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Commit Description:
move datatable to yarn
Commit Description:
move datatable to yarn
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node_modules/object.assign/hasSymbols.js
| 41 lines
| 1.5 KiB
| application/javascript
| JavascriptLexer
|
| r789 | 'use strict'; | |||
| var keys = require('object-keys'); | ||||
| module.exports = function hasSymbols() { | ||||
| if (typeof Symbol !== 'function' || typeof Object.getOwnPropertySymbols !== 'function') { return false; } | ||||
| if (typeof Symbol.iterator === 'symbol') { return true; } | ||||
| var obj = {}; | ||||
| var sym = Symbol('test'); | ||||
| var symObj = Object(sym); | ||||
| if (typeof sym === 'string') { return false; } | ||||
| if (Object.prototype.toString.call(sym) !== '[object Symbol]') { return false; } | ||||
| if (Object.prototype.toString.call(symObj) !== '[object Symbol]') { return false; } | ||||
| // temp disabled per https://github.com/ljharb/object.assign/issues/17 | ||||
| // if (sym instanceof Symbol) { return false; } | ||||
| // temp disabled per https://github.com/WebReflection/get-own-property-symbols/issues/4 | ||||
| // if (!(symObj instanceof Symbol)) { return false; } | ||||
| var symVal = 42; | ||||
| obj[sym] = symVal; | ||||
| for (sym in obj) { return false; } | ||||
| if (keys(obj).length !== 0) { return false; } | ||||
| if (typeof Object.keys === 'function' && Object.keys(obj).length !== 0) { return false; } | ||||
| if (typeof Object.getOwnPropertyNames === 'function' && Object.getOwnPropertyNames(obj).length !== 0) { return false; } | ||||
| var syms = Object.getOwnPropertySymbols(obj); | ||||
| if (syms.length !== 1 || syms[0] !== sym) { return false; } | ||||
| if (!Object.prototype.propertyIsEnumerable.call(obj, sym)) { return false; } | ||||
| if (typeof Object.getOwnPropertyDescriptor === 'function') { | ||||
| var descriptor = Object.getOwnPropertyDescriptor(obj, sym); | ||||
| if (descriptor.value !== symVal || descriptor.enumerable !== true) { return false; } | ||||
| } | ||||
| return true; | ||||
| }; | ||||