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14 lines
457 B
14 lines
457 B
var toIntegerOrInfinity = require('../internals/to-integer-or-infinity'); |
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var toLength = require('../internals/to-length'); |
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var $RangeError = RangeError; |
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// `ToIndex` abstract operation |
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// https://tc39.es/ecma262/#sec-toindex |
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module.exports = function (it) { |
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if (it === undefined) return 0; |
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var number = toIntegerOrInfinity(it); |
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var length = toLength(number); |
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if (number !== length) throw $RangeError('Wrong length or index'); |
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return length; |
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};
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