/** | |
* Copyright (c) 2014 Petka Antonov | |
* | |
* Permission is hereby granted, free of charge, to any person obtaining a copy | |
* of this software and associated documentation files (the "Software"), to deal | |
* in the Software without restriction, including without limitation the rights | |
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | |
* copies of the Software, and to permit persons to whom the Software is | |
* furnished to do so, subject to the following conditions:</p> | |
* | |
* The above copyright notice and this permission notice shall be included in | |
* all copies or substantial portions of the Software. | |
* | |
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE | |
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | |
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN | |
* THE SOFTWARE. | |
* | |
*/ | |
var isES5 = (function(){ | |
"use strict"; | |
return this === void 0; | |
})(); | |
if (isES5) { | |
module.exports = { | |
freeze: Object.freeze, | |
defineProperty: Object.defineProperty, | |
keys: Object.keys, | |
getPrototypeOf: Object.getPrototypeOf, | |
isArray: Array.isArray, | |
isES5: isES5 | |
}; | |
} | |
else { | |
var has = {}.hasOwnProperty; | |
var str = {}.toString; | |
var proto = {}.constructor.prototype; | |
function ObjectKeys(o) { | |
var ret = []; | |
for (var key in o) { | |
if (has.call(o, key)) { | |
ret.push(key); | |
} | |
} | |
return ret; | |
} | |
function ObjectDefineProperty(o, key, desc) { | |
o[key] = desc.value; | |
return o; | |
} | |
function ObjectFreeze(obj) { | |
return obj; | |
} | |
function ObjectGetPrototypeOf(obj) { | |
try { | |
return Object(obj).constructor.prototype; | |
} | |
catch (e) { | |
return proto; | |
} | |
} | |
function ArrayIsArray(obj) { | |
try { | |
return str.call(obj) === "[object Array]"; | |
} | |
catch(e) { | |
return false; | |
} | |
} | |
module.exports = { | |
isArray: ArrayIsArray, | |
keys: ObjectKeys, | |
defineProperty: ObjectDefineProperty, | |
freeze: ObjectFreeze, | |
getPrototypeOf: ObjectGetPrototypeOf, | |
isES5: isES5 | |
}; | |
} | |