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