main
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Last change
on this file was d565449, checked in by stefan toskovski <stefantoska84@…>, 4 weeks ago |
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Update repo after prototype presentation
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File size:
515 bytes
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| 1 | 'use strict';
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| 2 |
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| 3 | var $RangeError = require('es-errors/range');
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| 4 |
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| 5 | var ToIntegerOrInfinity = require('./ToIntegerOrInfinity');
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| 6 |
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| 7 | var maxSafeInteger = require('../helpers/maxSafeInteger');
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| 8 |
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| 9 | // https://262.ecma-international.org/15.0/#sec-toindex
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| 10 |
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| 11 | module.exports = function ToIndex(value) {
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| 12 | if (typeof value === 'undefined') {
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| 13 | return 0;
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| 14 | }
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| 15 | var integer = ToIntegerOrInfinity(value);
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| 16 | if (integer < 0 || integer >= maxSafeInteger) {
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| 17 | throw new $RangeError('index must be >= 0 and < 2 ** 53 - 1');
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| 18 | }
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| 19 | return integer;
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| 20 | };
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