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51 lines
1.2 KiB
51 lines
1.2 KiB
'use strict'; |
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var GetIntrinsic = require('get-intrinsic'); |
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var $BigInt = GetIntrinsic('%BigInt%', true); |
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var $Number = GetIntrinsic('%Number%'); |
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var $TypeError = require('es-errors/type'); |
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var $SyntaxError = require('es-errors/syntax'); |
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var StringToBigInt = require('./StringToBigInt'); |
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var ToPrimitive = require('./ToPrimitive'); |
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// https://262.ecma-international.org/13.0/#sec-tobigint |
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module.exports = function ToBigInt(argument) { |
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if (!$BigInt) { |
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throw new $SyntaxError('BigInts are not supported in this environment'); |
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} |
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var prim = ToPrimitive(argument, $Number); |
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if (prim == null) { |
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throw new $TypeError('Cannot convert null or undefined to a BigInt'); |
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} |
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if (typeof prim === 'boolean') { |
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return prim ? $BigInt(1) : $BigInt(0); |
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} |
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if (typeof prim === 'number') { |
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throw new $TypeError('Cannot convert a Number value to a BigInt'); |
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} |
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if (typeof prim === 'string') { |
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var n = StringToBigInt(prim); |
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if (typeof n === 'undefined') { |
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throw new $TypeError('Failed to parse String to BigInt'); |
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} |
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return n; |
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} |
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if (typeof prim === 'symbol') { |
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throw new $TypeError('Cannot convert a Symbol value to a BigInt'); |
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} |
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if (typeof prim !== 'bigint') { |
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throw new $SyntaxError('Assertion failed: unknown primitive type'); |
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} |
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return prim; |
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};
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