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- 'use strict';
- var ES2016 = require('./es2016');
- var assign = require('./helpers/assign');
- var ES2017 = assign(assign({}, ES2016), {
- ToIndex: function ToIndex(value) {
- if (typeof value === 'undefined') {
- return 0;
- }
- var integerIndex = this.ToInteger(value);
- if (integerIndex < 0) {
- throw new RangeError('index must be >= 0');
- }
- var index = this.ToLength(integerIndex);
- if (!this.SameValueZero(integerIndex, index)) {
- throw new RangeError('index must be >= 0 and < 2 ** 53 - 1');
- }
- return index;
- }
- });
- delete ES2017.EnumerableOwnNames; // replaced with EnumerableOwnProperties
- module.exports = ES2017;
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