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22 lines
654 B
22 lines
654 B
'use strict'; |
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var GetIntrinsic = require('get-intrinsic'); |
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var $TypeError = GetIntrinsic('%TypeError%'); |
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var SameValue = require('./SameValue'); |
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var ToNumber = require('./ToNumber'); |
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var ToString = require('./ToString'); |
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var Type = require('./Type'); |
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// https://ecma-international.org/ecma-262/6.0/#sec-canonicalnumericindexstring |
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module.exports = function CanonicalNumericIndexString(argument) { |
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if (Type(argument) !== 'String') { |
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throw new $TypeError('Assertion failed: `argument` must be a String'); |
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} |
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if (argument === '-0') { return -0; } |
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var n = ToNumber(argument); |
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if (SameValue(ToString(n), argument)) { return n; } |
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return void 0; |
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};
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