12345678910111213141516171819202122232425262728293031 |
- 'use strict';
- var $TypeError = require('es-errors/type');
- var regexExec = require('call-bound')('RegExp.prototype.exec');
- var Call = require('./Call');
- var Get = require('./Get');
- var IsCallable = require('./IsCallable');
- var isObject = require('../helpers/isObject');
- // https://262.ecma-international.org/6.0/#sec-regexpexec
- module.exports = function RegExpExec(R, S) {
- if (!isObject(R)) {
- throw new $TypeError('Assertion failed: `R` must be an Object');
- }
- if (typeof 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 || isObject(result)) {
- return result;
- }
- throw new $TypeError('"exec" method must return `null` or an Object');
- }
- return regexExec(R, S);
- };
|