bob-gray/solv

/* global Symbol */
/* istanbul ignore if */
if (typeof define !== "function") {
    var define = require("amdefine")(module);
}

define(function (require) {
    "use strict";

    /*meta({
        "name": "Array",
        "type": "class",
        "global": true
    })

    meta({
        "name": "from",
        "static": true,
        "shim": true,
        "description": "Gets a real array from an array-like object",
        "arguments": [{
            "name": "arrayLike",
            "type": "object",
            "description": "Any object with a length property and indexed values; such as arguments"
        }],
        "returns": "array"
    })*/

    require("../class/shim");

    var type = require("../type");

    /* jshint -W074 */
    Array.shimStatic("from", function (arrayLike, map, context) {
        var array;

        if (type.is.not("array", arrayLike) && typeof Symbol === "function" && Symbol.iterator && arrayLike[Symbol.iterator]) {
            array = fromIterator(arrayLike);
        } else {
            array = this.prototype.slice.call(arrayLike);
        }

        if (map) {
            array = array.map(map, context);
        }

        return array;
    });
    /* jshint +W074 */

    function fromIterator (arrayLike) {
        var array = [],
            iterator = arrayLike[Symbol.iterator](),
            item = iterator.next();

        while (!item.done) {
            array.push(item.value);
            item = iterator.next();
        }

        return array;
    }
});