290 lines
11 KiB
JavaScript
290 lines
11 KiB
JavaScript
'use strict';
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/* globals
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AggregateError,
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Atomics,
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FinalizationRegistry,
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SharedArrayBuffer,
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WeakRef,
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*/
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var undefined;
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var $SyntaxError = SyntaxError;
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var $Function = Function;
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var $TypeError = TypeError;
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// eslint-disable-next-line consistent-return
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var getEvalledConstructor = function (expressionSyntax) {
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try {
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// eslint-disable-next-line no-new-func
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return Function('"use strict"; return (' + expressionSyntax + ').constructor;')();
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} catch (e) {}
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};
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var $gOPD = Object.getOwnPropertyDescriptor;
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if ($gOPD) {
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try {
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$gOPD({}, '');
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} catch (e) {
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$gOPD = null; // this is IE 8, which has a broken gOPD
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}
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}
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var throwTypeError = function () { throw new $TypeError(); };
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var ThrowTypeError = $gOPD
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? (function () {
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try {
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// eslint-disable-next-line no-unused-expressions, no-caller, no-restricted-properties
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arguments.callee; // IE 8 does not throw here
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return throwTypeError;
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} catch (calleeThrows) {
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try {
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// IE 8 throws on Object.getOwnPropertyDescriptor(arguments, '')
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return $gOPD(arguments, 'callee').get;
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} catch (gOPDthrows) {
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return throwTypeError;
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}
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}
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}())
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: throwTypeError;
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var hasSymbols = require('has-symbols')();
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var getProto = Object.getPrototypeOf || function (x) { return x.__proto__; }; // eslint-disable-line no-proto
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var asyncGenFunction = getEvalledConstructor('async function* () {}');
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var asyncGenFunctionPrototype = asyncGenFunction ? asyncGenFunction.prototype : undefined;
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var asyncGenPrototype = asyncGenFunctionPrototype ? asyncGenFunctionPrototype.prototype : undefined;
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var TypedArray = typeof Uint8Array === 'undefined' ? undefined : getProto(Uint8Array);
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var INTRINSICS = {
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'%AggregateError%': typeof AggregateError === 'undefined' ? undefined : AggregateError,
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'%Array%': Array,
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'%ArrayBuffer%': typeof ArrayBuffer === 'undefined' ? undefined : ArrayBuffer,
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'%ArrayIteratorPrototype%': hasSymbols ? getProto([][Symbol.iterator]()) : undefined,
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'%AsyncFromSyncIteratorPrototype%': undefined,
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'%AsyncFunction%': getEvalledConstructor('async function () {}'),
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'%AsyncGenerator%': asyncGenFunctionPrototype,
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'%AsyncGeneratorFunction%': asyncGenFunction,
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'%AsyncIteratorPrototype%': asyncGenPrototype ? getProto(asyncGenPrototype) : undefined,
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'%Atomics%': typeof Atomics === 'undefined' ? undefined : Atomics,
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'%BigInt%': typeof BigInt === 'undefined' ? undefined : BigInt,
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'%Boolean%': Boolean,
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'%DataView%': typeof DataView === 'undefined' ? undefined : DataView,
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'%Date%': Date,
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'%decodeURI%': decodeURI,
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'%decodeURIComponent%': decodeURIComponent,
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'%encodeURI%': encodeURI,
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'%encodeURIComponent%': encodeURIComponent,
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'%Error%': Error,
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'%eval%': eval, // eslint-disable-line no-eval
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'%EvalError%': EvalError,
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'%Float32Array%': typeof Float32Array === 'undefined' ? undefined : Float32Array,
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'%Float64Array%': typeof Float64Array === 'undefined' ? undefined : Float64Array,
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'%FinalizationRegistry%': typeof FinalizationRegistry === 'undefined' ? undefined : FinalizationRegistry,
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'%Function%': $Function,
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'%GeneratorFunction%': getEvalledConstructor('function* () {}'),
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'%Int8Array%': typeof Int8Array === 'undefined' ? undefined : Int8Array,
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'%Int16Array%': typeof Int16Array === 'undefined' ? undefined : Int16Array,
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'%Int32Array%': typeof Int32Array === 'undefined' ? undefined : Int32Array,
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'%isFinite%': isFinite,
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'%isNaN%': isNaN,
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'%IteratorPrototype%': hasSymbols ? getProto(getProto([][Symbol.iterator]())) : undefined,
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'%JSON%': typeof JSON === 'object' ? JSON : undefined,
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'%Map%': typeof Map === 'undefined' ? undefined : Map,
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'%MapIteratorPrototype%': typeof Map === 'undefined' || !hasSymbols ? undefined : getProto(new Map()[Symbol.iterator]()),
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'%Math%': Math,
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'%Number%': Number,
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'%Object%': Object,
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'%parseFloat%': parseFloat,
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'%parseInt%': parseInt,
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'%Promise%': typeof Promise === 'undefined' ? undefined : Promise,
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'%Proxy%': typeof Proxy === 'undefined' ? undefined : Proxy,
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'%RangeError%': RangeError,
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'%ReferenceError%': ReferenceError,
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'%Reflect%': typeof Reflect === 'undefined' ? undefined : Reflect,
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'%RegExp%': RegExp,
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'%Set%': typeof Set === 'undefined' ? undefined : Set,
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'%SetIteratorPrototype%': typeof Set === 'undefined' || !hasSymbols ? undefined : getProto(new Set()[Symbol.iterator]()),
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'%SharedArrayBuffer%': typeof SharedArrayBuffer === 'undefined' ? undefined : SharedArrayBuffer,
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'%String%': String,
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'%StringIteratorPrototype%': hasSymbols ? getProto(''[Symbol.iterator]()) : undefined,
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'%Symbol%': hasSymbols ? Symbol : undefined,
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'%SyntaxError%': $SyntaxError,
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'%ThrowTypeError%': ThrowTypeError,
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'%TypedArray%': TypedArray,
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'%TypeError%': $TypeError,
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'%Uint8Array%': typeof Uint8Array === 'undefined' ? undefined : Uint8Array,
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'%Uint8ClampedArray%': typeof Uint8ClampedArray === 'undefined' ? undefined : Uint8ClampedArray,
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'%Uint16Array%': typeof Uint16Array === 'undefined' ? undefined : Uint16Array,
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'%Uint32Array%': typeof Uint32Array === 'undefined' ? undefined : Uint32Array,
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'%URIError%': URIError,
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'%WeakMap%': typeof WeakMap === 'undefined' ? undefined : WeakMap,
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'%WeakRef%': typeof WeakRef === 'undefined' ? undefined : WeakRef,
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'%WeakSet%': typeof WeakSet === 'undefined' ? undefined : WeakSet
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};
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var LEGACY_ALIASES = {
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'%ArrayBufferPrototype%': ['ArrayBuffer', 'prototype'],
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'%ArrayPrototype%': ['Array', 'prototype'],
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'%ArrayProto_entries%': ['Array', 'prototype', 'entries'],
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'%ArrayProto_forEach%': ['Array', 'prototype', 'forEach'],
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'%ArrayProto_keys%': ['Array', 'prototype', 'keys'],
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'%ArrayProto_values%': ['Array', 'prototype', 'values'],
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'%AsyncFunctionPrototype%': ['AsyncFunction', 'prototype'],
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'%AsyncGenerator%': ['AsyncGeneratorFunction', 'prototype'],
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'%AsyncGeneratorPrototype%': ['AsyncGeneratorFunction', 'prototype', 'prototype'],
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'%BooleanPrototype%': ['Boolean', 'prototype'],
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'%DataViewPrototype%': ['DataView', 'prototype'],
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'%DatePrototype%': ['Date', 'prototype'],
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'%ErrorPrototype%': ['Error', 'prototype'],
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'%EvalErrorPrototype%': ['EvalError', 'prototype'],
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'%Float32ArrayPrototype%': ['Float32Array', 'prototype'],
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'%Float64ArrayPrototype%': ['Float64Array', 'prototype'],
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'%FunctionPrototype%': ['Function', 'prototype'],
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'%Generator%': ['GeneratorFunction', 'prototype'],
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'%GeneratorPrototype%': ['GeneratorFunction', 'prototype', 'prototype'],
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'%Int8ArrayPrototype%': ['Int8Array', 'prototype'],
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'%Int16ArrayPrototype%': ['Int16Array', 'prototype'],
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'%Int32ArrayPrototype%': ['Int32Array', 'prototype'],
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'%JSONParse%': ['JSON', 'parse'],
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'%JSONStringify%': ['JSON', 'stringify'],
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'%MapPrototype%': ['Map', 'prototype'],
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'%NumberPrototype%': ['Number', 'prototype'],
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'%ObjectPrototype%': ['Object', 'prototype'],
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'%ObjProto_toString%': ['Object', 'prototype', 'toString'],
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'%ObjProto_valueOf%': ['Object', 'prototype', 'valueOf'],
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'%PromisePrototype%': ['Promise', 'prototype'],
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'%PromiseProto_then%': ['Promise', 'prototype', 'then'],
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'%Promise_all%': ['Promise', 'all'],
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'%Promise_reject%': ['Promise', 'reject'],
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'%Promise_resolve%': ['Promise', 'resolve'],
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'%RangeErrorPrototype%': ['RangeError', 'prototype'],
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'%ReferenceErrorPrototype%': ['ReferenceError', 'prototype'],
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'%RegExpPrototype%': ['RegExp', 'prototype'],
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'%SetPrototype%': ['Set', 'prototype'],
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'%SharedArrayBufferPrototype%': ['SharedArrayBuffer', 'prototype'],
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'%StringPrototype%': ['String', 'prototype'],
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'%SymbolPrototype%': ['Symbol', 'prototype'],
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'%SyntaxErrorPrototype%': ['SyntaxError', 'prototype'],
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'%TypedArrayPrototype%': ['TypedArray', 'prototype'],
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'%TypeErrorPrototype%': ['TypeError', 'prototype'],
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'%Uint8ArrayPrototype%': ['Uint8Array', 'prototype'],
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'%Uint8ClampedArrayPrototype%': ['Uint8ClampedArray', 'prototype'],
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'%Uint16ArrayPrototype%': ['Uint16Array', 'prototype'],
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'%Uint32ArrayPrototype%': ['Uint32Array', 'prototype'],
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'%URIErrorPrototype%': ['URIError', 'prototype'],
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'%WeakMapPrototype%': ['WeakMap', 'prototype'],
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'%WeakSetPrototype%': ['WeakSet', 'prototype']
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};
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var bind = require('function-bind');
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var hasOwn = require('has');
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var $concat = bind.call(Function.call, Array.prototype.concat);
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var $spliceApply = bind.call(Function.apply, Array.prototype.splice);
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var $replace = bind.call(Function.call, String.prototype.replace);
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/* adapted from https://github.com/lodash/lodash/blob/4.17.15/dist/lodash.js#L6735-L6744 */
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var rePropName = /[^%.[\]]+|\[(?:(-?\d+(?:\.\d+)?)|(["'])((?:(?!\2)[^\\]|\\.)*?)\2)\]|(?=(?:\.|\[\])(?:\.|\[\]|%$))/g;
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var reEscapeChar = /\\(\\)?/g; /** Used to match backslashes in property paths. */
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var stringToPath = function stringToPath(string) {
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var result = [];
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$replace(string, rePropName, function (match, number, quote, subString) {
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result[result.length] = quote ? $replace(subString, reEscapeChar, '$1') : number || match;
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});
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return result;
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};
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/* end adaptation */
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var getBaseIntrinsic = function getBaseIntrinsic(name, allowMissing) {
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var intrinsicName = name;
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var alias;
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if (hasOwn(LEGACY_ALIASES, intrinsicName)) {
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alias = LEGACY_ALIASES[intrinsicName];
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intrinsicName = '%' + alias[0] + '%';
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}
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if (hasOwn(INTRINSICS, intrinsicName)) {
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var value = INTRINSICS[intrinsicName];
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if (typeof value === 'undefined' && !allowMissing) {
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throw new $TypeError('intrinsic ' + name + ' exists, but is not available. Please file an issue!');
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}
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return {
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alias: alias,
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name: intrinsicName,
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value: value
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};
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}
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throw new $SyntaxError('intrinsic ' + name + ' does not exist!');
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};
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module.exports = function GetIntrinsic(name, allowMissing) {
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if (typeof name !== 'string' || name.length === 0) {
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throw new $TypeError('intrinsic name must be a non-empty string');
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}
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if (arguments.length > 1 && typeof allowMissing !== 'boolean') {
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throw new $TypeError('"allowMissing" argument must be a boolean');
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}
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var parts = stringToPath(name);
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var intrinsicBaseName = parts.length > 0 ? parts[0] : '';
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var intrinsic = getBaseIntrinsic('%' + intrinsicBaseName + '%', allowMissing);
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var intrinsicRealName = intrinsic.name;
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var value = intrinsic.value;
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var skipFurtherCaching = false;
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var alias = intrinsic.alias;
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if (alias) {
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intrinsicBaseName = alias[0];
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$spliceApply(parts, $concat([0, 1], alias));
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}
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for (var i = 1, isOwn = true; i < parts.length; i += 1) {
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var part = parts[i];
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if (part === 'constructor' || !isOwn) {
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skipFurtherCaching = true;
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}
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intrinsicBaseName += '.' + part;
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intrinsicRealName = '%' + intrinsicBaseName + '%';
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if (hasOwn(INTRINSICS, intrinsicRealName)) {
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value = INTRINSICS[intrinsicRealName];
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} else if (value != null) {
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if ($gOPD && (i + 1) >= parts.length) {
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var desc = $gOPD(value, part);
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isOwn = !!desc;
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if (!allowMissing && !(part in value)) {
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throw new $TypeError('base intrinsic for ' + name + ' exists, but the property is not available.');
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}
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// By convention, when a data property is converted to an accessor
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// property to emulate a data property that does not suffer from
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// the override mistake, that accessor's getter is marked with
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// an `originalValue` property. Here, when we detect this, we
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// uphold the illusion by pretending to see that original data
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// property, i.e., returning the value rather than the getter
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// itself.
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if (isOwn && 'get' in desc && !('originalValue' in desc.get)) {
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value = desc.get;
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} else {
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value = value[part];
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}
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} else {
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isOwn = hasOwn(value, part);
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value = value[part];
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}
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if (isOwn && !skipFurtherCaching) {
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INTRINSICS[intrinsicRealName] = value;
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}
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}
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}
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return value;
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};
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