msgpackr/dist/node.cjs.map

Ultra-fast MessagePack implementation with extensions for records and structured cloning

{"version":3,"file":"node.cjs","sources":["../unpack.js","../pack.js","../struct.js","../stream.js","../iterators.js","../node-index.js"],"sourcesContent":["var decoder\ntry {\n\tdecoder = new TextDecoder()\n} catch(error) {}\nvar src\nvar srcEnd\nvar position = 0\nvar alreadySet\nconst EMPTY_ARRAY = []\nvar strings = EMPTY_ARRAY\nvar stringPosition = 0\nvar currentUnpackr = {}\nvar currentStructures\nvar srcString\nvar srcStringStart = 0\nvar srcStringEnd = 0\nvar bundledStrings\nvar referenceMap\nvar currentExtensions = []\nvar dataView\nvar defaultOptions = {\n\tuseRecords: false,\n\tmapsAsObjects: true\n}\nexport class C1Type {}\nexport const C1 = new C1Type()\nC1.name = 'MessagePack 0xC1'\nvar sequentialMode = false\nvar inlineObjectReadThreshold = 2\nvar readStruct, onLoadedStructures, onSaveState\nvar BlockedFunction // we use search and replace to change the next call to BlockedFunction to avoid CSP issues for\n// no-eval build\ntry {\n\tnew Function('')\n} catch(error) {\n\t// if eval variants are not supported, do not create inline object readers ever\n\tinlineObjectReadThreshold = Infinity\n}\n\nexport class Unpackr {\n\tconstructor(options) {\n\t\tif (options) {\n\t\t\tif (options.useRecords === false && options.mapsAsObjects === undefined)\n\t\t\t\toptions.mapsAsObjects = true\n\t\t\tif (options.sequential && options.trusted !== false) {\n\t\t\t\toptions.trusted = true;\n\t\t\t\tif (!options.structures && options.useRecords != false) {\n\t\t\t\t\toptions.structures = []\n\t\t\t\t\tif (!options.maxSharedStructures)\n\t\t\t\t\t\toptions.maxSharedStructures = 0\n\t\t\t\t}\n\t\t\t}\n\t\t\tif (options.structures)\n\t\t\t\toptions.structures.sharedLength = options.structures.length\n\t\t\telse if (options.getStructures) {\n\t\t\t\t(options.structures = []).uninitialized = true // this is what we use to denote an uninitialized structures\n\t\t\t\toptions.structures.sharedLength = 0\n\t\t\t}\n\t\t\tif (options.int64AsNumber) {\n\t\t\t\toptions.int64AsType = 'number'\n\t\t\t}\n\t\t}\n\t\tObject.assign(this, options)\n\t}\n\tunpack(source, options) {\n\t\tif (src) {\n\t\t\t// re-entrant execution, save the state and restore it after we do this unpack\n\t\t\treturn saveState(() => {\n\t\t\t\tclearSource()\n\t\t\t\treturn this ? this.unpack(source, options) : Unpackr.prototype.unpack.call(defaultOptions, source, options)\n\t\t\t})\n\t\t}\n\t\tif (!source.buffer && source.constructor === ArrayBuffer)\n\t\t\tsource = typeof Buffer !== 'undefined' ? Buffer.from(source) : new Uint8Array(source);\n\t\tif (typeof options === 'object') {\n\t\t\tsrcEnd = options.end || source.length\n\t\t\tposition = options.start || 0\n\t\t} else {\n\t\t\tposition = 0\n\t\t\tsrcEnd = options > -1 ? options : source.length\n\t\t}\n\t\tstringPosition = 0\n\t\tsrcStringEnd = 0\n\t\tsrcString = null\n\t\tstrings = EMPTY_ARRAY\n\t\tbundledStrings = null\n\t\tsrc = source\n\t\t// this provides cached access to the data view for a buffer if it is getting reused, which is a recommend\n\t\t// technique for getting data from a database where it can be copied into an existing buffer instead of creating\n\t\t// new ones\n\t\ttry {\n\t\t\tdataView = source.dataView || (source.dataView = new DataView(source.buffer, source.byteOffset, source.byteLength))\n\t\t} catch(error) {\n\t\t\t// if it doesn't have a buffer, maybe it is the wrong type of object\n\t\t\tsrc = null\n\t\t\tif (source instanceof Uint8Array)\n\t\t\t\tthrow error\n\t\t\tthrow new Error('Source must be a Uint8Array or Buffer but was a ' + ((source && typeof source == 'object') ? source.constructor.name : typeof source))\n\t\t}\n\t\tif (this instanceof Unpackr) {\n\t\t\tcurrentUnpackr = this\n\t\t\tif (this.structures) {\n\t\t\t\tcurrentStructures = this.structures\n\t\t\t\treturn checkedRead(options)\n\t\t\t} else if (!currentStructures || currentStructures.length > 0) {\n\t\t\t\tcurrentStructures = []\n\t\t\t}\n\t\t} else {\n\t\t\tcurrentUnpackr = defaultOptions\n\t\t\tif (!currentStructures || currentStructures.length > 0)\n\t\t\t\tcurrentStructures = []\n\t\t}\n\t\treturn checkedRead(options)\n\t}\n\tunpackMultiple(source, forEach) {\n\t\tlet values, lastPosition = 0\n\t\ttry {\n\t\t\tsequentialMode = true\n\t\t\tlet size = source.length\n\t\t\tlet value = this ? this.unpack(source, size) : defaultUnpackr.unpack(source, size)\n\t\t\tif (forEach) {\n\t\t\t\tif (forEach(value, lastPosition, position) === false) return;\n\t\t\t\twhile(position < size) {\n\t\t\t\t\tlastPosition = position\n\t\t\t\t\tif (forEach(checkedRead(), lastPosition, position) === false) {\n\t\t\t\t\t\treturn\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\t\t\telse {\n\t\t\t\tvalues = [ value ]\n\t\t\t\twhile(position < size) {\n\t\t\t\t\tlastPosition = position\n\t\t\t\t\tvalues.push(checkedRead())\n\t\t\t\t}\n\t\t\t\treturn values\n\t\t\t}\n\t\t} catch(error) {\n\t\t\terror.lastPosition = lastPosition\n\t\t\terror.values = values\n\t\t\tthrow error\n\t\t} finally {\n\t\t\tsequentialMode = false\n\t\t\tclearSource()\n\t\t}\n\t}\n\t_mergeStructures(loadedStructures, existingStructures) {\n\t\tif (onLoadedStructures)\n\t\t\tloadedStructures = onLoadedStructures.call(this, loadedStructures);\n\t\tloadedStructures = loadedStructures || []\n\t\tif (Object.isFrozen(loadedStructures))\n\t\t\tloadedStructures = loadedStructures.map(structure => structure.slice(0))\n\t\tfor (let i = 0, l = loadedStructures.length; i < l; i++) {\n\t\t\tlet structure = loadedStructures[i]\n\t\t\tif (structure) {\n\t\t\t\tstructure.isShared = true\n\t\t\t\tif (i >= 32)\n\t\t\t\t\tstructure.highByte = (i - 32) >> 5\n\t\t\t}\n\t\t}\n\t\tloadedStructures.sharedLength = loadedStructures.length\n\t\tfor (let id in existingStructures || []) {\n\t\t\tif (id >= 0) {\n\t\t\t\tlet structure = loadedStructures[id]\n\t\t\t\tlet existing = existingStructures[id]\n\t\t\t\tif (existing) {\n\t\t\t\t\tif (structure)\n\t\t\t\t\t\t(loadedStructures.restoreStructures || (loadedStructures.restoreStructures = []))[id] = structure\n\t\t\t\t\tloadedStructures[id] = existing\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t\treturn this.structures = loadedStructures\n\t}\n\tdecode(source, options) {\n\t\treturn this.unpack(source, options)\n\t}\n}\nexport function getPosition() {\n\treturn position\n}\nexport function checkedRead(options) {\n\ttry {\n\t\tif (!currentUnpackr.trusted && !sequentialMode) {\n\t\t\tlet sharedLength = currentStructures.sharedLength || 0\n\t\t\tif (sharedLength < currentStructures.length)\n\t\t\t\tcurrentStructures.length = sharedLength\n\t\t}\n\t\tlet result\n\t\tif (currentUnpackr.randomAccessStructure && src[position] < 0x40 && src[position] >= 0x20 && readStruct) {\n\t\t\tresult = readStruct(src, position, srcEnd, currentUnpackr)\n\t\t\tsrc = null // dispose of this so that recursive unpack calls don't save state\n\t\t\tif (!(options && options.lazy) && result)\n\t\t\t\tresult = result.toJSON()\n\t\t\tposition = srcEnd\n\t\t} else\n\t\t\tresult = read()\n\t\tif (bundledStrings) { // bundled strings to skip past\n\t\t\tposition = bundledStrings.postBundlePosition\n\t\t\tbundledStrings = null\n\t\t}\n\t\tif (sequentialMode)\n\t\t\t// we only need to restore the structures if there was an error, but if we completed a read,\n\t\t\t// we can clear this out and keep the structures we read\n\t\t\tcurrentStructures.restoreStructures = null\n\n\t\tif (position == srcEnd) {\n\t\t\t// finished reading this source, cleanup references\n\t\t\tif (currentStructures && currentStructures.restoreStructures)\n\t\t\t\trestoreStructures()\n\t\t\tcurrentStructures = null\n\t\t\tsrc = null\n\t\t\tif (referenceMap)\n\t\t\t\treferenceMap = null\n\t\t} else if (position > srcEnd) {\n\t\t\t// over read\n\t\t\tthrow new Error('Unexpected end of MessagePack data')\n\t\t} else if (!sequentialMode) {\n\t\t\tlet jsonView;\n\t\t\ttry {\n\t\t\t\tjsonView = JSON.stringify(result, (_, value) => typeof value === \"bigint\" ? `${value}n` : value).slice(0, 100)\n\t\t\t} catch(error) {\n\t\t\t\tjsonView = '(JSON view not available ' + error + ')'\n\t\t\t}\n\t\t\tthrow new Error('Data read, but end of buffer not reached ' + jsonView)\n\t\t}\n\t\t// else more to read, but we are reading sequentially, so don't clear source yet\n\t\treturn result\n\t} catch(error) {\n\t\tif (currentStructures && currentStructures.restoreStructures)\n\t\t\trestoreStructures()\n\t\tclearSource()\n\t\tif (error instanceof RangeError || error.message.startsWith('Unexpected end of buffer') || position > srcEnd) {\n\t\t\terror.incomplete = true\n\t\t}\n\t\tthrow error\n\t}\n}\n\nfunction restoreStructures() {\n\tfor (let id in currentStructures.restoreStructures) {\n\t\tcurrentStructures[id] = currentStructures.restoreStructures[id]\n\t}\n\tcurrentStructures.restoreStructures = null\n}\n\nexport function read() {\n\tlet token = src[position++]\n\tif (token < 0xa0) {\n\t\tif (token < 0x80) {\n\t\t\tif (token < 0x40)\n\t\t\t\treturn token\n\t\t\telse {\n\t\t\t\tlet structure = currentStructures[token & 0x3f] ||\n\t\t\t\t\tcurrentUnpackr.getStructures && loadStructures()[token & 0x3f]\n\t\t\t\tif (structure) {\n\t\t\t\t\tif (!structure.read) {\n\t\t\t\t\t\tstructure.read = createStructureReader(structure, token & 0x3f)\n\t\t\t\t\t}\n\t\t\t\t\treturn structure.read()\n\t\t\t\t} else\n\t\t\t\t\treturn token\n\t\t\t}\n\t\t} else if (token < 0x90) {\n\t\t\t// map\n\t\t\ttoken -= 0x80\n\t\t\tif (currentUnpackr.mapsAsObjects) {\n\t\t\t\tlet object = {}\n\t\t\t\tfor (let i = 0; i < token; i++) {\n\t\t\t\t\tlet key = readKey()\n\t\t\t\t\tif (key === '__proto__')\n\t\t\t\t\t\tkey = '__proto_'\n\t\t\t\t\tobject[key] = read()\n\t\t\t\t}\n\t\t\t\treturn object\n\t\t\t} else {\n\t\t\t\tlet map = new Map()\n\t\t\t\tfor (let i = 0; i < token; i++) {\n\t\t\t\t\tmap.set(read(), read())\n\t\t\t\t}\n\t\t\t\treturn map\n\t\t\t}\n\t\t} else {\n\t\t\ttoken -= 0x90\n\t\t\tlet array = new Array(token)\n\t\t\tfor (let i = 0; i < token; i++) {\n\t\t\t\tarray[i] = read()\n\t\t\t}\n\t\t\tif (currentUnpackr.freezeData)\n\t\t\t\treturn Object.freeze(array)\n\t\t\treturn array\n\t\t}\n\t} else if (token < 0xc0) {\n\t\t// fixstr\n\t\tlet length = token - 0xa0\n\t\tif (srcStringEnd >= position) {\n\t\t\treturn srcString.slice(position - srcStringStart, (position += length) - srcStringStart)\n\t\t}\n\t\tif (srcStringEnd == 0 && srcEnd < 140) {\n\t\t\t// for small blocks, avoiding the overhead of the extract call is helpful\n\t\t\tlet string = length < 16 ? shortStringInJS(length) : longStringInJS(length)\n\t\t\tif (string != null)\n\t\t\t\treturn string\n\t\t}\n\t\treturn readFixedString(length)\n\t} else {\n\t\tlet value\n\t\tswitch (token) {\n\t\t\tcase 0xc0: return null\n\t\t\tcase 0xc1:\n\t\t\t\tif (bundledStrings) {\n\t\t\t\t\tvalue = read() // followed by the length of the string in characters (not bytes!)\n\t\t\t\t\tif (value > 0)\n\t\t\t\t\t\treturn bundledStrings[1].slice(bundledStrings.position1, bundledStrings.position1 += value)\n\t\t\t\t\telse\n\t\t\t\t\t\treturn bundledStrings[0].slice(bundledStrings.position0, bundledStrings.position0 -= value)\n\t\t\t\t}\n\t\t\t\treturn C1; // \"never-used\", return special object to denote that\n\t\t\tcase 0xc2: return false\n\t\t\tcase 0xc3: return true\n\t\t\tcase 0xc4:\n\t\t\t\t// bin 8\n\t\t\t\tvalue = src[position++]\n\t\t\t\tif (value === undefined)\n\t\t\t\t\tthrow new Error('Unexpected end of buffer')\n\t\t\t\treturn readBin(value)\n\t\t\tcase 0xc5:\n\t\t\t\t// bin 16\n\t\t\t\tvalue = dataView.getUint16(position)\n\t\t\t\tposition += 2\n\t\t\t\treturn readBin(value)\n\t\t\tcase 0xc6:\n\t\t\t\t// bin 32\n\t\t\t\tvalue = dataView.getUint32(position)\n\t\t\t\tposition += 4\n\t\t\t\treturn readBin(value)\n\t\t\tcase 0xc7:\n\t\t\t\t// ext 8\n\t\t\t\treturn readExt(src[position++])\n\t\t\tcase 0xc8:\n\t\t\t\t// ext 16\n\t\t\t\tvalue = dataView.getUint16(position)\n\t\t\t\tposition += 2\n\t\t\t\treturn readExt(value)\n\t\t\tcase 0xc9:\n\t\t\t\t// ext 32\n\t\t\t\tvalue = dataView.getUint32(position)\n\t\t\t\tposition += 4\n\t\t\t\treturn readExt(value)\n\t\t\tcase 0xca:\n\t\t\t\tvalue = dataView.getFloat32(position)\n\t\t\t\tif (currentUnpackr.useFloat32 > 2) {\n\t\t\t\t\t// this does rounding of numbers that were encoded in 32-bit float to nearest significant decimal digit that could be preserved\n\t\t\t\t\tlet multiplier = mult10[((src[position] & 0x7f) << 1) | (src[position + 1] >> 7)]\n\t\t\t\t\tposition += 4\n\t\t\t\t\treturn ((multiplier * value + (value > 0 ? 0.5 : -0.5)) >> 0) / multiplier\n\t\t\t\t}\n\t\t\t\tposition += 4\n\t\t\t\treturn value\n\t\t\tcase 0xcb:\n\t\t\t\tvalue = dataView.getFloat64(position)\n\t\t\t\tposition += 8\n\t\t\t\treturn value\n\t\t\t// uint handlers\n\t\t\tcase 0xcc:\n\t\t\t\treturn src[position++]\n\t\t\tcase 0xcd:\n\t\t\t\tvalue = dataView.getUint16(position)\n\t\t\t\tposition += 2\n\t\t\t\treturn value\n\t\t\tcase 0xce:\n\t\t\t\tvalue = dataView.getUint32(position)\n\t\t\t\tposition += 4\n\t\t\t\treturn value\n\t\t\tcase 0xcf:\n\t\t\t\tif (currentUnpackr.int64AsType === 'number') {\n\t\t\t\t\tvalue = dataView.getUint32(position) * 0x100000000\n\t\t\t\t\tvalue += dataView.getUint32(position + 4)\n\t\t\t\t} else if (currentUnpackr.int64AsType === 'string') {\n\t\t\t\t\tvalue = dataView.getBigUint64(position).toString()\n\t\t\t\t} else if (currentUnpackr.int64AsType === 'auto') {\n\t\t\t\t\tvalue = dataView.getBigUint64(position)\n\t\t\t\t\tif (value<=BigInt(2)<<BigInt(52)) value=Number(value)\n\t\t\t\t} else\n\t\t\t\t\tvalue = dataView.getBigUint64(position)\n\t\t\t\tposition += 8\n\t\t\t\treturn value\n\n\t\t\t// int handlers\n\t\t\tcase 0xd0:\n\t\t\t\treturn dataView.getInt8(position++)\n\t\t\tcase 0xd1:\n\t\t\t\tvalue = dataView.getInt16(position)\n\t\t\t\tposition += 2\n\t\t\t\treturn value\n\t\t\tcase 0xd2:\n\t\t\t\tvalue = dataView.getInt32(position)\n\t\t\t\tposition += 4\n\t\t\t\treturn value\n\t\t\tcase 0xd3:\n\t\t\t\tif (currentUnpackr.int64AsType === 'number') {\n\t\t\t\t\tvalue = dataView.getInt32(position) * 0x100000000\n\t\t\t\t\tvalue += dataView.getUint32(position + 4)\n\t\t\t\t} else if (currentUnpackr.int64AsType === 'string') {\n\t\t\t\t\tvalue = dataView.getBigInt64(position).toString()\n\t\t\t\t} else if (currentUnpackr.int64AsType === 'auto') {\n\t\t\t\t\tvalue = dataView.getBigInt64(position)\n\t\t\t\t\tif (value>=BigInt(-2)<<BigInt(52)&&value<=BigInt(2)<<BigInt(52)) value=Number(value)\n\t\t\t\t} else\n\t\t\t\t\tvalue = dataView.getBigInt64(position)\n\t\t\t\tposition += 8\n\t\t\t\treturn value\n\n\t\t\tcase 0xd4:\n\t\t\t\t// fixext 1\n\t\t\t\tvalue = src[position++]\n\t\t\t\tif (value == 0x72) {\n\t\t\t\t\treturn recordDefinition(src[position++] & 0x3f)\n\t\t\t\t} else {\n\t\t\t\t\tlet extension = currentExtensions[value]\n\t\t\t\t\tif (extension) {\n\t\t\t\t\t\tif (extension.read) {\n\t\t\t\t\t\t\tposition++ // skip filler byte\n\t\t\t\t\t\t\treturn extension.read(read())\n\t\t\t\t\t\t} else if (extension.noBuffer) {\n\t\t\t\t\t\t\tposition++ // skip filler byte\n\t\t\t\t\t\t\treturn extension()\n\t\t\t\t\t\t} else\n\t\t\t\t\t\t\treturn extension(src.subarray(position, ++position))\n\t\t\t\t\t} else\n\t\t\t\t\t\tthrow new Error('Unknown extension ' + value)\n\t\t\t\t}\n\t\t\tcase 0xd5:\n\t\t\t\t// fixext 2\n\t\t\t\tvalue = src[position]\n\t\t\t\tif (value == 0x72) {\n\t\t\t\t\tposition++\n\t\t\t\t\treturn recordDefinition(src[position++] & 0x3f, src[position++])\n\t\t\t\t} else\n\t\t\t\t\treturn readExt(2)\n\t\t\tcase 0xd6:\n\t\t\t\t// fixext 4\n\t\t\t\treturn readExt(4)\n\t\t\tcase 0xd7:\n\t\t\t\t// fixext 8\n\t\t\t\treturn readExt(8)\n\t\t\tcase 0xd8:\n\t\t\t\t// fixext 16\n\t\t\t\treturn readExt(16)\n\t\t\tcase 0xd9:\n\t\t\t// str 8\n\t\t\t\tvalue = src[position++]\n\t\t\t\tif (srcStringEnd >= position) {\n\t\t\t\t\treturn srcString.slice(position - srcStringStart, (position += value) - srcStringStart)\n\t\t\t\t}\n\t\t\t\treturn readString8(value)\n\t\t\tcase 0xda:\n\t\t\t// str 16\n\t\t\t\tvalue = dataView.getUint16(position)\n\t\t\t\tposition += 2\n\t\t\t\tif (srcStringEnd >= position) {\n\t\t\t\t\treturn srcString.slice(position - srcStringStart, (position += value) - srcStringStart)\n\t\t\t\t}\n\t\t\t\treturn readString16(value)\n\t\t\tcase 0xdb:\n\t\t\t// str 32\n\t\t\t\tvalue = dataView.getUint32(position)\n\t\t\t\tposition += 4\n\t\t\t\tif (srcStringEnd >= position) {\n\t\t\t\t\treturn srcString.slice(position - srcStringStart, (position += value) - srcStringStart)\n\t\t\t\t}\n\t\t\t\treturn readString32(value)\n\t\t\tcase 0xdc:\n\t\t\t// array 16\n\t\t\t\tvalue = dataView.getUint16(position)\n\t\t\t\tposition += 2\n\t\t\t\treturn readArray(value)\n\t\t\tcase 0xdd:\n\t\t\t// array 32\n\t\t\t\tvalue = dataView.getUint32(position)\n\t\t\t\tposition += 4\n\t\t\t\treturn readArray(value)\n\t\t\tcase 0xde:\n\t\t\t// map 16\n\t\t\t\tvalue = dataView.getUint16(position)\n\t\t\t\tposition += 2\n\t\t\t\treturn readMap(value)\n\t\t\tcase 0xdf:\n\t\t\t// map 32\n\t\t\t\tvalue = dataView.getUint32(position)\n\t\t\t\tposition += 4\n\t\t\t\treturn readMap(value)\n\t\t\tdefault: // negative int\n\t\t\t\tif (token >= 0xe0)\n\t\t\t\t\treturn token - 0x100\n\t\t\t\tif (token === undefined) {\n\t\t\t\t\tlet error = new Error('Unexpected end of MessagePack data')\n\t\t\t\t\terror.incomplete = true\n\t\t\t\t\tthrow error\n\t\t\t\t}\n\t\t\t\tthrow new Error('Unknown MessagePack token ' + token)\n\n\t\t}\n\t}\n}\nconst validName = /^[a-zA-Z_$][a-zA-Z\\d_$]*$/\nfunction createStructureReader(structure, firstId) {\n\tfunction readObject() {\n\t\t// This initial function is quick to instantiate, but runs slower. After several iterations pay the cost to build the faster function\n\t\tif (readObject.count++ > inlineObjectReadThreshold) {\n\t\t\tlet readObject = structure.read = (new Function('r', 'return function(){return ' + (currentUnpackr.freezeData ? 'Object.freeze' : '') +\n\t\t\t\t'({' + structure.map(key => key === '__proto__' ? '__proto_:r()' : validName.test(key) ? key + ':r()' : ('[' + JSON.stringify(key) + ']:r()')).join(',') + '})}'))(read)\n\t\t\tif (structure.highByte === 0)\n\t\t\t\tstructure.read = createSecondByteReader(firstId, structure.read)\n\t\t\treturn readObject() // second byte is already read, if there is one so immediately read object\n\t\t}\n\t\tlet object = {}\n\t\tfor (let i = 0, l = structure.length; i < l; i++) {\n\t\t\tlet key = structure[i]\n\t\t\tif (key === '__proto__')\n\t\t\t\tkey = '__proto_'\n\t\t\tobject[key] = read()\n\t\t}\n\t\tif (currentUnpackr.freezeData)\n\t\t\treturn Object.freeze(object);\n\t\treturn object\n\t}\n\treadObject.count = 0\n\tif (structure.highByte === 0) {\n\t\treturn createSecondByteReader(firstId, readObject)\n\t}\n\treturn readObject\n}\n\nconst createSecondByteReader = (firstId, read0) => {\n\treturn function() {\n\t\tlet highByte = src[position++]\n\t\tif (highByte === 0)\n\t\t\treturn read0()\n\t\tlet id = firstId < 32 ? -(firstId + (highByte << 5)) : firstId + (highByte << 5)\n\t\tlet structure = currentStructures[id] || loadStructures()[id]\n\t\tif (!structure) {\n\t\t\tthrow new Error('Record id is not defined for ' + id)\n\t\t}\n\t\tif (!structure.read)\n\t\t\tstructure.read = createStructureReader(structure, firstId)\n\t\treturn structure.read()\n\t}\n}\n\nexport function loadStructures() {\n\tlet loadedStructures = saveState(() => {\n\t\t// save the state in case getStructures modifies our buffer\n\t\tsrc = null\n\t\treturn currentUnpackr.getStructures()\n\t})\n\treturn currentStructures = currentUnpackr._mergeStructures(loadedStructures, currentStructures)\n}\n\nvar readFixedString = readStringJS\nvar readString8 = readStringJS\nvar readString16 = readStringJS\nvar readString32 = readStringJS\nexport let isNativeAccelerationEnabled = false\n\nexport function setExtractor(extractStrings) {\n\tisNativeAccelerationEnabled = true\n\treadFixedString = readString(1)\n\treadString8 = readString(2)\n\treadString16 = readString(3)\n\treadString32 = readString(5)\n\tfunction readString(headerLength) {\n\t\treturn function readString(length) {\n\t\t\tlet string = strings[stringPosition++]\n\t\t\tif (string == null) {\n\t\t\t\tif (bundledStrings)\n\t\t\t\t\treturn readStringJS(length)\n\t\t\t\tlet byteOffset = src.byteOffset\n\t\t\t\tlet extraction = extractStrings(position - headerLength + byteOffset, srcEnd + byteOffset, src.buffer)\n\t\t\t\tif (typeof extraction == 'string') {\n\t\t\t\t\tstring = extraction\n\t\t\t\t\tstrings = EMPTY_ARRAY\n\t\t\t\t} else {\n\t\t\t\t\tstrings = extraction\n\t\t\t\t\tstringPosition = 1\n\t\t\t\t\tsrcStringEnd = 1 // even if a utf-8 string was decoded, must indicate we are in the midst of extracted strings and can't skip strings\n\t\t\t\t\tstring = strings[0]\n\t\t\t\t\tif (string === undefined)\n\t\t\t\t\t\tthrow new Error('Unexpected end of buffer')\n\t\t\t\t}\n\t\t\t}\n\t\t\tlet srcStringLength = string.length\n\t\t\tif (srcStringLength <= length) {\n\t\t\t\tposition += length\n\t\t\t\treturn string\n\t\t\t}\n\t\t\tsrcString = string\n\t\t\tsrcStringStart = position\n\t\t\tsrcStringEnd = position + srcStringLength\n\t\t\tposition += length\n\t\t\treturn string.slice(0, length) // we know we just want the beginning\n\t\t}\n\t}\n}\nfunction readStringJS(length) {\n\tlet result\n\tif (length < 16) {\n\t\tif (result = shortStringInJS(length))\n\t\t\treturn result\n\t}\n\tif (length > 64 && decoder)\n\t\treturn decoder.decode(src.subarray(position, position += length))\n\tconst end = position + length\n\tconst units = []\n\tresult = ''\n\twhile (position < end) {\n\t\tconst byte1 = src[position++]\n\t\tif ((byte1 & 0x80) === 0) {\n\t\t\t// 1 byte\n\t\t\tunits.push(byte1)\n\t\t} else if ((byte1 & 0xe0) === 0xc0) {\n\t\t\t// 2 bytes\n\t\t\tconst byte2 = src[position++] & 0x3f\n\t\t\tunits.push(((byte1 & 0x1f) << 6) | byte2)\n\t\t} else if ((byte1 & 0xf0) === 0xe0) {\n\t\t\t// 3 bytes\n\t\t\tconst byte2 = src[position++] & 0x3f\n\t\t\tconst byte3 = src[position++] & 0x3f\n\t\t\tunits.push(((byte1 & 0x1f) << 12) | (byte2 << 6) | byte3)\n\t\t} else if ((byte1 & 0xf8) === 0xf0) {\n\t\t\t// 4 bytes\n\t\t\tconst byte2 = src[position++] & 0x3f\n\t\t\tconst byte3 = src[position++] & 0x3f\n\t\t\tconst byte4 = src[position++] & 0x3f\n\t\t\tlet unit = ((byte1 & 0x07) << 0x12) | (byte2 << 0x0c) | (byte3 << 0x06) | byte4\n\t\t\tif (unit > 0xffff) {\n\t\t\t\tunit -= 0x10000\n\t\t\t\tunits.push(((unit >>> 10) & 0x3ff) | 0xd800)\n\t\t\t\tunit = 0xdc00 | (unit & 0x3ff)\n\t\t\t}\n\t\t\tunits.push(unit)\n\t\t} else {\n\t\t\tunits.push(byte1)\n\t\t}\n\n\t\tif (units.length >= 0x1000) {\n\t\t\tresult += fromCharCode.apply(String, units)\n\t\t\tunits.length = 0\n\t\t}\n\t}\n\n\tif (units.length > 0) {\n\t\tresult += fromCharCode.apply(String, units)\n\t}\n\n\treturn result\n}\nexport function readString(source, start, length) {\n\tlet existingSrc = src;\n\tsrc = source;\n\tposition = start;\n\ttry {\n\t\treturn readStringJS(length);\n\t} finally {\n\t\tsrc = existingSrc;\n\t}\n}\n\nfunction readArray(length) {\n\tlet array = new Array(length)\n\tfor (let i = 0; i < length; i++) {\n\t\tarray[i] = read()\n\t}\n\tif (currentUnpackr.freezeData)\n\t\treturn Object.freeze(array)\n\treturn array\n}\n\nfunction readMap(length) {\n\tif (currentUnpackr.mapsAsObjects) {\n\t\tlet object = {}\n\t\tfor (let i = 0; i < length; i++) {\n\t\t\tlet key = readKey()\n\t\t\tif (key === '__proto__')\n\t\t\t\tkey = '__proto_';\n\t\t\tobject[key] = read()\n\t\t}\n\t\treturn object\n\t} else {\n\t\tlet map = new Map()\n\t\tfor (let i = 0; i < length; i++) {\n\t\t\tmap.set(read(), read())\n\t\t}\n\t\treturn map\n\t}\n}\n\nvar fromCharCode = String.fromCharCode\nfunction longStringInJS(length) {\n\tlet start = position\n\tlet bytes = new Array(length)\n\tfor (let i = 0; i < length; i++) {\n\t\tconst byte = src[position++];\n\t\tif ((byte & 0x80) > 0) {\n\t\t\t\tposition = start\n\t\t\t\treturn\n\t\t\t}\n\t\t\tbytes[i] = byte\n\t\t}\n\t\treturn fromCharCode.apply(String, bytes)\n}\nfunction shortStringInJS(length) {\n\tif (length < 4) {\n\t\tif (length < 2) {\n\t\t\tif (length === 0)\n\t\t\t\treturn ''\n\t\t\telse {\n\t\t\t\tlet a = src[position++]\n\t\t\t\tif ((a & 0x80) > 1) {\n\t\t\t\t\tposition -= 1\n\t\t\t\t\treturn\n\t\t\t\t}\n\t\t\t\treturn fromCharCode(a)\n\t\t\t}\n\t\t} else {\n\t\t\tlet a = src[position++]\n\t\t\tlet b = src[position++]\n\t\t\tif ((a & 0x80) > 0 || (b & 0x80) > 0) {\n\t\t\t\tposition -= 2\n\t\t\t\treturn\n\t\t\t}\n\t\t\tif (length < 3)\n\t\t\t\treturn fromCharCode(a, b)\n\t\t\tlet c = src[position++]\n\t\t\tif ((c & 0x80) > 0) {\n\t\t\t\tposition -= 3\n\t\t\t\treturn\n\t\t\t}\n\t\t\treturn fromCharCode(a, b, c)\n\t\t}\n\t} else {\n\t\tlet a = src[position++]\n\t\tlet b = src[position++]\n\t\tlet c = src[position++]\n\t\tlet d = src[position++]\n\t\tif ((a & 0x80) > 0 || (b & 0x80) > 0 || (c & 0x80) > 0 || (d & 0x80) > 0) {\n\t\t\tposition -= 4\n\t\t\treturn\n\t\t}\n\t\tif (length < 6) {\n\t\t\tif (length === 4)\n\t\t\t\treturn fromCharCode(a, b, c, d)\n\t\t\telse {\n\t\t\t\tlet e = src[position++]\n\t\t\t\tif ((e & 0x80) > 0) {\n\t\t\t\t\tposition -= 5\n\t\t\t\t\treturn\n\t\t\t\t}\n\t\t\t\treturn fromCharCode(a, b, c, d, e)\n\t\t\t}\n\t\t} else if (length < 8) {\n\t\t\tlet e = src[position++]\n\t\t\tlet f = src[position++]\n\t\t\tif ((e & 0x80) > 0 || (f & 0x80) > 0) {\n\t\t\t\tposition -= 6\n\t\t\t\treturn\n\t\t\t}\n\t\t\tif (length < 7)\n\t\t\t\treturn fromCharCode(a, b, c, d, e, f)\n\t\t\tlet g = src[position++]\n\t\t\tif ((g & 0x80) > 0) {\n\t\t\t\tposition -= 7\n\t\t\t\treturn\n\t\t\t}\n\t\t\treturn fromCharCode(a, b, c, d, e, f, g)\n\t\t} else {\n\t\t\tlet e = src[position++]\n\t\t\tlet f = src[position++]\n\t\t\tlet g = src[position++]\n\t\t\tlet h = src[position++]\n\t\t\tif ((e & 0x80) > 0 || (f & 0x80) > 0 || (g & 0x80) > 0 || (h & 0x80) > 0) {\n\t\t\t\tposition -= 8\n\t\t\t\treturn\n\t\t\t}\n\t\t\tif (length < 10) {\n\t\t\t\tif (length === 8)\n\t\t\t\t\treturn fromCharCode(a, b, c, d, e, f, g, h)\n\t\t\t\telse {\n\t\t\t\t\tlet i = src[position++]\n\t\t\t\t\tif ((i & 0x80) > 0) {\n\t\t\t\t\t\tposition -= 9\n\t\t\t\t\t\treturn\n\t\t\t\t\t}\n\t\t\t\t\treturn fromCharCode(a, b, c, d, e, f, g, h, i)\n\t\t\t\t}\n\t\t\t} else if (length < 12) {\n\t\t\t\tlet i = src[position++]\n\t\t\t\tlet j = src[position++]\n\t\t\t\tif ((i & 0x80) > 0 || (j & 0x80) > 0) {\n\t\t\t\t\tposition -= 10\n\t\t\t\t\treturn\n\t\t\t\t}\n\t\t\t\tif (length < 11)\n\t\t\t\t\treturn fromCharCode(a, b, c, d, e, f, g, h, i, j)\n\t\t\t\tlet k = src[position++]\n\t\t\t\tif ((k & 0x80) > 0) {\n\t\t\t\t\tposition -= 11\n\t\t\t\t\treturn\n\t\t\t\t}\n\t\t\t\treturn fromCharCode(a, b, c, d, e, f, g, h, i, j, k)\n\t\t\t} else {\n\t\t\t\tlet i = src[position++]\n\t\t\t\tlet j = src[position++]\n\t\t\t\tlet k = src[position++]\n\t\t\t\tlet l = src[position++]\n\t\t\t\tif ((i & 0x80) > 0 || (j & 0x80) > 0 || (k & 0x80) > 0 || (l & 0x80) > 0) {\n\t\t\t\t\tposition -= 12\n\t\t\t\t\treturn\n\t\t\t\t}\n\t\t\t\tif (length < 14) {\n\t\t\t\t\tif (length === 12)\n\t\t\t\t\t\treturn fromCharCode(a, b, c, d, e, f, g, h, i, j, k, l)\n\t\t\t\t\telse {\n\t\t\t\t\t\tlet m = src[position++]\n\t\t\t\t\t\tif ((m & 0x80) > 0) {\n\t\t\t\t\t\t\tposition -= 13\n\t\t\t\t\t\t\treturn\n\t\t\t\t\t\t}\n\t\t\t\t\t\treturn fromCharCode(a, b, c, d, e, f, g, h, i, j, k, l, m)\n\t\t\t\t\t}\n\t\t\t\t} else {\n\t\t\t\t\tlet m = src[position++]\n\t\t\t\t\tlet n = src[position++]\n\t\t\t\t\tif ((m & 0x80) > 0 || (n & 0x80) > 0) {\n\t\t\t\t\t\tposition -= 14\n\t\t\t\t\t\treturn\n\t\t\t\t\t}\n\t\t\t\t\tif (length < 15)\n\t\t\t\t\t\treturn fromCharCode(a, b, c, d, e, f, g, h, i, j, k, l, m, n)\n\t\t\t\t\tlet o = src[position++]\n\t\t\t\t\tif ((o & 0x80) > 0) {\n\t\t\t\t\t\tposition -= 15\n\t\t\t\t\t\treturn\n\t\t\t\t\t}\n\t\t\t\t\treturn fromCharCode(a, b, c, d, e, f, g, h, i, j, k, l, m, n, o)\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t}\n}\n\nfunction readOnlyJSString() {\n\tlet token = src[position++]\n\tlet length\n\tif (token < 0xc0) {\n\t\t// fixstr\n\t\tlength = token - 0xa0\n\t} else {\n\t\tswitch(token) {\n\t\t\tcase 0xd9:\n\t\t\t// str 8\n\t\t\t\tlength = src[position++]\n\t\t\t\tbreak\n\t\t\tcase 0xda:\n\t\t\t// str 16\n\t\t\t\tlength = dataView.getUint16(position)\n\t\t\t\tposition += 2\n\t\t\t\tbreak\n\t\t\tcase 0xdb:\n\t\t\t// str 32\n\t\t\t\tlength = dataView.getUint32(position)\n\t\t\t\tposition += 4\n\t\t\t\tbreak\n\t\t\tdefault:\n\t\t\t\tthrow new Error('Expected string')\n\t\t}\n\t}\n\treturn readStringJS(length)\n}\n\n\nfunction readBin(length) {\n\treturn currentUnpackr.copyBuffers ?\n\t\t// specifically use the copying slice (not the node one)\n\t\tUint8Array.prototype.slice.call(src, position, position += length) :\n\t\tsrc.subarray(position, position += length)\n}\nfunction readExt(length) {\n\tlet type = src[position++]\n\tif (currentExtensions[type]) {\n\t\tlet end\n\t\treturn currentExtensions[type](src.subarray(position, end = (position += length)), (readPosition) => {\n\t\t\tposition = readPosition;\n\t\t\ttry {\n\t\t\t\treturn read();\n\t\t\t} finally {\n\t\t\t\tposition = end;\n\t\t\t}\n\t\t})\n\t}\n\telse\n\t\tthrow new Error('Unknown extension type ' + type)\n}\n\nvar keyCache = new Array(4096)\nfunction readKey() {\n\tlet length = src[position++]\n\tif (length >= 0xa0 && length < 0xc0) {\n\t\t// fixstr, potentially use key cache\n\t\tlength = length - 0xa0\n\t\tif (srcStringEnd >= position) // if it has been extracted, must use it (and faster anyway)\n\t\t\treturn srcString.slice(position - srcStringStart, (position += length) - srcStringStart)\n\t\telse if (!(srcStringEnd == 0 && srcEnd < 180))\n\t\t\treturn readFixedString(length)\n\t} else { // not cacheable, go back and do a standard read\n\t\tposition--\n\t\treturn asSafeString(read())\n\t}\n\tlet key = ((length << 5) ^ (length > 1 ? dataView.getUint16(position) : length > 0 ? src[position] : 0)) & 0xfff\n\tlet entry = keyCache[key]\n\tlet checkPosition = position\n\tlet end = position + length - 3\n\tlet chunk\n\tlet i = 0\n\tif (entry && entry.bytes == length) {\n\t\twhile (checkPosition < end) {\n\t\t\tchunk = dataView.getUint32(checkPosition)\n\t\t\tif (chunk != entry[i++]) {\n\t\t\t\tcheckPosition = 0x70000000\n\t\t\t\tbreak\n\t\t\t}\n\t\t\tcheckPosition += 4\n\t\t}\n\t\tend += 3\n\t\twhile (checkPosition < end) {\n\t\t\tchunk = src[checkPosition++]\n\t\t\tif (chunk != entry[i++]) {\n\t\t\t\tcheckPosition = 0x70000000\n\t\t\t\tbreak\n\t\t\t}\n\t\t}\n\t\tif (checkPosition === end) {\n\t\t\tposition = checkPosition\n\t\t\treturn entry.string\n\t\t}\n\t\tend -= 3\n\t\tcheckPosition = position\n\t}\n\tentry = []\n\tkeyCache[key] = entry\n\tentry.bytes = length\n\twhile (checkPosition < end) {\n\t\tchunk = dataView.getUint32(checkPosition)\n\t\tentry.push(chunk)\n\t\tcheckPosition += 4\n\t}\n\tend += 3\n\twhile (checkPosition < end) {\n\t\tchunk = src[checkPosition++]\n\t\tentry.push(chunk)\n\t}\n\t// for small blocks, avoiding the overhead of the extract call is helpful\n\tlet string = length < 16 ? shortStringInJS(length) : longStringInJS(length)\n\tif (string != null)\n\t\treturn entry.string = string\n\treturn entry.string = readFixedString(length)\n}\n\nfunction asSafeString(property) {\n\t// protect against expensive (DoS) string conversions\n\tif (typeof property === 'string') return property;\n\tif (typeof property === 'number' || typeof property === 'boolean' || typeof property === 'bigint') return property.toString();\n\tif (property == null) return property + '';\n\tif (currentUnpackr.allowArraysInMapKeys && Array.isArray(property) && property.flat().every(item => ['string', 'number', 'boolean', 'bigint'].includes(typeof item))) {\n\t\treturn property.flat().toString();\n\t}\n\tthrow new Error(`Invalid property type for record: ${typeof property}`);\n}\n// the registration of the record definition extension (as \"r\")\nconst recordDefinition = (id, highByte) => {\n\tlet structure = read().map(asSafeString) // ensure that all keys are strings and\n\t// that the array is mutable\n\tlet firstByte = id\n\tif (highByte !== undefined) {\n\t\tid = id < 32 ? -((highByte << 5) + id) : ((highByte << 5) + id)\n\t\tstructure.highByte = highByte\n\t}\n\tlet existingStructure = currentStructures[id]\n\t// If it is a shared structure, we need to restore any changes after reading.\n\t// Also in sequential mode, we may get incomplete reads and thus errors, and we need to restore\n\t// to the state prior to an incomplete read in order to properly resume.\n\tif (existingStructure && (existingStructure.isShared || sequentialMode)) {\n\t\t(currentStructures.restoreStructures || (currentStructures.restoreStructures = []))[id] = existingStructure\n\t}\n\tcurrentStructures[id] = structure\n\tstructure.read = createStructureReader(structure, firstByte)\n\treturn structure.read()\n}\ncurrentExtensions[0] = () => {} // notepack defines extension 0 to mean undefined, so use that as the default here\ncurrentExtensions[0].noBuffer = true\n\ncurrentExtensions[0x42] = data => {\n\tlet headLength = (data.byteLength % 8) || 8\n\tlet head = BigInt(data[0] & 0x80 ? data[0] - 0x100 : data[0])\n\tfor (let i = 1; i < headLength; i++) {\n\t\thead <<= BigInt(8)\n\t\thead += BigInt(data[i])\n\t}\n\tif (data.byteLength !== headLength) {\n\t\tlet view = new DataView(data.buffer, data.byteOffset, data.byteLength)\n\t\tlet decode = (start, end) => {\n\t\t\tlet length = end - start\n\t\t\tif (length <= 40) {\n\t\t\t\tlet out = view.getBigUint64(start)\n\t\t\t\tfor (let i = start + 8; i < end; i += 8) {\n\t\t\t\t\tout <<= BigInt(64n)\n\t\t\t\t\tout |= view.getBigUint64(i)\n\t\t\t\t}\n\t\t\t\treturn out\n\t\t\t}\n\t\t\t// if (length === 8) return view.getBigUint64(start)\n\t\t\tlet middle = start + (length >> 4 << 3)\n\t\t\tlet left = decode(start, middle)\n\t\t\tlet right = decode(middle, end)\n\t\t\treturn (left << BigInt((end - middle) * 8)) | right\n\t\t}\n\t\thead = (head << BigInt((view.byteLength - headLength) * 8)) | decode(headLength, view.byteLength)\n\t}\n\treturn head\n}\n\nlet errors = {\n\tError, EvalError, RangeError, ReferenceError, SyntaxError, TypeError, URIError, AggregateError: typeof AggregateError === 'function' ? AggregateError : null,\n}\ncurrentExtensions[0x65] = () => {\n\tlet data = read()\n\tif (!errors[data[0]]) {\n\t\tlet error = Error(data[1], { cause: data[2] })\n\t\terror.name = data[0]\n\t\treturn error\n\t}\n\treturn errors[data[0]](data[1], { cause: data[2] })\n}\n\ncurrentExtensions[0x69] = (data) => {\n\t// id extension (for structured clones)\n\tif (currentUnpackr.structuredClone === false) throw new Error('Structured clone extension is disabled')\n\tlet id = dataView.getUint32(position - 4)\n\tif (!referenceMap)\n\t\treferenceMap = new Map()\n\tlet token = src[position]\n\tlet target\n\t// TODO: handle any other types that can cycle and make the code more robust if there are other extensions\n\tif (token >= 0x90 && token < 0xa0 || token == 0xdc || token == 0xdd)\n\t\ttarget = []\n\telse if (token >= 0x80 && token < 0x90 || token == 0xde || token == 0xdf)\n\t\ttarget = new Map()\n\telse if ((token >= 0xc7 && token <= 0xc9 || token >= 0xd4 && token <= 0xd8) && src[position + 1] === 0x73)\n\t\ttarget = new Set()\n\telse\n\t\ttarget = {}\n\n\tlet refEntry = { target } // a placeholder object\n\treferenceMap.set(id, refEntry)\n\tlet targetProperties = read() // read the next value as the target object to id\n\tif (!refEntry.used) {\n\t\t// no cycle, can just use the returned read object\n\t\treturn refEntry.target = targetProperties // replace the placeholder with the real one\n\t} else {\n\t\t// there is a cycle, so we have to assign properties to original target\n\t\tObject.assign(target, targetProperties)\n\t}\n\n\t// copy over map/set entries if we're able to\n\tif (target instanceof Map)\n\t\tfor (let [k, v] of targetProperties.entries()) target.set(k, v)\n\tif (target instanceof Set)\n\t\tfor (let i of Array.from(targetProperties)) target.add(i)\n\treturn target\n}\n\ncurrentExtensions[0x70] = (data) => {\n\t// pointer extension (for structured clones)\n\tif (currentUnpackr.structuredClone === false) throw new Error('Structured clone extension is disabled')\n\tlet id = dataView.getUint32(position - 4)\n\tlet refEntry = referenceMap.get(id)\n\trefEntry.used = true\n\treturn refEntry.target\n}\n\ncurrentExtensions[0x73] = () => new Set(read())\n\nexport const typedArrays = ['Int8','Uint8','Uint8Clamped','Int16','Uint16','Int32','Uint32','Float32','Float64','BigInt64','BigUint64'].map(type => type + 'Array')\n\nlet glbl = typeof globalThis === 'object' ? globalThis : window;\ncurrentExtensions[0x74] = (data) => {\n\tlet typeCode = data[0]\n\t// we always have to slice to get a new ArrayBuffer that is aligned\n\tlet buffer = Uint8Array.prototype.slice.call(data, 1).buffer\n\n\tlet typedArrayName = typedArrays[typeCode]\n\tif (!typedArrayName) {\n\t\tif (typeCode === 16) return buffer\n\t\tif (typeCode === 17) return new DataView(buffer)\n\t\tthrow new Error('Could not find typed array for code ' + typeCode)\n\t}\n\treturn new glbl[typedArrayName](buffer)\n}\ncurrentExtensions[0x78] = () => {\n\tlet data = read()\n\treturn new RegExp(data[0], data[1])\n}\nconst TEMP_BUNDLE = []\ncurrentExtensions[0x62] = (data) => {\n\tlet dataSize = (data[0] << 24) + (data[1] << 16) + (data[2] << 8) + data[3]\n\tlet dataPosition = position\n\tposition += dataSize - data.length\n\tbundledStrings = TEMP_BUNDLE\n\tbundledStrings = [readOnlyJSString(), readOnlyJSString()]\n\tbundledStrings.position0 = 0\n\tbundledStrings.position1 = 0\n\tbundledStrings.postBundlePosition = position\n\tposition = dataPosition\n\treturn read()\n}\n\ncurrentExtensions[0xff] = (data) => {\n\t// 32-bit date extension\n\tif (data.length == 4)\n\t\treturn new Date((data[0] * 0x1000000 + (data[1] << 16) + (data[2] << 8) + data[3]) * 1000)\n\telse if (data.length == 8)\n\t\treturn new Date(\n\t\t\t((data[0] << 22) + (data[1] << 14) + (data[2] << 6) + (data[3] >> 2)) / 1000000 +\n\t\t\t((data[3] & 0x3) * 0x100000000 + data[4] * 0x1000000 + (data[5] << 16) + (data[6] << 8) + data[7]) * 1000)\n\telse if (data.length == 12)\n\t\treturn new Date(\n\t\t\t((data[0] << 24) + (data[1] << 16) + (data[2] << 8) + data[3]) / 1000000 +\n\t\t\t(((data[4] & 0x80) ? -0x1000000000000 : 0) + data[6] * 0x10000000000 + data[7] * 0x100000000 + data[8] * 0x1000000 + (data[9] << 16) + (data[10] << 8) + data[11]) * 1000)\n\telse\n\t\treturn new Date('invalid')\n}\n// registration of bulk record definition?\n// currentExtensions[0x52] = () =>\n\nfunction saveState(callback) {\n\tif (onSaveState)\n\t\tonSaveState();\n\tlet savedSrcEnd = srcEnd\n\tlet savedPosition = position\n\tlet savedStringPosition = stringPosition\n\tlet savedSrcStringStart = srcStringStart\n\tlet savedSrcStringEnd = srcStringEnd\n\tlet savedSrcString = srcString\n\tlet savedStrings = strings\n\tlet savedReferenceMap = referenceMap\n\tlet savedBundledStrings = bundledStrings\n\n\t// TODO: We may need to revisit this if we do more external calls to user code (since it could be slow)\n\tlet savedSrc = new Uint8Array(src.slice(0, srcEnd)) // we copy the data in case it changes while external data is processed\n\tlet savedStructures = currentStructures\n\tlet savedStructuresContents = currentStructures.slice(0, currentStructures.length)\n\tlet savedPackr = currentUnpackr\n\tlet savedSequentialMode = sequentialMode\n\tlet value = callback()\n\tsrcEnd = savedSrcEnd\n\tposition = savedPosition\n\tstringPosition = savedStringPosition\n\tsrcStringStart = savedSrcStringStart\n\tsrcStringEnd = savedSrcStringEnd\n\tsrcString = savedSrcString\n\tstrings = savedStrings\n\treferenceMap = savedReferenceMap\n\tbundledStrings = savedBundledStrings\n\tsrc = savedSrc\n\tsequentialMode = savedSequentialMode\n\tcurrentStructures = savedStructures\n\tcurrentStructures.splice(0, currentStructures.length, ...savedStructuresContents)\n\tcurrentUnpackr = savedPackr\n\tdataView = new DataView(src.buffer, src.byteOffset, src.byteLength)\n\treturn value\n}\nexport function clearSource() {\n\tsrc = null\n\treferenceMap = null\n\tcurrentStructures = null\n}\n\nexport function addExtension(extension) {\n\tif (extension.unpack)\n\t\tcurrentExtensions[extension.type] = extension.unpack\n\telse\n\t\tcurrentExtensions[extension.type] = extension\n}\n\nexport const mult10 = new Array(147) // this is a table matching binary exponents to the multiplier to determine significant digit rounding\nfor (let i = 0; i < 256; i++) {\n\tmult10[i] = +('1e' + Math.floor(45.15 - i * 0.30103))\n}\nexport const Decoder = Unpackr\nvar defaultUnpackr = new Unpackr({ useRecords: false })\nexport const unpack = defaultUnpackr.unpack\nexport const unpackMultiple = defaultUnpackr.unpackMultiple\nexport const decode = defaultUnpackr.unpack\nexport const FLOAT32_OPTIONS = {\n\tNEVER: 0,\n\tALWAYS: 1,\n\tDECIMAL_ROUND: 3,\n\tDECIMAL_FIT: 4\n}\nlet f32Array = new Float32Array(1)\nlet u8Array = new Uint8Array(f32Array.buffer, 0, 4)\nexport function roundFloat32(float32Number) {\n\tf32Array[0] = float32Number\n\tlet multiplier = mult10[((u8Array[3] & 0x7f) << 1) | (u8Array[2] >> 7)]\n\treturn ((multiplier * float32Number + (float32Number > 0 ? 0.5 : -0.5)) >> 0) / multiplier\n}\nexport function setReadStruct(updatedReadStruct, loadedStructs, saveState) {\n\treadStruct = updatedReadStruct;\n\tonLoadedStructures = loadedStructs;\n\tonSaveState = saveState;\n}\n","import { Unpackr, mult10, C1Type, typedArrays, addExtension as unpackAddExtension } from './unpack.js'\nlet textEncoder\ntry {\n\ttextEncoder = new TextEncoder()\n} catch (error) {}\nlet extensions, extensionClasses\nconst hasNodeBuffer = typeof Buffer !== 'undefined'\nconst ByteArrayAllocate = hasNodeBuffer ?\n\tfunction(length) { return Buffer.allocUnsafeSlow(length) } : Uint8Array\nconst ByteArray = hasNodeBuffer ? Buffer : Uint8Array\nconst MAX_BUFFER_SIZE = hasNodeBuffer ? 0x100000000 : 0x7fd00000\nlet target, keysTarget\nlet targetView\nlet position = 0\nlet safeEnd\nlet bundledStrings = null\nlet writeStructSlots\nconst MAX_BUNDLE_SIZE = 0x5500 // maximum characters such that the encoded bytes fits in 16 bits.\nconst hasNonLatin = /[\\u0080-\\uFFFF]/\nexport const RECORD_SYMBOL = Symbol('record-id')\nexport class Packr extends Unpackr {\n\tconstructor(options) {\n\t\tsuper(options)\n\t\tthis.offset = 0\n\t\tlet typeBuffer\n\t\tlet start\n\t\tlet hasSharedUpdate\n\t\tlet structures\n\t\tlet referenceMap\n\t\tlet encodeUtf8 = ByteArray.prototype.utf8Write ? function(string, position) {\n\t\t\treturn target.utf8Write(string, position, target.byteLength - position)\n\t\t} : (textEncoder && textEncoder.encodeInto) ?\n\t\t\tfunction(string, position) {\n\t\t\t\treturn textEncoder.encodeInto(string, target.subarray(position)).written\n\t\t\t} : false\n\n\t\tlet packr = this\n\t\tif (!options)\n\t\t\toptions = {}\n\t\tlet isSequential = options && options.sequential\n\t\tlet hasSharedStructures = options.structures || options.saveStructures\n\t\tlet maxSharedStructures = options.maxSharedStructures\n\t\tif (maxSharedStructures == null)\n\t\t\tmaxSharedStructures = hasSharedStructures ? 32 : 0\n\t\tif (maxSharedStructures > 8160)\n\t\t\tthrow new Error('Maximum maxSharedStructure is 8160')\n\t\tif (options.structuredClone && options.moreTypes == undefined) {\n\t\t\tthis.moreTypes = true\n\t\t}\n\t\tlet maxOwnStructures = options.maxOwnStructures\n\t\tif (maxOwnStructures == null)\n\t\t\tmaxOwnStructures = hasSharedStructures ? 32 : 64\n\t\tif (!this.structures && options.useRecords != false)\n\t\t\tthis.structures = []\n\t\t// two byte record ids for shared structures\n\t\tlet useTwoByteRecords = maxSharedStructures > 32 || (maxOwnStructures + maxSharedStructures > 64)\n\t\tlet sharedLimitId = maxSharedStructures + 0x40\n\t\tlet maxStructureId = maxSharedStructures + maxOwnStructures + 0x40\n\t\tif (maxStructureId > 8256) {\n\t\t\tthrow new Error('Maximum maxSharedStructure + maxOwnStructure is 8192')\n\t\t}\n\t\tlet recordIdsToRemove = []\n\t\tlet transitionsCount = 0\n\t\tlet serializationsSinceTransitionRebuild = 0\n\n\t\tthis.pack = this.encode = function(value, encodeOptions) {\n\t\t\tif (!target) {\n\t\t\t\ttarget = new ByteArrayAllocate(8192)\n\t\t\t\ttargetView = target.dataView || (target.dataView = new DataView(target.buffer, 0, 8192))\n\t\t\t\tposition = 0\n\t\t\t}\n\t\t\tsafeEnd = target.length - 10\n\t\t\tif (safeEnd - position < 0x800) {\n\t\t\t\t// don't start too close to the end,\n\t\t\t\ttarget = new ByteArrayAllocate(target.length)\n\t\t\t\ttargetView = target.dataView || (target.dataView = new DataView(target.buffer, 0, target.length))\n\t\t\t\tsafeEnd = target.length - 10\n\t\t\t\tposition = 0\n\t\t\t} else\n\t\t\t\tposition = (position + 7) & 0x7ffffff8 // Word align to make any future copying of this buffer faster\n\t\t\tstart = position\n\t\t\tif (encodeOptions & RESERVE_START_SPACE) position += (encodeOptions & 0xff)\n\t\t\treferenceMap = packr.structuredClone ? new Map() : null\n\t\t\tif (packr.bundleStrings && typeof value !== 'string') {\n\t\t\t\tbundledStrings = []\n\t\t\t\tbundledStrings.size = Infinity // force a new bundle start on first string\n\t\t\t} else\n\t\t\t\tbundledStrings = null\n\t\t\tstructures = packr.structures\n\t\t\tif (structures) {\n\t\t\t\tif (structures.uninitialized)\n\t\t\t\t\tstructures = packr._mergeStructures(packr.getStructures())\n\t\t\t\tlet sharedLength = structures.sharedLength || 0\n\t\t\t\tif (sharedLength > maxSharedStructures) {\n\t\t\t\t\t//if (maxSharedStructures <= 32 && structures.sharedLength > 32) // TODO: could support this, but would need to update the limit ids\n\t\t\t\t\tthrow new Error('Shared structures is larger than maximum shared structures, try increasing maxSharedStructures to ' + structures.sharedLength)\n\t\t\t\t}\n\t\t\t\tif (!structures.transitions) {\n\t\t\t\t\t// rebuild our structure transitions\n\t\t\t\t\tstructures.transitions = Object.create(null)\n\t\t\t\t\tfor (let i = 0; i < sharedLength; i++) {\n\t\t\t\t\t\tlet keys = structures[i]\n\t\t\t\t\t\tif (!keys)\n\t\t\t\t\t\t\tcontinue\n\t\t\t\t\t\tlet nextTransition, transition = structures.transitions\n\t\t\t\t\t\tfor (let j = 0, l = keys.length; j < l; j++) {\n\t\t\t\t\t\t\tlet key = keys[j]\n\t\t\t\t\t\t\tnextTransition = transition[key]\n\t\t\t\t\t\t\tif (!nextTransition) {\n\t\t\t\t\t\t\t\tnextTransition = transition[key] = Object.create(null)\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t\ttransition = nextTransition\n\t\t\t\t\t\t}\n\t\t\t\t\t\ttransition[RECORD_SYMBOL] = i + 0x40\n\t\t\t\t\t}\n\t\t\t\t\tthis.lastNamedStructuresLength = sharedLength\n\t\t\t\t}\n\t\t\t\tif (!isSequential) {\n\t\t\t\t\tstructures.nextId = sharedLength + 0x40\n\t\t\t\t}\n\t\t\t}\n\t\t\tif (hasSharedUpdate)\n\t\t\t\thasSharedUpdate = false\n\t\t\tlet encodingError;\n\t\t\ttry {\n\t\t\t\tif (packr.randomAccessStructure && value && value.constructor && value.constructor === Object)\n\t\t\t\t\twriteStruct(value);\n\t\t\t\telse\n\t\t\t\t\tpack(value)\n\t\t\t\tlet lastBundle = bundledStrings;\n\t\t\t\tif (bundledStrings)\n\t\t\t\t\twriteBundles(start, pack, 0)\n\t\t\t\tif (referenceMap && referenceMap.idsToInsert) {\n\t\t\t\t\tlet idsToInsert = referenceMap.idsToInsert.sort((a, b) => a.offset > b.offset ? 1 : -1);\n\t\t\t\t\tlet i = idsToInsert.length;\n\t\t\t\t\tlet incrementPosition = -1;\n\t\t\t\t\twhile (lastBundle && i > 0) {\n\t\t\t\t\t\tlet insertionPoint = idsToInsert[--i].offset + start;\n\t\t\t\t\t\tif (insertionPoint < (lastBundle.stringsPosition + start) && incrementPosition === -1)\n\t\t\t\t\t\t\tincrementPosition = 0;\n\t\t\t\t\t\tif (insertionPoint > (lastBundle.position + start)) {\n\t\t\t\t\t\t\tif (incrementPosition >= 0)\n\t\t\t\t\t\t\t\tincrementPosition += 6;\n\t\t\t\t\t\t} else {\n\t\t\t\t\t\t\tif (incrementPosition >= 0) {\n\t\t\t\t\t\t\t\t// update the bundle reference now\n\t\t\t\t\t\t\t\ttargetView.setUint32(lastBundle.position + start,\n\t\t\t\t\t\t\t\t\ttargetView.getUint32(lastBundle.position + start) + incrementPosition)\n\t\t\t\t\t\t\t\tincrementPosition = -1; // reset\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t\tlastBundle = lastBundle.previous;\n\t\t\t\t\t\t\ti++;\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\t\t\t\t\tif (incrementPosition >= 0 && lastBundle) {\n\t\t\t\t\t\t// update the bundle reference now\n\t\t\t\t\t\ttargetView.setUint32(lastBundle.position + start,\n\t\t\t\t\t\t\ttargetView.getUint32(lastBundle.position + start) + incrementPosition)\n\t\t\t\t\t}\n\t\t\t\t\tposition += idsToInsert.length * 6;\n\t\t\t\t\tif (position > safeEnd)\n\t\t\t\t\t\tmakeRoom(position)\n\t\t\t\t\tpackr.offset = position\n\t\t\t\t\tlet serialized = insertIds(target.subarray(start, position), idsToInsert)\n\t\t\t\t\treferenceMap = null\n\t\t\t\t\treturn serialized\n\t\t\t\t}\n\t\t\t\tpackr.offset = position // update the offset so next serialization doesn't write over our buffer, but can continue writing to same buffer sequentially\n\t\t\t\tif (encodeOptions & REUSE_BUFFER_MODE) {\n\t\t\t\t\ttarget.start = start\n\t\t\t\t\ttarget.end = position\n\t\t\t\t\treturn target\n\t\t\t\t}\n\t\t\t\treturn target.subarray(start, position) // position can change if we call pack again in saveStructures, so we get the buffer now\n\t\t\t} catch(error) {\n\t\t\t\tencodingError = error;\n\t\t\t\tthrow error;\n\t\t\t} finally {\n\t\t\t\tif (structures) {\n\t\t\t\t\tresetStructures();\n\t\t\t\t\tif (hasSharedUpdate && packr.saveStructures) {\n\t\t\t\t\t\tlet sharedLength = structures.sharedLength || 0\n\t\t\t\t\t\t// we can't rely on start/end with REUSE_BUFFER_MODE since they will (probably) change when we save\n\t\t\t\t\t\tlet returnBuffer = target.subarray(start, position)\n\t\t\t\t\t\tlet newSharedData = prepareStructures(structures, packr);\n\t\t\t\t\t\tif (!encodingError) { // TODO: If there is an encoding error, should make the structures as uninitialized so they get rebuilt next time\n\t\t\t\t\t\t\tif (packr.saveStructures(newSharedData, newSharedData.isCompatible) === false) {\n\t\t\t\t\t\t\t\t// get updated structures and try again if the update failed\n\t\t\t\t\t\t\t\treturn packr.pack(value, encodeOptions)\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t\tpackr.lastNamedStructuresLength = sharedLength\n\t\t\t\t\t\t\t// don't keep large buffers around\n\t\