0xffffffff, 0)\n  if (Buffer.TYPED_ARRAY_SUPPORT) {\n    this[offset] = (value >>> 24)\n    this[offset + 1] = (value >>> 16)\n    this[offset + 2] = (value >>> 8)\n    this[offset + 3] = (value & 0xff)\n  } else {\n    objectWriteUInt32(this, value, offset, false)\n  }\n  return offset + 4\n}\n\nBuffer.prototype.writeIntLE = function writeIntLE (value, offset, byteLength, noAssert) {\n  value = +value\n  offset = offset | 0\n  if (!noAssert) {\n    var limit = Math.pow(2, 8 * byteLength - 1)\n\n    checkInt(this, value, offset, byteLength, limit - 1, -limit)\n  }\n\n  var i = 0\n  var mul = 1\n  var sub = 0\n  this[offset] = value & 0xFF\n  while (++i < byteLength && (mul *= 0x100)) {\n    if (value < 0 && sub === 0 && this[offset + i - 1] !== 0) {\n      sub = 1\n    }\n    this[offset + i] = ((value / mul) >> 0) - sub & 0xFF\n  }\n\n  return offset + byteLength\n}\n\nBuffer.prototype.writeIntBE = function writeIntBE (value, offset, byteLength, noAssert) {\n  value = +value\n  offset = offset | 0\n  if (!noAssert) {\n    var limit = Math.pow(2, 8 * byteLength - 1)\n\n    checkInt(this, value, offset, byteLength, limit - 1, -limit)\n  }\n\n  var i = byteLength - 1\n  var mul = 1\n  var sub = 0\n  this[offset + i] = value & 0xFF\n  while (--i >= 0 && (mul *= 0x100)) {\n    if (value < 0 && sub === 0 && this[offset + i + 1] !== 0) {\n      sub = 1\n    }\n    this[offset + i] = ((value / mul) >> 0) - sub & 0xFF\n  }\n\n  return offset + byteLength\n}\n\nBuffer.prototype.writeInt8 = function writeInt8 (value, offset, noAssert) {\n  value = +value\n  offset = offset | 0\n  if (!noAssert) checkInt(this, value, offset, 1, 0x7f, -0x80)\n  if (!Buffer.TYPED_ARRAY_SUPPORT) value = Math.floor(value)\n  if (value < 0) value = 0xff + value + 1\n  this[offset] = (value & 0xff)\n  return offset + 1\n}\n\nBuffer.prototype.writeInt16LE = function writeInt16LE (value, offset, noAssert) {\n  value = +value\n  offset = offset | 0\n  if (!noAssert) checkInt(this, value, offset, 2, 0x7fff, -0x8000)\n  if (Buffer.TYPED_ARRAY_SUPPORT) {\n    this[offset] = (value & 0xff)\n    this[offset + 1] = (value >>> 8)\n  } else {\n    objectWriteUInt16(this, value, offset, true)\n  }\n  return offset + 2\n}\n\nBuffer.prototype.writeInt16BE = function writeInt16BE (value, offset, noAssert) {\n  value = +value\n  offset = offset | 0\n  if (!noAssert) checkInt(this, value, offset, 2, 0x7fff, -0x8000)\n  if (Buffer.TYPED_ARRAY_SUPPORT) {\n    this[offset] = (value >>> 8)\n    this[offset + 1] = (value & 0xff)\n  } else {\n    objectWriteUInt16(this, value, offset, false)\n  }\n  return offset + 2\n}\n\nBuffer.prototype.writeInt32LE = function writeInt32LE (value, offset, noAssert) {\n  value = +value\n  offset = offset | 0\n  if (!noAssert) checkInt(this, value, offset, 4, 0x7fffffff, -0x80000000)\n  if (Buffer.TYPED_ARRAY_SUPPORT) {\n    this[offset] = (value & 0xff)\n    this[offset + 1] = (value >>> 8)\n    this[offset + 2] = (value >>> 16)\n    this[offset + 3] = (value >>> 24)\n  } else {\n    objectWriteUInt32(this, value, offset, true)\n  }\n  return offset + 4\n}\n\nBuffer.prototype.writeInt32BE = function writeInt32BE (value, offset, noAssert) {\n  value = +value\n  offset = offset | 0\n  if (!noAssert) checkInt(this, value, offset, 4, 0x7fffffff, -0x80000000)\n  if (value < 0) value = 0xffffffff + value + 1\n  if (Buffer.TYPED_ARRAY_SUPPORT) {\n    this[offset] = (value >>> 24)\n    this[offset + 1] = (value >>> 16)\n    this[offset + 2] = (value >>> 8)\n    this[offset + 3] = (value & 0xff)\n  } else {\n    objectWriteUInt32(this, value, offset, false)\n  }\n  return offset + 4\n}\n\nfunction checkIEEE754 (buf, value, offset, ext, max, min) {\n  if (offset + ext > buf.length) throw new RangeError('Index out of range')\n  if (offset < 0) throw new RangeError('Index out of range')\n}\n\nfunction writeFloat (buf, value, offset, littleEndian, noAssert) {\n  if (!noAssert) {\n    checkIEEE754(buf, value, offset, 4, 3.4028234663852886e+38, -3.4028234663852886e+38)\n  }\n  ieee754.write(buf, value, offset, littleEndian, 23, 4)\n  return offset + 4\n}\n\nBuffer.prototype.writeFloatLE = function writeFloatLE (value, offset, noAssert) {\n  return writeFloat(this, value, offset, true, noAssert)\n}\n\nBuffer.prototype.writeFloatBE = function writeFloatBE (value, offset, noAssert) {\n  return writeFloat(this, value, offset, false, noAssert)\n}\n\nfunction writeDouble (buf, value, offset, littleEndian, noAssert) {\n  if (!noAssert) {\n    checkIEEE754(buf, value, offset, 8, 1.7976931348623157E+308, -1.7976931348623157E+308)\n  }\n  ieee754.write(buf, value, offset, littleEndian, 52, 8)\n  return offset + 8\n}\n\nBuffer.prototype.writeDoubleLE = function writeDoubleLE (value, offset, noAssert) {\n  return writeDouble(this, value, offset, true, noAssert)\n}\n\nBuffer.prototype.writeDoubleBE = function writeDoubleBE (value, offset, noAssert) {\n  return writeDouble(this, value, offset, false, noAssert)\n}\n\n// copy(targetBuffer, targetStart=0, sourceStart=0, sourceEnd=buffer.length)\nBuffer.prototype.copy = function copy (target, targetStart, start, end) {\n  if (!start) start = 0\n  if (!end && end !== 0) end = this.length\n  if (targetStart >= target.length) targetStart = target.length\n  if (!targetStart) targetStart = 0\n  if (end > 0 && end < start) end = start\n\n  // Copy 0 bytes; we're done\n  if (end === start) return 0\n  if (target.length === 0 || this.length === 0) return 0\n\n  // Fatal error conditions\n  if (targetStart < 0) {\n    throw new RangeError('targetStart out of bounds')\n  }\n  if (start < 0 || start >= this.length) throw new RangeError('sourceStart out of bounds')\n  if (end < 0) throw new RangeError('sourceEnd out of bounds')\n\n  // Are we oob?\n  if (end > this.length) end = this.length\n  if (target.length - targetStart < end - start) {\n    end = target.length - targetStart + start\n  }\n\n  var len = end - start\n  var i\n\n  if (this === target && start < targetStart && targetStart < end) {\n    // descending copy from end\n    for (i = len - 1; i >= 0; --i) {\n      target[i + targetStart] = this[i + start]\n    }\n  } else if (len < 1000 || !Buffer.TYPED_ARRAY_SUPPORT) {\n    // ascending copy from start\n    for (i = 0; i < len; ++i) {\n      target[i + targetStart] = this[i + start]\n    }\n  } else {\n    Uint8Array.prototype.set.call(\n      target,\n      this.subarray(start, start + len),\n      targetStart\n    )\n  }\n\n  return len\n}\n\n// Usage:\n//    buffer.fill(number[, offset[, end]])\n//    buffer.fill(buffer[, offset[, end]])\n//    buffer.fill(string[, offset[, end]][, encoding])\nBuffer.prototype.fill = function fill (val, start, end, encoding) {\n  // Handle string cases:\n  if (typeof val === 'string') {\n    if (typeof start === 'string') {\n      encoding = start\n      start = 0\n      end = this.length\n    } else if (typeof end === 'string') {\n      encoding = end\n      end = this.length\n    }\n    if (val.length === 1) {\n      var code = val.charCodeAt(0)\n      if (code < 256) {\n        val = code\n      }\n    }\n    if (encoding !== undefined && typeof encoding !== 'string') {\n      throw new TypeError('encoding must be a string')\n    }\n    if (typeof encoding === 'string' && !Buffer.isEncoding(encoding)) {\n      throw new TypeError('Unknown encoding: ' + encoding)\n    }\n  } else if (typeof val === 'number') {\n    val = val & 255\n  }\n\n  // Invalid ranges are not set to a default, so can range check early.\n  if (start < 0 || this.length < start || this.length < end) {\n    throw new RangeError('Out of range index')\n  }\n\n  if (end <= start) {\n    return this\n  }\n\n  start = start >>> 0\n  end = end === undefined ? this.length : end >>> 0\n\n  if (!val) val = 0\n\n  var i\n  if (typeof val === 'number') {\n    for (i = start; i < end; ++i) {\n      this[i] = val\n    }\n  } else {\n    var bytes = Buffer.isBuffer(val)\n      ? val\n      : utf8ToBytes(new Buffer(val, encoding).toString())\n    var len = bytes.length\n    for (i = 0; i < end - start; ++i) {\n      this[i + start] = bytes[i % len]\n    }\n  }\n\n  return this\n}\n\n// HELPER FUNCTIONS\n// ================\n\nvar INVALID_BASE64_RE = /[^+\\/0-9A-Za-z-_]/g\n\nfunction base64clean (str) {\n  // Node strips out invalid characters like \\n and \\t from the string, base64-js does not\n  str = stringtrim(str).replace(INVALID_BASE64_RE, '')\n  // Node converts strings with length < 2 to ''\n  if (str.length < 2) return ''\n  // Node allows for non-padded base64 strings (missing trailing ===), base64-js does not\n  while (str.length % 4 !== 0) {\n    str = str + '='\n  }\n  return str\n}\n\nfunction stringtrim (str) {\n  if (str.trim) return str.trim()\n  return str.replace(/^\\s+|\\s+$/g, '')\n}\n\nfunction toHex (n) {\n  if (n < 16) return '0' + n.toString(16)\n  return n.toString(16)\n}\n\nfunction utf8ToBytes (string, units) {\n  units = units || Infinity\n  var codePoint\n  var length = string.length\n  var leadSurrogate = null\n  var bytes = []\n\n  for (var i = 0; i < length; ++i) {\n    codePoint = string.charCodeAt(i)\n\n    // is surrogate component\n    if (codePoint > 0xD7FF && codePoint < 0xE000) {\n      // last char was a lead\n      if (!leadSurrogate) {\n        // no lead yet\n        if (codePoint > 0xDBFF) {\n          // unexpected trail\n          if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)\n          continue\n        } else if (i + 1 === length) {\n          // unpaired lead\n          if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)\n          continue\n        }\n\n        // valid lead\n        leadSurrogate = codePoint\n\n        continue\n      }\n\n      // 2 leads in a row\n      if (codePoint < 0xDC00) {\n        if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)\n        leadSurrogate = codePoint\n        continue\n      }\n\n      // valid surrogate pair\n      codePoint = (leadSurrogate - 0xD800 << 10 | codePoint - 0xDC00) + 0x10000\n    } else if (leadSurrogate) {\n      // valid bmp char, but last char was a lead\n      if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)\n    }\n\n    leadSurrogate = null\n\n    // encode utf8\n    if (codePoint < 0x80) {\n      if ((units -= 1) < 0) break\n      bytes.push(codePoint)\n    } else if (codePoint < 0x800) {\n      if ((units -= 2) < 0) break\n      bytes.push(\n        codePoint >> 0x6 | 0xC0,\n        codePoint & 0x3F | 0x80\n      )\n    } else if (codePoint < 0x10000) {\n      if ((units -= 3) < 0) break\n      bytes.push(\n        codePoint >> 0xC | 0xE0,\n        codePoint >> 0x6 & 0x3F | 0x80,\n        codePoint & 0x3F | 0x80\n      )\n    } else if (codePoint < 0x110000) {\n      if ((units -= 4) < 0) break\n      bytes.push(\n        codePoint >> 0x12 | 0xF0,\n        codePoint >> 0xC & 0x3F | 0x80,\n        codePoint >> 0x6 & 0x3F | 0x80,\n        codePoint & 0x3F | 0x80\n      )\n    } else {\n      throw new Error('Invalid code point')\n    }\n  }\n\n  return bytes\n}\n\nfunction asciiToBytes (str) {\n  var byteArray = []\n  for (var i = 0; i < str.length; ++i) {\n    // Node's code seems to be doing this and not & 0x7F..\n    byteArray.push(str.charCodeAt(i) & 0xFF)\n  }\n  return byteArray\n}\n\nfunction utf16leToBytes (str, units) {\n  var c, hi, lo\n  var byteArray = []\n  for (var i = 0; i < str.length; ++i) {\n    if ((units -= 2) < 0) break\n\n    c = str.charCodeAt(i)\n    hi = c >> 8\n    lo = c % 256\n    byteArray.push(lo)\n    byteArray.push(hi)\n  }\n\n  return byteArray\n}\n\nfunction base64ToBytes (str) {\n  return base64.toByteArray(base64clean(str))\n}\n\nfunction blitBuffer (src, dst, offset, length) {\n  for (var i = 0; i < length; ++i) {\n    if ((i + offset >= dst.length) || (i >= src.length)) break\n    dst[i + offset] = src[i]\n  }\n  return i\n}\n\nfunction isnan (val) {\n  return val !== val // eslint-disable-line no-self-compare\n}\n","/*! ieee754. BSD-3-Clause License. Feross Aboukhadijeh <https://feross.org/opensource> */\nexports.read = function (buffer, offset, isLE, mLen, nBytes) {\n  var e, m\n  var eLen = (nBytes * 8) - mLen - 1\n  var eMax = (1 << eLen) - 1\n  var eBias = eMax >> 1\n  var nBits = -7\n  var i = isLE ? (nBytes - 1) : 0\n  var d = isLE ? -1 : 1\n  var s = buffer[offset + i]\n\n  i += d\n\n  e = s & ((1 << (-nBits)) - 1)\n  s >>= (-nBits)\n  nBits += eLen\n  for (; nBits > 0; e = (e * 256) + buffer[offset + i], i += d, nBits -= 8) {}\n\n  m = e & ((1 << (-nBits)) - 1)\n  e >>= (-nBits)\n  nBits += mLen\n  for (; nBits > 0; m = (m * 256) + buffer[offset + i], i += d, nBits -= 8) {}\n\n  if (e === 0) {\n    e = 1 - eBias\n  } else if (e === eMax) {\n    return m ? NaN : ((s ? -1 : 1) * Infinity)\n  } else {\n    m = m + Math.pow(2, mLen)\n    e = e - eBias\n  }\n  return (s ? -1 : 1) * m * Math.pow(2, e - mLen)\n}\n\nexports.write = function (buffer, value, offset, isLE, mLen, nBytes) {\n  var e, m, c\n  var eLen = (nBytes * 8) - mLen - 1\n  var eMax = (1 << eLen) - 1\n  var eBias = eMax >> 1\n  var rt = (mLen === 23 ? Math.pow(2, -24) - Math.pow(2, -77) : 0)\n  var i = isLE ? 0 : (nBytes - 1)\n  var d = isLE ? 1 : -1\n  var s = value < 0 || (value === 0 && 1 / value < 0) ? 1 : 0\n\n  value = Math.abs(value)\n\n  if (isNaN(value) || value === Infinity) {\n    m = isNaN(value) ? 1 : 0\n    e = eMax\n  } else {\n    e = Math.floor(Math.log(value) / Math.LN2)\n    if (value * (c = Math.pow(2, -e)) < 1) {\n      e--\n      c *= 2\n    }\n    if (e + eBias >= 1) {\n      value += rt / c\n    } else {\n      value += rt * Math.pow(2, 1 - eBias)\n    }\n    if (value * c >= 2) {\n      e++\n      c /= 2\n    }\n\n    if (e + eBias >= eMax) {\n      m = 0\n      e = eMax\n    } else if (e + eBias >= 1) {\n      m = ((value * c) - 1) * Math.pow(2, mLen)\n      e = e + eBias\n    } else {\n      m = value * Math.pow(2, eBias - 1) * Math.pow(2, mLen)\n      e = 0\n    }\n  }\n\n  for (; mLen >= 8; buffer[offset + i] = m & 0xff, i += d, m /= 256, mLen -= 8) {}\n\n  e = (e << mLen) | m\n  eLen += mLen\n  for (; eLen > 0; buffer[offset + i] = e & 0xff, i += d, e /= 256, eLen -= 8) {}\n\n  buffer[offset + i - d] |= s * 128\n}\n","'use strict'\n\nconst { StringPrototypeSlice, SymbolIterator, TypedArrayPrototypeSet, Uint8Array } = require('../../ours/primordials')\nconst { Buffer } = require('buffer')\nconst { inspect } = require('../../ours/util')\nmodule.exports = class BufferList {\n  constructor() {\n    this.head = null\n    this.tail = null\n    this.length = 0\n  }\n  push(v) {\n    const entry = {\n      data: v,\n      next: null\n    }\n    if (this.length > 0) this.tail.next = entry\n    else this.head = entry\n    this.tail = entry\n    ++this.length\n  }\n  unshift(v) {\n    const entry = {\n      data: v,\n      next: this.head\n    }\n    if (this.length === 0) this.tail = entry\n    this.head = entry\n    ++this.length\n  }\n  shift() {\n    if (this.length === 0) return\n    const ret = this.head.data\n    if (this.length === 1) this.head = this.tail = null\n    else this.head = this.head.next\n    --this.length\n    return ret\n  }\n  clear() {\n    this.head = this.tail = null\n    this.length = 0\n  }\n  join(s) {\n    if (this.length === 0) return ''\n    let p = this.head\n    let ret = '' + p.data\n    while ((p = p.next) !== null) ret += s + p.data\n    return ret\n  }\n  concat(n) {\n    if (this.length === 0) return Buffer.alloc(0)\n    const ret = Buffer.allocUnsafe(n >>> 0)\n    let p = this.head\n    let i = 0\n    while (p) {\n      TypedArrayPrototypeSet(ret, p.data, i)\n      i += p.data.length\n      p = p.next\n    }\n    return ret\n  }\n\n  // Consumes a specified amount of bytes or characters from the buffered data.\n  consume(n, hasStrings) {\n    const data = this.head.data\n    if (n < data.length) {\n      // `slice` is the same for buffers and strings.\n      const slice = data.slice(0, n)\n      this.head.data = data.slice(n)\n      return slice\n    }\n    if (n === data.length) {\n      // First chunk is a perfect match.\n      return this.shift()\n    }\n    // Result spans more than one buffer.\n    return hasStrings ? this._getString(n) : this._getBuffer(n)\n  }\n  first() {\n    return this.head.data\n  }\n  *[SymbolIterator]() {\n    for (let p = this.head; p; p = p.next) {\n      yield p.data\n    }\n  }\n\n  // Consumes a specified amount of characters from the buffered data.\n  _getString(n) {\n    let ret = ''\n    let p = this.head\n    let c = 0\n    do {\n      const str = p.data\n      if (n > str.length) {\n        ret += str\n        n -= str.length\n      } else {\n        if (n === str.length) {\n          ret += str\n          ++c\n          if (p.next) this.head = p.next\n          else this.head = this.tail = null\n        } else {\n          ret += StringPrototypeSlice(str, 0, n)\n          this.head = p\n          p.data = StringPrototypeSlice(str, n)\n        }\n        break\n      }\n      ++c\n    } while ((p = p.next) !== null)\n    this.length -= c\n    return ret\n  }\n\n  // Consumes a specified amount of bytes from the buffered data.\n  _getBuffer(n) {\n    const ret = Buffer.allocUnsafe(n)\n    const retLen = n\n    let p = this.head\n    let c = 0\n    do {\n      const buf = p.data\n      if (n > buf.length) {\n        TypedArrayPrototypeSet(ret, buf, retLen - n)\n        n -= buf.length\n      } else {\n        if (n === buf.length) {\n          TypedArrayPrototypeSet(ret, buf, retLen - n)\n          ++c\n          if (p.next) this.head = p.next\n          else this.head = this.tail = null\n        } else {\n          TypedArrayPrototypeSet(ret, new Uint8Array(buf.buffer, buf.byteOffset, n), retLen - n)\n          this.head = p\n          p.data = buf.slice(n)\n        }\n        break\n      }\n      ++c\n    } while ((p = p.next) !== null)\n    this.length -= c\n    return ret\n  }\n\n  // Make sure the linked list only shows the minimal necessary information.\n  [Symbol.for('nodejs.util.inspect.custom')](_, options) {\n    return inspect(this, {\n      ...options,\n      // Only inspect one level.\n      depth: 0,\n      // It should not recurse.\n      customInspect: false\n    })\n  }\n}\n"],"sourceRoot":"webpack:///"}