Constnium/node_modules/es-abstract/2016/IterableToArrayLike.js
2022-06-23 02:27:43 +02:00

39 lines
1.1 KiB
JavaScript

'use strict';
var callBound = require('call-bind/callBound');
var $arrayPush = callBound('Array.prototype.push');
var getIteratorMethod = require('../helpers/getIteratorMethod');
var AdvanceStringIndex = require('./AdvanceStringIndex');
var GetIterator = require('./GetIterator');
var GetMethod = require('./GetMethod');
var IsArray = require('./IsArray');
var IteratorStep = require('./IteratorStep');
var IteratorValue = require('./IteratorValue');
var ToObject = require('./ToObject');
var ES = {
AdvanceStringIndex: AdvanceStringIndex,
GetMethod: GetMethod,
IsArray: IsArray
};
// https://262.ecma-international.org/7.0/#sec-iterabletoarraylike
module.exports = function IterableToArrayLike(items) {
var usingIterator = getIteratorMethod(ES, items);
if (typeof usingIterator !== 'undefined') {
var iterator = GetIterator(items, usingIterator);
var values = [];
var next = true;
while (next) {
next = IteratorStep(iterator);
if (next) {
var nextValue = IteratorValue(next);
$arrayPush(values, nextValue);
}
}
return values;
}
return ToObject(items);
};