27 lines
802 B
JavaScript
27 lines
802 B
JavaScript
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'use strict';
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var GetIntrinsic = require('get-intrinsic');
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var $TypeError = require('es-errors/type');
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var $Number = GetIntrinsic('%Number%');
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var isPrimitive = require('../helpers/isPrimitive');
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var ToPrimitive = require('./ToPrimitive');
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var StringToNumber = require('./StringToNumber');
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// https://262.ecma-international.org/13.0/#sec-tonumber
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module.exports = function ToNumber(argument) {
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var value = isPrimitive(argument) ? argument : ToPrimitive(argument, $Number);
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if (typeof value === 'symbol') {
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throw new $TypeError('Cannot convert a Symbol value to a number');
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}
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if (typeof value === 'bigint') {
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throw new $TypeError('Conversion from \'BigInt\' to \'number\' is not allowed.');
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}
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if (typeof value === 'string') {
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return StringToNumber(value);
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}
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return $Number(value);
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};
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