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54 lines
1.3 KiB
Plaintext
54 lines
1.3 KiB
Plaintext
'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 $SyntaxError = require('es-errors/syntax');
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var StringToBigInt = require('./StringToBigInt');
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var ToPrimitive = require('./ToPrimitive');
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var isNaN = require('math-intrinsics/isNaN');
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// https://262.ecma-international.org/11.0/#sec-tobigint
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module.exports = function ToBigInt(argument) {
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if (!$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 (isNaN(n)) {
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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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