diff options
Diffstat (limited to 'deps/npm/node_modules/node-gyp/node_modules/path-array/node_modules/array-index/node_modules/es6-symbol/polyfill.js')
-rw-r--r-- | deps/npm/node_modules/node-gyp/node_modules/path-array/node_modules/array-index/node_modules/es6-symbol/polyfill.js | 118 |
1 files changed, 0 insertions, 118 deletions
diff --git a/deps/npm/node_modules/node-gyp/node_modules/path-array/node_modules/array-index/node_modules/es6-symbol/polyfill.js b/deps/npm/node_modules/node-gyp/node_modules/path-array/node_modules/array-index/node_modules/es6-symbol/polyfill.js deleted file mode 100644 index 48832a5f36..0000000000 --- a/deps/npm/node_modules/node-gyp/node_modules/path-array/node_modules/array-index/node_modules/es6-symbol/polyfill.js +++ /dev/null @@ -1,118 +0,0 @@ -// ES2015 Symbol polyfill for environments that do not support it (or partially support it) - -'use strict'; - -var d = require('d') - , validateSymbol = require('./validate-symbol') - - , create = Object.create, defineProperties = Object.defineProperties - , defineProperty = Object.defineProperty, objPrototype = Object.prototype - , NativeSymbol, SymbolPolyfill, HiddenSymbol, globalSymbols = create(null) - , isNativeSafe; - -if (typeof Symbol === 'function') { - NativeSymbol = Symbol; - try { - String(NativeSymbol()); - isNativeSafe = true; - } catch (ignore) {} -} - -var generateName = (function () { - var created = create(null); - return function (desc) { - var postfix = 0, name, ie11BugWorkaround; - while (created[desc + (postfix || '')]) ++postfix; - desc += (postfix || ''); - created[desc] = true; - name = '@@' + desc; - defineProperty(objPrototype, name, d.gs(null, function (value) { - // For IE11 issue see: - // https://connect.microsoft.com/IE/feedbackdetail/view/1928508/ - // ie11-broken-getters-on-dom-objects - // https://github.com/medikoo/es6-symbol/issues/12 - if (ie11BugWorkaround) return; - ie11BugWorkaround = true; - defineProperty(this, name, d(value)); - ie11BugWorkaround = false; - })); - return name; - }; -}()); - -// Internal constructor (not one exposed) for creating Symbol instances. -// This one is used to ensure that `someSymbol instanceof Symbol` always return false -HiddenSymbol = function Symbol(description) { - if (this instanceof HiddenSymbol) throw new TypeError('TypeError: Symbol is not a constructor'); - return SymbolPolyfill(description); -}; - -// Exposed `Symbol` constructor -// (returns instances of HiddenSymbol) -module.exports = SymbolPolyfill = function Symbol(description) { - var symbol; - if (this instanceof Symbol) throw new TypeError('TypeError: Symbol is not a constructor'); - if (isNativeSafe) return NativeSymbol(description); - symbol = create(HiddenSymbol.prototype); - description = (description === undefined ? '' : String(description)); - return defineProperties(symbol, { - __description__: d('', description), - __name__: d('', generateName(description)) - }); -}; -defineProperties(SymbolPolyfill, { - for: d(function (key) { - if (globalSymbols[key]) return globalSymbols[key]; - return (globalSymbols[key] = SymbolPolyfill(String(key))); - }), - keyFor: d(function (s) { - var key; - validateSymbol(s); - for (key in globalSymbols) if (globalSymbols[key] === s) return key; - }), - - // If there's native implementation of given symbol, let's fallback to it - // to ensure proper interoperability with other native functions e.g. Array.from - hasInstance: d('', (NativeSymbol && NativeSymbol.hasInstance) || SymbolPolyfill('hasInstance')), - isConcatSpreadable: d('', (NativeSymbol && NativeSymbol.isConcatSpreadable) || - SymbolPolyfill('isConcatSpreadable')), - iterator: d('', (NativeSymbol && NativeSymbol.iterator) || SymbolPolyfill('iterator')), - match: d('', (NativeSymbol && NativeSymbol.match) || SymbolPolyfill('match')), - replace: d('', (NativeSymbol && NativeSymbol.replace) || SymbolPolyfill('replace')), - search: d('', (NativeSymbol && NativeSymbol.search) || SymbolPolyfill('search')), - species: d('', (NativeSymbol && NativeSymbol.species) || SymbolPolyfill('species')), - split: d('', (NativeSymbol && NativeSymbol.split) || SymbolPolyfill('split')), - toPrimitive: d('', (NativeSymbol && NativeSymbol.toPrimitive) || SymbolPolyfill('toPrimitive')), - toStringTag: d('', (NativeSymbol && NativeSymbol.toStringTag) || SymbolPolyfill('toStringTag')), - unscopables: d('', (NativeSymbol && NativeSymbol.unscopables) || SymbolPolyfill('unscopables')) -}); - -// Internal tweaks for real symbol producer -defineProperties(HiddenSymbol.prototype, { - constructor: d(SymbolPolyfill), - toString: d('', function () { return this.__name__; }) -}); - -// Proper implementation of methods exposed on Symbol.prototype -// They won't be accessible on produced symbol instances as they derive from HiddenSymbol.prototype -defineProperties(SymbolPolyfill.prototype, { - toString: d(function () { return 'Symbol (' + validateSymbol(this).__description__ + ')'; }), - valueOf: d(function () { return validateSymbol(this); }) -}); -defineProperty(SymbolPolyfill.prototype, SymbolPolyfill.toPrimitive, d('', function () { - var symbol = validateSymbol(this); - if (typeof symbol === 'symbol') return symbol; - return symbol.toString(); -})); -defineProperty(SymbolPolyfill.prototype, SymbolPolyfill.toStringTag, d('c', 'Symbol')); - -// Proper implementaton of toPrimitive and toStringTag for returned symbol instances -defineProperty(HiddenSymbol.prototype, SymbolPolyfill.toStringTag, - d('c', SymbolPolyfill.prototype[SymbolPolyfill.toStringTag])); - -// Note: It's important to define `toPrimitive` as last one, as some implementations -// implement `toPrimitive` natively without implementing `toStringTag` (or other specified symbols) -// And that may invoke error in definition flow: -// See: https://github.com/medikoo/es6-symbol/issues/13#issuecomment-164146149 -defineProperty(HiddenSymbol.prototype, SymbolPolyfill.toPrimitive, - d('c', SymbolPolyfill.prototype[SymbolPolyfill.toPrimitive])); |