@llamaindex/env
Version:
environment wrapper, supports all JS environment including node, deno, bun, edge runtime, and cloudflare worker
1,286 lines (1,279 loc) • 479 kB
JavaScript
import { Sha256 } from '@aws-crypto/sha256-js';
export { default as path } from 'pathe';
class NotSupportCurrentRuntimeClass {
constructor(runtime){
throw new Error(`Current environment ${runtime} is not supported`);
}
static bind(runtime) {
return class extends NotSupportCurrentRuntimeClass {
constructor(...args){
super(runtime);
}
};
}
}
// This is a workaround for the lack of globalThis in some environments
// It's being used across multiple places inside the `env` package
// eslint-disable-next-line @typescript-eslint/no-explicit-any
const glo = typeof globalThis !== "undefined" ? globalThis : typeof window !== "undefined" ? window : typeof global !== "undefined" ? global : {};
const importIdentifier = "__ $@llamaindex/env$ __";
if (glo[importIdentifier] === true) {
/**
* Dear reader of this message. Please take this seriously.
*
* If you see this message, make sure that you only import one version of llamaindex. In many cases,
* your package manager installs two versions of llamaindex that are used by different packages within your project.
* Another reason for this message is that some parts of your project use the CJS version of llamaindex
* and others use the ESM version of llamaindex.
*
* This often leads to issues that are hard to debug. We often need to perform constructor checks,
* e.g. `node instanceof TextNode`. If you imported different versions of llamaindex, it is impossible for us to
* do the constructor checks anymore - which might break the functionality of your application.
*/ console.error("llamaindex was already imported. This breaks constructor checks and will lead to issues!");
}
glo[importIdentifier] = true;
// Web doesn't have AsyncLocalStorage and there's no alternative way to implement it
// Wait for https://github.com/tc39/proposal-async-context
class AsyncLocalStorage {
#store;
// eslint-disable-next-line @typescript-eslint/no-explicit-any
static bind(fn) {
return fn;
}
// eslint-disable-next-line @typescript-eslint/no-explicit-any
static snapshot() {
// eslint-disable-next-line @typescript-eslint/no-explicit-any
return (cb, ...args)=>cb(...args);
}
getStore() {
return this.#store;
}
run(store, cb) {
this.#store = store;
if (cb.constructor.name === "AsyncFunction") {
console.warn("AsyncLocalStorage is not supported in the web environment");
console.warn("Please note that some features may not work as expected");
}
return cb();
}
constructor(){
this.#store = null;
}
}
function noop$1() {}
const emptyLogger = Object.freeze({
log: noop$1,
error: noop$1,
warn: noop$1
});
const consoleLogger = Object.freeze({
log: console.log.bind(console),
error: console.error.bind(console),
warn: console.warn.bind(console)
});
/**
* Converts a Uint8Array to a base64 string.
* For large arrays, it processes the data in chunks to avoid memory issues.
* Falls back to Buffer if available for better performance.
*
* @param bytes - The Uint8Array to convert
* @returns The base64 string representation
*/ function uint8ArrayToBase64(bytes) {
// Use Buffer if available (Node.js environment)
if (typeof Buffer !== "undefined") {
return Buffer.from(bytes).toString("base64");
}
// For browsers and other environments without Buffer
// Process in chunks for large arrays to avoid memory issues
const CHUNK_SIZE = 32768; // 32KB chunks
let result = "";
// For small arrays, use the built-in btoa function directly
if (bytes.length < CHUNK_SIZE) {
const binary = Array.from(bytes).map((byte)=>String.fromCharCode(byte)).join("");
return globalThis.btoa(binary);
}
// For large arrays, process in chunks
for(let i = 0; i < bytes.length; i += CHUNK_SIZE){
const chunk = bytes.subarray(i, i + CHUNK_SIZE);
const binary = Array.from(chunk).map((byte)=>String.fromCharCode(byte)).join("");
result += globalThis.btoa(binary);
}
return result;
}
function commonjsRequire(path) {
throw new Error('Could not dynamically require "' + path + '". Please configure the dynamicRequireTargets or/and ignoreDynamicRequires option of @rollup/plugin-commonjs appropriately for this require call to work.');
}
var process = {};
var cachedSetTimeout;
var cachedClearTimeout;
function defaultSetTimout() {
throw new Error("setTimeout has not been defined");
}
function defaultClearTimeout() {
throw new Error("clearTimeout has not been defined");
}
(function() {
try {
if (typeof setTimeout === "function") {
cachedSetTimeout = setTimeout;
} else {
cachedSetTimeout = defaultSetTimout;
}
} catch (e) {
cachedSetTimeout = defaultSetTimout;
}
try {
if (typeof clearTimeout === "function") {
cachedClearTimeout = clearTimeout;
} else {
cachedClearTimeout = defaultClearTimeout;
}
} catch (e) {
cachedClearTimeout = defaultClearTimeout;
}
})();
function runTimeout(fun) {
if (cachedSetTimeout === setTimeout) {
return setTimeout(fun, 0);
}
if ((cachedSetTimeout === defaultSetTimout || !cachedSetTimeout) && setTimeout) {
cachedSetTimeout = setTimeout;
return setTimeout(fun, 0);
}
try {
return cachedSetTimeout(fun, 0);
} catch (e) {
try {
return cachedSetTimeout.call(null, fun, 0);
} catch (e2) {
return cachedSetTimeout.call(this, fun, 0);
}
}
}
function runClearTimeout(marker) {
if (cachedClearTimeout === clearTimeout) {
return clearTimeout(marker);
}
if ((cachedClearTimeout === defaultClearTimeout || !cachedClearTimeout) && clearTimeout) {
cachedClearTimeout = clearTimeout;
return clearTimeout(marker);
}
try {
return cachedClearTimeout(marker);
} catch (e) {
try {
return cachedClearTimeout.call(null, marker);
} catch (e2) {
return cachedClearTimeout.call(this, marker);
}
}
}
var queue = [];
var draining = false;
var currentQueue;
var queueIndex = -1;
function cleanUpNextTick() {
if (!draining || !currentQueue) {
return;
}
draining = false;
if (currentQueue.length) {
queue = currentQueue.concat(queue);
} else {
queueIndex = -1;
}
if (queue.length) {
drainQueue();
}
}
function drainQueue() {
if (draining) {
return;
}
var timeout = runTimeout(cleanUpNextTick);
draining = true;
var len = queue.length;
while(len){
currentQueue = queue;
queue = [];
while(++queueIndex < len){
if (currentQueue) {
currentQueue[queueIndex].run();
}
}
queueIndex = -1;
len = queue.length;
}
currentQueue = null;
draining = false;
runClearTimeout(timeout);
}
process.nextTick = function(fun) {
var args = new Array(arguments.length - 1);
if (arguments.length > 1) {
for(var i = 1; i < arguments.length; i++){
args[i - 1] = arguments[i];
}
}
queue.push(new Item(fun, args));
if (queue.length === 1 && !draining) {
runTimeout(drainQueue);
}
};
function Item(fun, array) {
this.fun = fun;
this.array = array;
}
Item.prototype.run = function() {
this.fun.apply(null, this.array);
};
process.title = "browser";
process.browser = true;
process.env = {};
process.argv = [];
process.version = "";
process.versions = {};
function noop() {}
process.on = noop;
process.addListener = noop;
process.once = noop;
process.off = noop;
process.removeListener = noop;
process.removeAllListeners = noop;
process.emit = noop;
process.prependListener = noop;
process.prependOnceListener = noop;
process.listeners = function(name) {
return [];
};
process.binding = function(name) {
throw new Error("process.binding is not supported");
};
process.cwd = function() {
return "/";
};
process.chdir = function(dir) {
throw new Error("process.chdir is not supported");
};
process.umask = function() {
return 0;
};
var __create = Object.create;
var __defProp = Object.defineProperty;
var __getOwnPropDesc = Object.getOwnPropertyDescriptor;
var __getOwnPropNames = Object.getOwnPropertyNames;
var __getProtoOf = Object.getPrototypeOf;
var __hasOwnProp = Object.prototype.hasOwnProperty;
var __require = /* @__PURE__ */ ((x)=>typeof commonjsRequire !== "undefined" ? commonjsRequire : typeof Proxy !== "undefined" ? new Proxy(x, {
get: (a, b)=>(typeof commonjsRequire !== "undefined" ? commonjsRequire : a)[b]
}) : x)(function(x) {
if (typeof commonjsRequire !== "undefined") return commonjsRequire.apply(this, arguments);
throw Error('Dynamic require of "' + x + '" is not supported');
});
var __commonJS = (cb, mod)=>function __require2() {
return mod || (0, cb[__getOwnPropNames(cb)[0]])((mod = {
exports: {}
}).exports, mod), mod.exports;
};
var __copyProps = (to, from, except, desc)=>{
if (from && typeof from === "object" || typeof from === "function") {
for (const key of __getOwnPropNames(from))if (!__hasOwnProp.call(to, key) && key !== except) __defProp(to, key, {
get: ()=>from[key],
enumerable: !(desc = __getOwnPropDesc(from, key)) || desc.enumerable
});
}
return to;
};
var __toESM = (mod, isNodeMode, target)=>(target = mod != null ? __create(__getProtoOf(mod)) : {}, __copyProps(// If the importer is in node compatibility mode or this is not an ESM
// file that has been converted to a CommonJS file using a Babel-
// compatible transform (i.e. "__esModule" has not been set), then set
// "default" to the CommonJS "module.exports" for node compatibility.
__defProp(target, "default", {
value: mod,
enumerable: true
}) , mod));
// node_modules/memfs/lib/constants.js
var require_constants = __commonJS({
"node_modules/memfs/lib/constants.js" (exports) {
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.constants = void 0;
exports.constants = {
O_RDONLY: 0,
O_WRONLY: 1,
O_RDWR: 2,
S_IFMT: 61440,
S_IFREG: 32768,
S_IFDIR: 16384,
S_IFCHR: 8192,
S_IFBLK: 24576,
S_IFIFO: 4096,
S_IFLNK: 40960,
S_IFSOCK: 49152,
O_CREAT: 64,
O_EXCL: 128,
O_NOCTTY: 256,
O_TRUNC: 512,
O_APPEND: 1024,
O_DIRECTORY: 65536,
O_NOATIME: 262144,
O_NOFOLLOW: 131072,
O_SYNC: 1052672,
O_SYMLINK: 2097152,
O_DIRECT: 16384,
O_NONBLOCK: 2048,
S_IRWXU: 448,
S_IRUSR: 256,
S_IWUSR: 128,
S_IXUSR: 64,
S_IRWXG: 56,
S_IRGRP: 32,
S_IWGRP: 16,
S_IXGRP: 8,
S_IRWXO: 7,
S_IROTH: 4,
S_IWOTH: 2,
S_IXOTH: 1,
F_OK: 0,
R_OK: 4,
W_OK: 2,
X_OK: 1,
UV_FS_SYMLINK_DIR: 1,
UV_FS_SYMLINK_JUNCTION: 2,
UV_FS_COPYFILE_EXCL: 1,
UV_FS_COPYFILE_FICLONE: 2,
UV_FS_COPYFILE_FICLONE_FORCE: 4,
COPYFILE_EXCL: 1,
COPYFILE_FICLONE: 2,
COPYFILE_FICLONE_FORCE: 4
};
}
});
// node_modules/memfs/lib/Stats.js
var require_Stats = __commonJS({
"node_modules/memfs/lib/Stats.js" (exports) {
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.Stats = void 0;
var constants_1 = require_constants();
var { S_IFMT, S_IFDIR, S_IFREG, S_IFBLK, S_IFCHR, S_IFLNK, S_IFIFO, S_IFSOCK } = constants_1.constants;
var Stats = class _Stats {
static build(node, bigint = false) {
const stats = new _Stats();
const { uid, gid, atime, mtime, ctime } = node;
const getStatNumber = !bigint ? (number)=>number : (number)=>BigInt(number);
stats.uid = getStatNumber(uid);
stats.gid = getStatNumber(gid);
stats.rdev = getStatNumber(0);
stats.blksize = getStatNumber(4096);
stats.ino = getStatNumber(node.ino);
stats.size = getStatNumber(node.getSize());
stats.blocks = getStatNumber(1);
stats.atime = atime;
stats.mtime = mtime;
stats.ctime = ctime;
stats.birthtime = ctime;
stats.atimeMs = getStatNumber(atime.getTime());
stats.mtimeMs = getStatNumber(mtime.getTime());
const ctimeMs = getStatNumber(ctime.getTime());
stats.ctimeMs = ctimeMs;
stats.birthtimeMs = ctimeMs;
if (bigint) {
stats.atimeNs = BigInt(atime.getTime()) * BigInt(1e6);
stats.mtimeNs = BigInt(mtime.getTime()) * BigInt(1e6);
const ctimeNs = BigInt(ctime.getTime()) * BigInt(1e6);
stats.ctimeNs = ctimeNs;
stats.birthtimeNs = ctimeNs;
}
stats.dev = getStatNumber(0);
stats.mode = getStatNumber(node.mode);
stats.nlink = getStatNumber(node.nlink);
return stats;
}
_checkModeProperty(property) {
return (Number(this.mode) & S_IFMT) === property;
}
isDirectory() {
return this._checkModeProperty(S_IFDIR);
}
isFile() {
return this._checkModeProperty(S_IFREG);
}
isBlockDevice() {
return this._checkModeProperty(S_IFBLK);
}
isCharacterDevice() {
return this._checkModeProperty(S_IFCHR);
}
isSymbolicLink() {
return this._checkModeProperty(S_IFLNK);
}
isFIFO() {
return this._checkModeProperty(S_IFIFO);
}
isSocket() {
return this._checkModeProperty(S_IFSOCK);
}
};
exports.Stats = Stats;
exports.default = Stats;
}
});
// node_modules/base64-js/index.js
var require_base64_js = __commonJS({
"node_modules/base64-js/index.js" (exports) {
exports.byteLength = byteLength;
exports.toByteArray = toByteArray;
exports.fromByteArray = fromByteArray;
var lookup = [];
var revLookup = [];
var Arr = typeof Uint8Array !== "undefined" ? Uint8Array : Array;
var code = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
for(i = 0, len = code.length; i < len; ++i){
lookup[i] = code[i];
revLookup[code.charCodeAt(i)] = i;
}
var i;
var len;
revLookup["-".charCodeAt(0)] = 62;
revLookup["_".charCodeAt(0)] = 63;
function getLens(b64) {
var len2 = b64.length;
if (len2 % 4 > 0) {
throw new Error("Invalid string. Length must be a multiple of 4");
}
var validLen = b64.indexOf("=");
if (validLen === -1) validLen = len2;
var placeHoldersLen = validLen === len2 ? 0 : 4 - validLen % 4;
return [
validLen,
placeHoldersLen
];
}
function byteLength(b64) {
var lens = getLens(b64);
var validLen = lens[0];
var placeHoldersLen = lens[1];
return (validLen + placeHoldersLen) * 3 / 4 - placeHoldersLen;
}
function _byteLength(b64, validLen, placeHoldersLen) {
return (validLen + placeHoldersLen) * 3 / 4 - placeHoldersLen;
}
function toByteArray(b64) {
var tmp;
var lens = getLens(b64);
var validLen = lens[0];
var placeHoldersLen = lens[1];
var arr = new Arr(_byteLength(b64, validLen, placeHoldersLen));
var curByte = 0;
var len2 = placeHoldersLen > 0 ? validLen - 4 : validLen;
var i2;
for(i2 = 0; i2 < len2; i2 += 4){
tmp = revLookup[b64.charCodeAt(i2)] << 18 | revLookup[b64.charCodeAt(i2 + 1)] << 12 | revLookup[b64.charCodeAt(i2 + 2)] << 6 | revLookup[b64.charCodeAt(i2 + 3)];
arr[curByte++] = tmp >> 16 & 255;
arr[curByte++] = tmp >> 8 & 255;
arr[curByte++] = tmp & 255;
}
if (placeHoldersLen === 2) {
tmp = revLookup[b64.charCodeAt(i2)] << 2 | revLookup[b64.charCodeAt(i2 + 1)] >> 4;
arr[curByte++] = tmp & 255;
}
if (placeHoldersLen === 1) {
tmp = revLookup[b64.charCodeAt(i2)] << 10 | revLookup[b64.charCodeAt(i2 + 1)] << 4 | revLookup[b64.charCodeAt(i2 + 2)] >> 2;
arr[curByte++] = tmp >> 8 & 255;
arr[curByte++] = tmp & 255;
}
return arr;
}
function tripletToBase64(num) {
return lookup[num >> 18 & 63] + lookup[num >> 12 & 63] + lookup[num >> 6 & 63] + lookup[num & 63];
}
function encodeChunk(uint8, start, end) {
var tmp;
var output = [];
for(var i2 = start; i2 < end; i2 += 3){
tmp = (uint8[i2] << 16 & 16711680) + (uint8[i2 + 1] << 8 & 65280) + (uint8[i2 + 2] & 255);
output.push(tripletToBase64(tmp));
}
return output.join("");
}
function fromByteArray(uint8) {
var tmp;
var len2 = uint8.length;
var extraBytes = len2 % 3;
var parts = [];
var maxChunkLength = 16383;
for(var i2 = 0, len22 = len2 - extraBytes; i2 < len22; i2 += maxChunkLength){
parts.push(encodeChunk(uint8, i2, i2 + maxChunkLength > len22 ? len22 : i2 + maxChunkLength));
}
if (extraBytes === 1) {
tmp = uint8[len2 - 1];
parts.push(lookup[tmp >> 2] + lookup[tmp << 4 & 63] + "==");
} else if (extraBytes === 2) {
tmp = (uint8[len2 - 2] << 8) + uint8[len2 - 1];
parts.push(lookup[tmp >> 10] + lookup[tmp >> 4 & 63] + lookup[tmp << 2 & 63] + "=");
}
return parts.join("");
}
}
});
// node_modules/ieee754/index.js
var require_ieee754 = __commonJS({
"node_modules/ieee754/index.js" (exports) {
exports.read = function(buffer, offset, isLE, mLen, nBytes) {
var e, m;
var eLen = nBytes * 8 - mLen - 1;
var eMax = (1 << eLen) - 1;
var eBias = eMax >> 1;
var nBits = -7;
var i = isLE ? nBytes - 1 : 0;
var d = isLE ? -1 : 1;
var s = buffer[offset + i];
i += d;
e = s & (1 << -nBits) - 1;
s >>= -nBits;
nBits += eLen;
for(; nBits > 0; e = e * 256 + buffer[offset + i], i += d, nBits -= 8){}
m = e & (1 << -nBits) - 1;
e >>= -nBits;
nBits += mLen;
for(; nBits > 0; m = m * 256 + buffer[offset + i], i += d, nBits -= 8){}
if (e === 0) {
e = 1 - eBias;
} else if (e === eMax) {
return m ? NaN : (s ? -1 : 1) * Infinity;
} else {
m = m + Math.pow(2, mLen);
e = e - eBias;
}
return (s ? -1 : 1) * m * Math.pow(2, e - mLen);
};
exports.write = function(buffer, value, offset, isLE, mLen, nBytes) {
var e, m, c;
var eLen = nBytes * 8 - mLen - 1;
var eMax = (1 << eLen) - 1;
var eBias = eMax >> 1;
var rt = mLen === 23 ? Math.pow(2, -24) - Math.pow(2, -77) : 0;
var i = isLE ? 0 : nBytes - 1;
var d = isLE ? 1 : -1;
var s = value < 0 || value === 0 && 1 / value < 0 ? 1 : 0;
value = Math.abs(value);
if (isNaN(value) || value === Infinity) {
m = isNaN(value) ? 1 : 0;
e = eMax;
} else {
e = Math.floor(Math.log(value) / Math.LN2);
if (value * (c = Math.pow(2, -e)) < 1) {
e--;
c *= 2;
}
if (e + eBias >= 1) {
value += rt / c;
} else {
value += rt * Math.pow(2, 1 - eBias);
}
if (value * c >= 2) {
e++;
c /= 2;
}
if (e + eBias >= eMax) {
m = 0;
e = eMax;
} else if (e + eBias >= 1) {
m = (value * c - 1) * Math.pow(2, mLen);
e = e + eBias;
} else {
m = value * Math.pow(2, eBias - 1) * Math.pow(2, mLen);
e = 0;
}
}
for(; mLen >= 8; buffer[offset + i] = m & 255, i += d, m /= 256, mLen -= 8){}
e = e << mLen | m;
eLen += mLen;
for(; eLen > 0; buffer[offset + i] = e & 255, i += d, e /= 256, eLen -= 8){}
buffer[offset + i - d] |= s * 128;
};
}
});
// node_modules/buffer/index.js
var require_buffer = __commonJS({
"node_modules/buffer/index.js" (exports) {
var base64 = require_base64_js();
var ieee754 = require_ieee754();
var customInspectSymbol = typeof Symbol === "function" && typeof Symbol["for"] === "function" ? Symbol["for"]("nodejs.util.inspect.custom") : null;
exports.Buffer = Buffer2;
exports.SlowBuffer = SlowBuffer;
exports.INSPECT_MAX_BYTES = 50;
var K_MAX_LENGTH = 2147483647;
exports.kMaxLength = K_MAX_LENGTH;
Buffer2.TYPED_ARRAY_SUPPORT = typedArraySupport();
if (!Buffer2.TYPED_ARRAY_SUPPORT && typeof console !== "undefined" && typeof console.error === "function") {
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.");
}
function typedArraySupport() {
try {
const arr = new Uint8Array(1);
const proto = {
foo: function() {
return 42;
}
};
Object.setPrototypeOf(proto, Uint8Array.prototype);
Object.setPrototypeOf(arr, proto);
return arr.foo() === 42;
} catch (e) {
return false;
}
}
Object.defineProperty(Buffer2.prototype, "parent", {
enumerable: true,
get: function() {
if (!Buffer2.isBuffer(this)) return void 0;
return this.buffer;
}
});
Object.defineProperty(Buffer2.prototype, "offset", {
enumerable: true,
get: function() {
if (!Buffer2.isBuffer(this)) return void 0;
return this.byteOffset;
}
});
function createBuffer(length) {
if (length > K_MAX_LENGTH) {
throw new RangeError('The value "' + length + '" is invalid for option "size"');
}
const buf = new Uint8Array(length);
Object.setPrototypeOf(buf, Buffer2.prototype);
return buf;
}
function Buffer2(arg, encodingOrOffset, length) {
if (typeof arg === "number") {
if (typeof encodingOrOffset === "string") {
throw new TypeError('The "string" argument must be of type string. Received type number');
}
return allocUnsafe(arg);
}
return from(arg, encodingOrOffset, length);
}
Buffer2.poolSize = 8192;
function from(value, encodingOrOffset, length) {
if (typeof value === "string") {
return fromString(value, encodingOrOffset);
}
if (ArrayBuffer.isView(value)) {
return fromArrayView(value);
}
if (value == null) {
throw new TypeError("The first argument must be one of type string, Buffer, ArrayBuffer, Array, or Array-like Object. Received type " + typeof value);
}
if (isInstance(value, ArrayBuffer) || value && isInstance(value.buffer, ArrayBuffer)) {
return fromArrayBuffer(value, encodingOrOffset, length);
}
if (typeof SharedArrayBuffer !== "undefined" && (isInstance(value, SharedArrayBuffer) || value && isInstance(value.buffer, SharedArrayBuffer))) {
return fromArrayBuffer(value, encodingOrOffset, length);
}
if (typeof value === "number") {
throw new TypeError('The "value" argument must not be of type number. Received type number');
}
const valueOf = value.valueOf && value.valueOf();
if (valueOf != null && valueOf !== value) {
return Buffer2.from(valueOf, encodingOrOffset, length);
}
const b = fromObject(value);
if (b) return b;
if (typeof Symbol !== "undefined" && Symbol.toPrimitive != null && typeof value[Symbol.toPrimitive] === "function") {
return Buffer2.from(value[Symbol.toPrimitive]("string"), encodingOrOffset, length);
}
throw new TypeError("The first argument must be one of type string, Buffer, ArrayBuffer, Array, or Array-like Object. Received type " + typeof value);
}
Buffer2.from = function(value, encodingOrOffset, length) {
return from(value, encodingOrOffset, length);
};
Object.setPrototypeOf(Buffer2.prototype, Uint8Array.prototype);
Object.setPrototypeOf(Buffer2, Uint8Array);
function assertSize(size) {
if (typeof size !== "number") {
throw new TypeError('"size" argument must be of type number');
} else if (size < 0) {
throw new RangeError('The value "' + size + '" is invalid for option "size"');
}
}
function alloc(size, fill, encoding) {
assertSize(size);
if (size <= 0) {
return createBuffer(size);
}
if (fill !== void 0) {
return typeof encoding === "string" ? createBuffer(size).fill(fill, encoding) : createBuffer(size).fill(fill);
}
return createBuffer(size);
}
Buffer2.alloc = function(size, fill, encoding) {
return alloc(size, fill, encoding);
};
function allocUnsafe(size) {
assertSize(size);
return createBuffer(size < 0 ? 0 : checked(size) | 0);
}
Buffer2.allocUnsafe = function(size) {
return allocUnsafe(size);
};
Buffer2.allocUnsafeSlow = function(size) {
return allocUnsafe(size);
};
function fromString(string, encoding) {
if (typeof encoding !== "string" || encoding === "") {
encoding = "utf8";
}
if (!Buffer2.isEncoding(encoding)) {
throw new TypeError("Unknown encoding: " + encoding);
}
const length = byteLength(string, encoding) | 0;
let buf = createBuffer(length);
const actual = buf.write(string, encoding);
if (actual !== length) {
buf = buf.slice(0, actual);
}
return buf;
}
function fromArrayLike(array) {
const length = array.length < 0 ? 0 : checked(array.length) | 0;
const buf = createBuffer(length);
for(let i = 0; i < length; i += 1){
buf[i] = array[i] & 255;
}
return buf;
}
function fromArrayView(arrayView) {
if (isInstance(arrayView, Uint8Array)) {
const copy = new Uint8Array(arrayView);
return fromArrayBuffer(copy.buffer, copy.byteOffset, copy.byteLength);
}
return fromArrayLike(arrayView);
}
function fromArrayBuffer(array, byteOffset, length) {
if (byteOffset < 0 || array.byteLength < byteOffset) {
throw new RangeError('"offset" is outside of buffer bounds');
}
if (array.byteLength < byteOffset + (length || 0)) {
throw new RangeError('"length" is outside of buffer bounds');
}
let buf;
if (byteOffset === void 0 && length === void 0) {
buf = new Uint8Array(array);
} else if (length === void 0) {
buf = new Uint8Array(array, byteOffset);
} else {
buf = new Uint8Array(array, byteOffset, length);
}
Object.setPrototypeOf(buf, Buffer2.prototype);
return buf;
}
function fromObject(obj) {
if (Buffer2.isBuffer(obj)) {
const len = checked(obj.length) | 0;
const buf = createBuffer(len);
if (buf.length === 0) {
return buf;
}
obj.copy(buf, 0, 0, len);
return buf;
}
if (obj.length !== void 0) {
if (typeof obj.length !== "number" || numberIsNaN(obj.length)) {
return createBuffer(0);
}
return fromArrayLike(obj);
}
if (obj.type === "Buffer" && Array.isArray(obj.data)) {
return fromArrayLike(obj.data);
}
}
function checked(length) {
if (length >= K_MAX_LENGTH) {
throw new RangeError("Attempt to allocate Buffer larger than maximum size: 0x" + K_MAX_LENGTH.toString(16) + " bytes");
}
return length | 0;
}
function SlowBuffer(length) {
if (+length != length) {
length = 0;
}
return Buffer2.alloc(+length);
}
Buffer2.isBuffer = function isBuffer(b) {
return b != null && b._isBuffer === true && b !== Buffer2.prototype;
};
Buffer2.compare = function compare(a, b) {
if (isInstance(a, Uint8Array)) a = Buffer2.from(a, a.offset, a.byteLength);
if (isInstance(b, Uint8Array)) b = Buffer2.from(b, b.offset, b.byteLength);
if (!Buffer2.isBuffer(a) || !Buffer2.isBuffer(b)) {
throw new TypeError('The "buf1", "buf2" arguments must be one of type Buffer or Uint8Array');
}
if (a === b) return 0;
let x = a.length;
let y = b.length;
for(let i = 0, len = Math.min(x, y); i < len; ++i){
if (a[i] !== b[i]) {
x = a[i];
y = b[i];
break;
}
}
if (x < y) return -1;
if (y < x) return 1;
return 0;
};
Buffer2.isEncoding = function isEncoding(encoding) {
switch(String(encoding).toLowerCase()){
case "hex":
case "utf8":
case "utf-8":
case "ascii":
case "latin1":
case "binary":
case "base64":
case "ucs2":
case "ucs-2":
case "utf16le":
case "utf-16le":
return true;
default:
return false;
}
};
Buffer2.concat = function concat(list, length) {
if (!Array.isArray(list)) {
throw new TypeError('"list" argument must be an Array of Buffers');
}
if (list.length === 0) {
return Buffer2.alloc(0);
}
let i;
if (length === void 0) {
length = 0;
for(i = 0; i < list.length; ++i){
length += list[i].length;
}
}
const buffer = Buffer2.allocUnsafe(length);
let pos = 0;
for(i = 0; i < list.length; ++i){
let buf = list[i];
if (isInstance(buf, Uint8Array)) {
if (pos + buf.length > buffer.length) {
if (!Buffer2.isBuffer(buf)) buf = Buffer2.from(buf);
buf.copy(buffer, pos);
} else {
Uint8Array.prototype.set.call(buffer, buf, pos);
}
} else if (!Buffer2.isBuffer(buf)) {
throw new TypeError('"list" argument must be an Array of Buffers');
} else {
buf.copy(buffer, pos);
}
pos += buf.length;
}
return buffer;
};
function byteLength(string, encoding) {
if (Buffer2.isBuffer(string)) {
return string.length;
}
if (ArrayBuffer.isView(string) || isInstance(string, ArrayBuffer)) {
return string.byteLength;
}
if (typeof string !== "string") {
throw new TypeError('The "string" argument must be one of type string, Buffer, or ArrayBuffer. Received type ' + typeof string);
}
const len = string.length;
const mustMatch = arguments.length > 2 && arguments[2] === true;
if (!mustMatch && len === 0) return 0;
let loweredCase = false;
for(;;){
switch(encoding){
case "ascii":
case "latin1":
case "binary":
return len;
case "utf8":
case "utf-8":
return utf8ToBytes(string).length;
case "ucs2":
case "ucs-2":
case "utf16le":
case "utf-16le":
return len * 2;
case "hex":
return len >>> 1;
case "base64":
return base64ToBytes(string).length;
default:
if (loweredCase) {
return mustMatch ? -1 : utf8ToBytes(string).length;
}
encoding = ("" + encoding).toLowerCase();
loweredCase = true;
}
}
}
Buffer2.byteLength = byteLength;
function slowToString(encoding, start, end) {
let loweredCase = false;
if (start === void 0 || start < 0) {
start = 0;
}
if (start > this.length) {
return "";
}
if (end === void 0 || end > this.length) {
end = this.length;
}
if (end <= 0) {
return "";
}
end >>>= 0;
start >>>= 0;
if (end <= start) {
return "";
}
if (!encoding) encoding = "utf8";
while(true){
switch(encoding){
case "hex":
return hexSlice(this, start, end);
case "utf8":
case "utf-8":
return utf8Slice(this, start, end);
case "ascii":
return asciiSlice(this, start, end);
case "latin1":
case "binary":
return latin1Slice(this, start, end);
case "base64":
return base64Slice(this, start, end);
case "ucs2":
case "ucs-2":
case "utf16le":
case "utf-16le":
return utf16leSlice(this, start, end);
default:
if (loweredCase) throw new TypeError("Unknown encoding: " + encoding);
encoding = (encoding + "").toLowerCase();
loweredCase = true;
}
}
}
Buffer2.prototype._isBuffer = true;
function swap(b, n, m) {
const i = b[n];
b[n] = b[m];
b[m] = i;
}
Buffer2.prototype.swap16 = function swap16() {
const len = this.length;
if (len % 2 !== 0) {
throw new RangeError("Buffer size must be a multiple of 16-bits");
}
for(let i = 0; i < len; i += 2){
swap(this, i, i + 1);
}
return this;
};
Buffer2.prototype.swap32 = function swap32() {
const len = this.length;
if (len % 4 !== 0) {
throw new RangeError("Buffer size must be a multiple of 32-bits");
}
for(let i = 0; i < len; i += 4){
swap(this, i, i + 3);
swap(this, i + 1, i + 2);
}
return this;
};
Buffer2.prototype.swap64 = function swap64() {
const len = this.length;
if (len % 8 !== 0) {
throw new RangeError("Buffer size must be a multiple of 64-bits");
}
for(let i = 0; i < len; i += 8){
swap(this, i, i + 7);
swap(this, i + 1, i + 6);
swap(this, i + 2, i + 5);
swap(this, i + 3, i + 4);
}
return this;
};
Buffer2.prototype.toString = function toString() {
const length = this.length;
if (length === 0) return "";
if (arguments.length === 0) return utf8Slice(this, 0, length);
return slowToString.apply(this, arguments);
};
Buffer2.prototype.toLocaleString = Buffer2.prototype.toString;
Buffer2.prototype.equals = function equals(b) {
if (!Buffer2.isBuffer(b)) throw new TypeError("Argument must be a Buffer");
if (this === b) return true;
return Buffer2.compare(this, b) === 0;
};
Buffer2.prototype.inspect = function inspect() {
let str = "";
const max = exports.INSPECT_MAX_BYTES;
str = this.toString("hex", 0, max).replace(/(.{2})/g, "$1 ").trim();
if (this.length > max) str += " ... ";
return "<Buffer " + str + ">";
};
if (customInspectSymbol) {
Buffer2.prototype[customInspectSymbol] = Buffer2.prototype.inspect;
}
Buffer2.prototype.compare = function compare(target, start, end, thisStart, thisEnd) {
if (isInstance(target, Uint8Array)) {
target = Buffer2.from(target, target.offset, target.byteLength);
}
if (!Buffer2.isBuffer(target)) {
throw new TypeError('The "target" argument must be one of type Buffer or Uint8Array. Received type ' + typeof target);
}
if (start === void 0) {
start = 0;
}
if (end === void 0) {
end = target ? target.length : 0;
}
if (thisStart === void 0) {
thisStart = 0;
}
if (thisEnd === void 0) {
thisEnd = this.length;
}
if (start < 0 || end > target.length || thisStart < 0 || thisEnd > this.length) {
throw new RangeError("out of range index");
}
if (thisStart >= thisEnd && start >= end) {
return 0;
}
if (thisStart >= thisEnd) {
return -1;
}
if (start >= end) {
return 1;
}
start >>>= 0;
end >>>= 0;
thisStart >>>= 0;
thisEnd >>>= 0;
if (this === target) return 0;
let x = thisEnd - thisStart;
let y = end - start;
const len = Math.min(x, y);
const thisCopy = this.slice(thisStart, thisEnd);
const targetCopy = target.slice(start, end);
for(let i = 0; i < len; ++i){
if (thisCopy[i] !== targetCopy[i]) {
x = thisCopy[i];
y = targetCopy[i];
break;
}
}
if (x < y) return -1;
if (y < x) return 1;
return 0;
};
function bidirectionalIndexOf(buffer, val, byteOffset, encoding, dir) {
if (buffer.length === 0) return -1;
if (typeof byteOffset === "string") {
encoding = byteOffset;
byteOffset = 0;
} else if (byteOffset > 2147483647) {
byteOffset = 2147483647;
} else if (byteOffset < -2147483648) {
byteOffset = -2147483648;
}
byteOffset = +byteOffset;
if (numberIsNaN(byteOffset)) {
byteOffset = dir ? 0 : buffer.length - 1;
}
if (byteOffset < 0) byteOffset = buffer.length + byteOffset;
if (byteOffset >= buffer.length) {
if (dir) return -1;
else byteOffset = buffer.length - 1;
} else if (byteOffset < 0) {
if (dir) byteOffset = 0;
else return -1;
}
if (typeof val === "string") {
val = Buffer2.from(val, encoding);
}
if (Buffer2.isBuffer(val)) {
if (val.length === 0) {
return -1;
}
return arrayIndexOf(buffer, val, byteOffset, encoding, dir);
} else if (typeof val === "number") {
val = val & 255;
if (typeof Uint8Array.prototype.indexOf === "function") {
if (dir) {
return Uint8Array.prototype.indexOf.call(buffer, val, byteOffset);
} else {
return Uint8Array.prototype.lastIndexOf.call(buffer, val, byteOffset);
}
}
return arrayIndexOf(buffer, [
val
], byteOffset, encoding, dir);
}
throw new TypeError("val must be string, number or Buffer");
}
function arrayIndexOf(arr, val, byteOffset, encoding, dir) {
let indexSize = 1;
let arrLength = arr.length;
let valLength = val.length;
if (encoding !== void 0) {
encoding = String(encoding).toLowerCase();
if (encoding === "ucs2" || encoding === "ucs-2" || encoding === "utf16le" || encoding === "utf-16le") {
if (arr.length < 2 || val.length < 2) {
return -1;
}
indexSize = 2;
arrLength /= 2;
valLength /= 2;
byteOffset /= 2;
}
}
function read(buf, i2) {
if (indexSize === 1) {
return buf[i2];
} else {
return buf.readUInt16BE(i2 * indexSize);
}
}
let i;
if (dir) {
let foundIndex = -1;
for(i = byteOffset; i < arrLength; i++){
if (read(arr, i) === read(val, foundIndex === -1 ? 0 : i - foundIndex)) {
if (foundIndex === -1) foundIndex = i;
if (i - foundIndex + 1 === valLength) return foundIndex * indexSize;
} else {
if (foundIndex !== -1) i -= i - foundIndex;
foundIndex = -1;
}
}
} else {
if (byteOffset + valLength > arrLength) byteOffset = arrLength - valLength;
for(i = byteOffset; i >= 0; i--){
let found = true;
for(let j = 0; j < valLength; j++){
if (read(arr, i + j) !== read(val, j)) {
found = false;
break;
}
}
if (found) return i;
}
}
return -1;
}
Buffer2.prototype.includes = function includes(val, byteOffset, encoding) {
return this.indexOf(val, byteOffset, encoding) !== -1;
};
Buffer2.prototype.indexOf = function indexOf(val, byteOffset, encoding) {
return bidirectionalIndexOf(this, val, byteOffset, encoding, true);
};
Buffer2.prototype.lastIndexOf = function lastIndexOf(val, byteOffset, encoding) {
return bidirectionalIndexOf(this, val, byteOffset, encoding, false);
};
function hexWrite(buf, string, offset, length) {
offset = Number(offset) || 0;
const remaining = buf.length - offset;
if (!length) {
length = remaining;
} else {
length = Number(length);
if (length > remaining) {
length = remaining;
}
}
const strLen = string.length;
if (length > strLen / 2) {
length = strLen / 2;
}
let i;
for(i = 0; i < length; ++i){
const parsed = parseInt(string.substr(i * 2, 2), 16);
if (numberIsNaN(parsed)) return i;
buf[offset + i] = parsed;
}
return i;
}
function utf8Write(buf, string, offset, length) {
return blitBuffer(utf8ToBytes(string, buf.length - offset), buf, offset, length);
}
function asciiWrite(buf, string, offset, length) {
return blitBuffer(asciiToBytes(string), buf, offset, length);
}
function base64Write(buf, string, offset, length) {
return blitBuffer(base64ToBytes(string), buf, offset, length);
}
function ucs2Write(buf, string, offset, length) {
return blitBuffer(utf16leToBytes(string, buf.length - offset), buf, offset, length);
}
Buffer2.prototype.write = function write(string, offset, length, encoding) {
if (offset === void 0) {
encoding = "utf8";
length = this.length;
offset = 0;
} else if (length === void 0 && typeof offset === "string") {
encoding = offset;
length = this.length;
offset = 0;
} else if (isFinite(offset)) {
offset = offset >>> 0;
if (isFinite(length)) {
length = length >>> 0;
if (encoding === void 0) encoding = "utf8";
} else {
encoding = length;
length = void 0;
}
} else {
throw new Error("Buffer.write(string, encoding, offset[, length]) is no longer supported");
}
const remaining = this.length - offset;
if (length === void 0 || length > remaining) length = remaining;
if (string.length > 0 && (length < 0 || offset < 0) || offset > this.length) {
throw new RangeError("Attempt to write outside buffer bounds");
}
if (!encoding) encoding = "utf8";
let loweredCase = false;
for(;;){
switch(encoding){
case "hex":
return hexWrite(this, string, offset, length);
case "utf8":
case "utf-8":
return utf8Write(this, string, offset, length);
case "ascii":
case "latin1":
case "binary":
return asciiWrite(this, string, offset, length);
case "base64":
return base64Write(this, string, offset, length);
case "ucs2":
case "ucs-2":
case "utf16le":
case "utf-16le":
return ucs2Write(this, string, offset, length);
default:
if (loweredCase) throw new TypeError("Unknown encoding: " + encoding);
encoding = ("" + encoding).toLowerCase();
loweredCase = true;
}
}
};
Buffer2.prototype.toJSON = function toJSON() {
return {
type: "Buffer",
data: Array.prototype.slice.call(this._arr || this