shim.js
568 Bytes
'use strict';
var isFunction = require('../../function/is-function')
, slice = Array.prototype.slice, defineProperty = Object.defineProperty
, desc = { configurable: true, enumerable: true, writable: true, value: null };
module.exports = function (/*…items*/) {
var result, i, l;
if (!this || (this === Array) || !isFunction(this)) return slice.call(arguments);
result = new this(l = arguments.length);
for (i = 0; i < l; ++i) {
desc.value = arguments[i];
defineProperty(result, i, desc);
}
desc.value = null;
result.length = l;
return result;
};