879cdb2e8ed31dd0fb23dc0b9cbf8a3d9ef32bed51863b0af1b0d45722895314.json raw

   1  {"ast":null,"code":"/*!\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 = 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;\nexports.Buffer = Buffer;\nexports.SlowBuffer = SlowBuffer;\nexports.INSPECT_MAX_BYTES = 50;\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();\nif (!Buffer.TYPED_ARRAY_SUPPORT && typeof console !== 'undefined' && typeof console.error === 'function') {\n  console.error('This browser lacks typed array (Uint8Array) support which is required by ' + '`buffer` v5.x. Use `buffer` v4.x if you require old browser support.');\n}\nfunction typedArraySupport() {\n  // Can typed array instances can be augmented?\n  try {\n    const arr = new Uint8Array(1);\n    const proto = {\n      foo: function () {\n        return 42;\n      }\n    };\n    Object.setPrototypeOf(proto, Uint8Array.prototype);\n    Object.setPrototypeOf(arr, proto);\n    return arr.foo() === 42;\n  } catch (e) {\n    return false;\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});\nObject.defineProperty(Buffer.prototype, 'offset', {\n  enumerable: true,\n  get: function () {\n    if (!Buffer.isBuffer(this)) return undefined;\n    return this.byteOffset;\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('The \"string\" argument must be of type string. Received type number');\n    }\n    return allocUnsafe(arg);\n  }\n  return from(arg, encodingOrOffset, length);\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  if (ArrayBuffer.isView(value)) {\n    return fromArrayView(value);\n  }\n  if (value == null) {\n    throw new TypeError('The first argument must be one of type string, Buffer, ArrayBuffer, Array, ' + 'or Array-like Object. Received type ' + typeof value);\n  }\n  if (isInstance(value, ArrayBuffer) || value && isInstance(value.buffer, ArrayBuffer)) {\n    return fromArrayBuffer(value, encodingOrOffset, length);\n  }\n  if (typeof SharedArrayBuffer !== 'undefined' && (isInstance(value, SharedArrayBuffer) || value && isInstance(value.buffer, SharedArrayBuffer))) {\n    return fromArrayBuffer(value, encodingOrOffset, length);\n  }\n  if (typeof value === 'number') {\n    throw new TypeError('The \"value\" argument must not be of type number. Received type number');\n  }\n  const valueOf = value.valueOf && value.valueOf();\n  if (valueOf != null && valueOf !== value) {\n    return Buffer.from(valueOf, encodingOrOffset, length);\n  }\n  const b = fromObject(value);\n  if (b) return b;\n  if (typeof Symbol !== 'undefined' && Symbol.toPrimitive != null && typeof value[Symbol.toPrimitive] === 'function') {\n    return Buffer.from(value[Symbol.toPrimitive]('string'), encodingOrOffset, length);\n  }\n  throw new TypeError('The first argument must be one of type string, Buffer, ArrayBuffer, Array, ' + 'or Array-like Object. Received type ' + typeof 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(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);\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}\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' ? createBuffer(size).fill(fill, encoding) : 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};\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};\nfunction fromString(string, encoding) {\n  if (typeof encoding !== 'string' || encoding === '') {\n    encoding = 'utf8';\n  }\n  if (!Buffer.isEncoding(encoding)) {\n    throw new TypeError('Unknown encoding: ' + encoding);\n  }\n  const length = byteLength(string, encoding) | 0;\n  let buf = createBuffer(length);\n  const actual = buf.write(string, encoding);\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  return buf;\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}\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}\nfunction fromArrayBuffer(array, byteOffset, length) {\n  if (byteOffset < 0 || array.byteLength < byteOffset) {\n    throw new RangeError('\"offset\" is outside of buffer bounds');\n  }\n  if (array.byteLength < byteOffset + (length || 0)) {\n    throw new RangeError('\"length\" is outside of buffer bounds');\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  return buf;\n}\nfunction fromObject(obj) {\n  if (Buffer.isBuffer(obj)) {\n    const len = checked(obj.length) | 0;\n    const buf = createBuffer(len);\n    if (buf.length === 0) {\n      return buf;\n    }\n    obj.copy(buf, 0, 0, len);\n    return buf;\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  if (obj.type === 'Buffer' && Array.isArray(obj.data)) {\n    return fromArrayLike(obj.data);\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 ' + 'size: 0x' + K_MAX_LENGTH.toString(16) + ' bytes');\n  }\n  return length | 0;\n}\nfunction SlowBuffer(length) {\n  if (+length != length) {\n    // eslint-disable-line eqeqeq\n    length = 0;\n  }\n  return Buffer.alloc(+length);\n}\nBuffer.isBuffer = function isBuffer(b) {\n  return b != null && b._isBuffer === true && b !== Buffer.prototype; // so Buffer.isBuffer(Buffer.prototype) will be false\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('The \"buf1\", \"buf2\" arguments must be one of type Buffer or Uint8Array');\n  }\n  if (a === b) return 0;\n  let x = a.length;\n  let y = b.length;\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  if (x < y) return -1;\n  if (y < x) return 1;\n  return 0;\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};\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  if (list.length === 0) {\n    return Buffer.alloc(0);\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  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(buffer, buf, pos);\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};\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('The \"string\" argument must be one of type string, Buffer, or ArrayBuffer. ' + 'Received type ' + typeof string);\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;\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  if (end === undefined || end > this.length) {\n    end = this.length;\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  if (end <= start) {\n    return '';\n  }\n  if (!encoding) encoding = 'utf8';\n  while (true) {\n    switch (encoding) {\n      case 'hex':\n        return hexSlice(this, start, end);\n      case 'utf8':\n      case 'utf-8':\n        return utf8Slice(this, start, end);\n      case 'ascii':\n        return asciiSlice(this, start, end);\n      case 'latin1':\n      case 'binary':\n        return latin1Slice(this, start, end);\n      case 'base64':\n        return base64Slice(this, start, end);\n      case 'ucs2':\n      case 'ucs-2':\n      case 'utf16le':\n      case 'utf-16le':\n        return utf16leSlice(this, start, end);\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;\nfunction swap(b, n, m) {\n  const i = b[n];\n  b[n] = b[m];\n  b[m] = i;\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};\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};\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};\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};\nBuffer.prototype.toLocaleString = Buffer.prototype.toString;\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};\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}\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('The \"target\" argument must be one of type Buffer or Uint8Array. ' + 'Received type ' + typeof target);\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  if (start < 0 || end > target.length || thisStart < 0 || thisEnd > this.length) {\n    throw new RangeError('out of range index');\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  start >>>= 0;\n  end >>>= 0;\n  thisStart >>>= 0;\n  thisEnd >>>= 0;\n  if (this === target) return 0;\n  let x = thisEnd - thisStart;\n  let y = end - start;\n  const len = Math.min(x, y);\n  const thisCopy = this.slice(thisStart, thisEnd);\n  const targetCopy = target.slice(start, end);\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  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;else byteOffset = buffer.length - 1;\n  } else if (byteOffset < 0) {\n    if (dir) byteOffset = 0;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  throw new TypeError('val must be string, number or Buffer');\n}\nfunction arrayIndexOf(arr, val, byteOffset, encoding, dir) {\n  let indexSize = 1;\n  let arrLength = arr.length;\n  let valLength = val.length;\n  if (encoding !== undefined) {\n    encoding = String(encoding).toLowerCase();\n    if (encoding === 'ucs2' || encoding === 'ucs-2' || 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  function read(buf, i) {\n    if (indexSize === 1) {\n      return buf[i];\n    } else {\n      return buf.readUInt16BE(i * indexSize);\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  return -1;\n}\nBuffer.prototype.includes = function includes(val, byteOffset, encoding) {\n  return this.indexOf(val, byteOffset, encoding) !== -1;\n};\nBuffer.prototype.indexOf = function indexOf(val, byteOffset, encoding) {\n  return bidirectionalIndexOf(this, val, byteOffset, encoding, true);\n};\nBuffer.prototype.lastIndexOf = function lastIndexOf(val, byteOffset, encoding) {\n  return bidirectionalIndexOf(this, val, byteOffset, encoding, false);\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  const strLen = string.length;\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}\nfunction utf8Write(buf, string, offset, length) {\n  return blitBuffer(utf8ToBytes(string, buf.length - offset), buf, offset, length);\n}\nfunction asciiWrite(buf, string, offset, length) {\n  return blitBuffer(asciiToBytes(string), buf, offset, length);\n}\nfunction base64Write(buf, string, offset, length) {\n  return blitBuffer(base64ToBytes(string), buf, offset, length);\n}\nfunction ucs2Write(buf, string, offset, length) {\n  return blitBuffer(utf16leToBytes(string, buf.length - offset), buf, offset, length);\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('Buffer.write(string, encoding, offset[, length]) is no longer supported');\n  }\n  const remaining = this.length - offset;\n  if (length === undefined || length > remaining) length = remaining;\n  if (string.length > 0 && (length < 0 || offset < 0) || offset > this.length) {\n    throw new RangeError('Attempt to write outside buffer bounds');\n  }\n  if (!encoding) encoding = 'utf8';\n  let loweredCase = false;\n  for (;;) {\n    switch (encoding) {\n      case 'hex':\n        return hexWrite(this, string, offset, length);\n      case 'utf8':\n      case 'utf-8':\n        return utf8Write(this, string, offset, length);\n      case 'ascii':\n      case 'latin1':\n      case 'binary':\n        return asciiWrite(this, string, offset, length);\n      case 'base64':\n        // Warning: maxLength not taken into account in base64Write\n        return base64Write(this, string, offset, length);\n      case 'ucs2':\n      case 'ucs-2':\n      case 'utf16le':\n      case 'utf-16le':\n        return ucs2Write(this, string, offset, length);\n      default:\n        if (loweredCase) throw new TypeError('Unknown encoding: ' + encoding);\n        encoding = ('' + encoding).toLowerCase();\n        loweredCase = true;\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};\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}\nfunction utf8Slice(buf, start, end) {\n  end = Math.min(buf.length, end);\n  const res = [];\n  let i = start;\n  while (i < end) {\n    const firstByte = buf[i];\n    let codePoint = null;\n    let bytesPerSequence = firstByte > 0xEF ? 4 : firstByte > 0xDF ? 3 : firstByte > 0xBF ? 2 : 1;\n    if (i + bytesPerSequence <= end) {\n      let secondByte, thirdByte, fourthByte, tempCodePoint;\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    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    res.push(codePoint);\n    i += bytesPerSequence;\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;\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(String, codePoints.slice(i, i += MAX_ARGUMENTS_LENGTH));\n  }\n  return res;\n}\nfunction asciiSlice(buf, start, end) {\n  let ret = '';\n  end = Math.min(buf.length, end);\n  for (let i = start; i < end; ++i) {\n    ret += String.fromCharCode(buf[i] & 0x7F);\n  }\n  return ret;\n}\nfunction latin1Slice(buf, start, end) {\n  let ret = '';\n  end = Math.min(buf.length, end);\n  for (let i = start; i < end; ++i) {\n    ret += String.fromCharCode(buf[i]);\n  }\n  return ret;\n}\nfunction hexSlice(buf, start, end) {\n  const len = buf.length;\n  if (!start || start < 0) start = 0;\n  if (!end || end < 0 || end > len) end = len;\n  let out = '';\n  for (let i = start; i < end; ++i) {\n    out += hexSliceLookupTable[buf[i]];\n  }\n  return out;\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}\nBuffer.prototype.slice = function slice(start, end) {\n  const len = this.length;\n  start = ~~start;\n  end = end === undefined ? len : ~~end;\n  if (start < 0) {\n    start += len;\n    if (start < 0) start = 0;\n  } else if (start > len) {\n    start = len;\n  }\n  if (end < 0) {\n    end += len;\n    if (end < 0) end = 0;\n  } else if (end > len) {\n    end = len;\n  }\n  if (end < start) end = start;\n  const newBuf = this.subarray(start, end);\n  // Return an augmented `Uint8Array` instance\n  Object.setPrototypeOf(newBuf, Buffer.prototype);\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}\nBuffer.prototype.readUintLE = Buffer.prototype.readUIntLE = function readUIntLE(offset, byteLength, noAssert) {\n  offset = offset >>> 0;\n  byteLength = byteLength >>> 0;\n  if (!noAssert) checkOffset(offset, byteLength, this.length);\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  return val;\n};\nBuffer.prototype.readUintBE = Buffer.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  let val = this[offset + --byteLength];\n  let mul = 1;\n  while (byteLength > 0 && (mul *= 0x100)) {\n    val += this[offset + --byteLength] * mul;\n  }\n  return val;\n};\nBuffer.prototype.readUint8 = Buffer.prototype.readUInt8 = function readUInt8(offset, noAssert) {\n  offset = offset >>> 0;\n  if (!noAssert) checkOffset(offset, 1, this.length);\n  return this[offset];\n};\nBuffer.prototype.readUint16LE = Buffer.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};\nBuffer.prototype.readUint16BE = Buffer.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};\nBuffer.prototype.readUint32LE = Buffer.prototype.readUInt32LE = function readUInt32LE(offset, noAssert) {\n  offset = offset >>> 0;\n  if (!noAssert) checkOffset(offset, 4, this.length);\n  return (this[offset] | this[offset + 1] << 8 | this[offset + 2] << 16) + this[offset + 3] * 0x1000000;\n};\nBuffer.prototype.readUint32BE = Buffer.prototype.readUInt32BE = function readUInt32BE(offset, noAssert) {\n  offset = offset >>> 0;\n  if (!noAssert) checkOffset(offset, 4, this.length);\n  return this[offset] * 0x1000000 + (this[offset + 1] << 16 | this[offset + 2] << 8 | this[offset + 3]);\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  const lo = first + this[++offset] * 2 ** 8 + this[++offset] * 2 ** 16 + this[++offset] * 2 ** 24;\n  const hi = this[++offset] + this[++offset] * 2 ** 8 + this[++offset] * 2 ** 16 + last * 2 ** 24;\n  return BigInt(lo) + (BigInt(hi) << BigInt(32));\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  const hi = first * 2 ** 24 + this[++offset] * 2 ** 16 + this[++offset] * 2 ** 8 + this[++offset];\n  const lo = this[++offset] * 2 ** 24 + this[++offset] * 2 ** 16 + this[++offset] * 2 ** 8 + last;\n  return (BigInt(hi) << BigInt(32)) + BigInt(lo);\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  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  if (val >= mul) val -= Math.pow(2, 8 * byteLength);\n  return val;\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  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  if (val >= mul) val -= Math.pow(2, 8 * byteLength);\n  return val;\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};\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};\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};\nBuffer.prototype.readInt32LE = function readInt32LE(offset, noAssert) {\n  offset = offset >>> 0;\n  if (!noAssert) checkOffset(offset, 4, this.length);\n  return this[offset] | this[offset + 1] << 8 | this[offset + 2] << 16 | this[offset + 3] << 24;\n};\nBuffer.prototype.readInt32BE = function readInt32BE(offset, noAssert) {\n  offset = offset >>> 0;\n  if (!noAssert) checkOffset(offset, 4, this.length);\n  return this[offset] << 24 | this[offset + 1] << 16 | this[offset + 2] << 8 | this[offset + 3];\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  const val = this[offset + 4] + this[offset + 5] * 2 ** 8 + this[offset + 6] * 2 ** 16 + (last << 24); // Overflow\n\n  return (BigInt(val) << BigInt(32)) + BigInt(first + this[++offset] * 2 ** 8 + this[++offset] * 2 ** 16 + this[++offset] * 2 ** 24);\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  const val = (first << 24) +\n  // Overflow\n  this[++offset] * 2 ** 16 + this[++offset] * 2 ** 8 + this[++offset];\n  return (BigInt(val) << BigInt(32)) + BigInt(this[++offset] * 2 ** 24 + this[++offset] * 2 ** 16 + this[++offset] * 2 ** 8 + last);\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};\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};\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};\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};\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}\nBuffer.prototype.writeUintLE = Buffer.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  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  return offset + byteLength;\n};\nBuffer.prototype.writeUintBE = Buffer.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  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  return offset + byteLength;\n};\nBuffer.prototype.writeUint8 = Buffer.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};\nBuffer.prototype.writeUint16LE = Buffer.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};\nBuffer.prototype.writeUint16BE = Buffer.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};\nBuffer.prototype.writeUint32LE = Buffer.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};\nBuffer.prototype.writeUint32BE = Buffer.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};\nfunction wrtBigUInt64LE(buf, value, offset, min, max) {\n  checkIntBI(value, min, max, buf, offset, 7);\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}\nfunction wrtBigUInt64BE(buf, value, offset, min, max) {\n  checkIntBI(value, min, max, buf, offset, 7);\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}\nBuffer.prototype.writeBigUInt64LE = defineBigIntMethod(function writeBigUInt64LE(value, offset = 0) {\n  return wrtBigUInt64LE(this, value, offset, BigInt(0), BigInt('0xffffffffffffffff'));\n});\nBuffer.prototype.writeBigUInt64BE = defineBigIntMethod(function writeBigUInt64BE(value, offset = 0) {\n  return wrtBigUInt64BE(this, value, offset, BigInt(0), BigInt('0xffffffffffffffff'));\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    checkInt(this, value, offset, byteLength, limit - 1, -limit);\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  return offset + byteLength;\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    checkInt(this, value, offset, byteLength, limit - 1, -limit);\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  return offset + byteLength;\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};\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};\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};\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};\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};\nBuffer.prototype.writeBigInt64LE = defineBigIntMethod(function writeBigInt64LE(value, offset = 0) {\n  return wrtBigUInt64LE(this, value, offset, -BigInt('0x8000000000000000'), BigInt('0x7fffffffffffffff'));\n});\nBuffer.prototype.writeBigInt64BE = defineBigIntMethod(function writeBigInt64BE(value, offset = 0) {\n  return wrtBigUInt64BE(this, value, offset, -BigInt('0x8000000000000000'), BigInt('0x7fffffffffffffff'));\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}\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}\nBuffer.prototype.writeFloatLE = function writeFloatLE(value, offset, noAssert) {\n  return writeFloat(this, value, offset, true, noAssert);\n};\nBuffer.prototype.writeFloatBE = function writeFloatBE(value, offset, noAssert) {\n  return writeFloat(this, value, offset, false, noAssert);\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}\nBuffer.prototype.writeDoubleLE = function writeDoubleLE(value, offset, noAssert) {\n  return writeDouble(this, value, offset, true, noAssert);\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  const len = end - start;\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(target, this.subarray(start, end), targetStart);\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 || 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  if (end <= start) {\n    return this;\n  }\n  start = start >>> 0;\n  end = end === undefined ? this.length : end >>> 0;\n  if (!val) val = 0;\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) ? val : Buffer.from(val, encoding);\n    const len = bytes.length;\n    if (len === 0) {\n      throw new TypeError('The value \"' + val + '\" is invalid for argument \"value\"');\n    }\n    for (i = 0; i < end - start; ++i) {\n      this[i + start] = bytes[i % len];\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      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} [${sym}]`;\n      // Access the stack to generate the error message including the error code\n      // from the name.\n      this.stack; // eslint-disable-line no-unused-expressions\n      // Reset the name to the actual name.\n      delete this.name;\n    }\n    get code() {\n      return sym;\n    }\n    set code(value) {\n      Object.defineProperty(this, 'code', {\n        configurable: true,\n        enumerable: true,\n        value,\n        writable: true\n      });\n    }\n    toString() {\n      return `${this.name} [${sym}]: ${this.message}`;\n    }\n  };\n}\nE('ERR_BUFFER_OUT_OF_BOUNDS', function (name) {\n  if (name) {\n    return `${name} is outside of buffer bounds`;\n  }\n  return 'Attempt to access memory outside buffer bounds';\n}, RangeError);\nE('ERR_INVALID_ARG_TYPE', function (name, actual) {\n  return `The \"${name}\" argument must be of type number. Received type ${typeof actual}`;\n}, TypeError);\nE('ERR_OUT_OF_RANGE', function (str, range, input) {\n  let msg = `The value of \"${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 ${received}`;\n  return msg;\n}, RangeError);\nfunction addNumericalSeparator(val) {\n  let res = '';\n  let i = val.length;\n  const start = val[0] === '-' ? 1 : 0;\n  for (; i >= start + 4; i -= 3) {\n    res = `_${val.slice(i - 3, i)}${res}`;\n  }\n  return `${val.slice(0, i)}${res}`;\n}\n\n// CHECK FUNCTIONS\n// ===============\n\nfunction checkBounds(buf, offset, byteLength) {\n  validateNumber(offset, 'offset');\n  if (buf[offset] === undefined || buf[offset + byteLength] === undefined) {\n    boundsError(offset, buf.length - (byteLength + 1));\n  }\n}\nfunction checkIntBI(value, min, max, buf, offset, byteLength) {\n  if (value > max || value < min) {\n    const n = typeof min === 'bigint' ? 'n' : '';\n    let range;\n    if (byteLength > 3) {\n      if (min === 0 || min === BigInt(0)) {\n        range = `>= 0${n} and < 2${n} ** ${(byteLength + 1) * 8}${n}`;\n      } else {\n        range = `>= -(2${n} ** ${(byteLength + 1) * 8 - 1}${n}) and < 2 ** ` + `${(byteLength + 1) * 8 - 1}${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}\nfunction validateNumber(value, name) {\n  if (typeof value !== 'number') {\n    throw new errors.ERR_INVALID_ARG_TYPE(name, 'number', value);\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  if (length < 0) {\n    throw new errors.ERR_BUFFER_OUT_OF_BOUNDS();\n  }\n  throw new errors.ERR_OUT_OF_RANGE(type || 'offset', `>= ${type ? 1 : 0} and <= ${length}`, value);\n}\n\n// HELPER FUNCTIONS\n// ================\n\nconst INVALID_BASE64_RE = /[^+/0-9A-Za-z-_]/g;\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}\nfunction utf8ToBytes(string, units) {\n  units = units || Infinity;\n  let codePoint;\n  const length = string.length;\n  let leadSurrogate = null;\n  const bytes = [];\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        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    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(codePoint >> 0x6 | 0xC0, codePoint & 0x3F | 0x80);\n    } else if (codePoint < 0x10000) {\n      if ((units -= 3) < 0) break;\n      bytes.push(codePoint >> 0xC | 0xE0, codePoint >> 0x6 & 0x3F | 0x80, codePoint & 0x3F | 0x80);\n    } else if (codePoint < 0x110000) {\n      if ((units -= 4) < 0) break;\n      bytes.push(codePoint >> 0x12 | 0xF0, codePoint >> 0xC & 0x3F | 0x80, codePoint >> 0x6 & 0x3F | 0x80, codePoint & 0x3F | 0x80);\n    } else {\n      throw new Error('Invalid code point');\n    }\n  }\n  return bytes;\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}\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    c = str.charCodeAt(i);\n    hi = c >> 8;\n    lo = c % 256;\n    byteArray.push(lo);\n    byteArray.push(hi);\n  }\n  return byteArray;\n}\nfunction base64ToBytes(str) {\n  return base64.toByteArray(base64clean(str));\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 || obj != null && obj.constructor != null && obj.constructor.name != null && 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}\nfunction BufferBigIntNotDefined() {\n  throw new Error('BigInt not supported');\n}","map":null,"metadata":{},"sourceType":"script","externalDependencies":[]}