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32 lines
887 B
32 lines
887 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 regexExec = require('call-bind/callBound')('RegExp.prototype.exec'); |
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var Call = require('./Call'); |
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var Get = require('./Get'); |
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var IsCallable = require('./IsCallable'); |
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var Type = require('./Type'); |
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// https://ecma-international.org/ecma-262/6.0/#sec-regexpexec |
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module.exports = function RegExpExec(R, S) { |
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if (Type(R) !== 'Object') { |
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throw new $TypeError('Assertion failed: `R` must be an Object'); |
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} |
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if (Type(S) !== 'String') { |
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throw new $TypeError('Assertion failed: `S` must be a String'); |
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} |
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var exec = Get(R, 'exec'); |
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if (IsCallable(exec)) { |
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var result = Call(exec, R, [S]); |
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if (result === null || Type(result) === 'Object') { |
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return result; |
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} |
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throw new $TypeError('"exec" method must return `null` or an Object'); |
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} |
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return regexExec(R, S); |
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};
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