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