Merge pull request #944 from zloirock/re

close #792, close #521
zloirock · Jun 20, 2021 · 913625f · 913625f
2 parents fad1d44 + 12e0678
commit 913625f
Show file tree

Hide file tree

Showing 27 changed files with 414 additions and 146 deletions.
diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -1,13 +1,15 @@
 ## Changelog
 ##### Unreleased
+- Added `RegExp` named capture groups polyfill, [#521](https://github.com/zloirock/core-js/issues/521)
+- Added `RegExp` `dotAll` flag polyfill, [#792](https://github.com/zloirock/core-js/issues/792)
 - Added missed polyfills of [Annex B](https://tc39.es/ecma262/#sec-additional-built-in-properties) features (required mainly for some non-browser engines), [#336](https://github.com/zloirock/core-js/issues/336):
   - `escape`
   - `unescape`
   - `String.prototype.substr`
   - `Date.prototype.getYear`
   - `Date.prototype.setYear`
   - `Date.prototype.toGMTString`
-- Fixed detection of forbidden host code points in URL polyfill
+- Fixed detection of forbidden host code points in `URL` polyfill
 - Allowed `rhino` target in `core-js-compat` / `core-js-builder`, added compat data for `rhino` 1.7.13, [#942](https://github.com/zloirock/core-js/issues/942), thanks [@gausie](https://github.com/gausie)
 - `.at` marked as supported from FF90
 

diff --git a/README.md b/README.md
@@ -669,7 +669,7 @@ Adding support of well-known [symbols](#ecmascript-symbol) `@@match`, `@@replace
 
 Annex B methods. Modules [`es.string.anchor`](https://github.com/zloirock/core-js/blob/master/packages/core-js/modules/es.string.anchor.js), [`es.string.big`](https://github.com/zloirock/core-js/blob/master/packages/core-js/modules/es.string.big.js), [`es.string.blink`](https://github.com/zloirock/core-js/blob/master/packages/core-js/modules/es.string.blink.js), [`es.string.bold`](https://github.com/zloirock/core-js/blob/master/packages/core-js/modules/es.string.bold.js), [`es.string.fixed`](https://github.com/zloirock/core-js/blob/master/packages/core-js/modules/es.string.fixed.js), [`es.string.fontcolor`](https://github.com/zloirock/core-js/blob/master/packages/core-js/modules/es.string.fontcolor.js), [`es.string.fontsize`](https://github.com/zloirock/core-js/blob/master/packages/core-js/modules/es.string.fontsize.js), [`es.string.italics`](https://github.com/zloirock/core-js/blob/master/packages/core-js/modules/es.string.italics.js), [`es.string.link`](https://github.com/zloirock/core-js/blob/master/packages/core-js/modules/es.string.link.js), [`es.string.small`](https://github.com/zloirock/core-js/blob/master/packages/core-js/modules/es.string.small.js), [`es.string.strike`](https://github.com/zloirock/core-js/blob/master/packages/core-js/modules/es.string.strike.js), [`es.string.sub`](https://github.com/zloirock/core-js/blob/master/packages/core-js/modules/es.string.sub.js), [`es.string.sup`](https://github.com/zloirock/core-js/blob/master/packages/core-js/modules/es.string.sup.js), [`es.string.substr`](https://github.com/zloirock/core-js/blob/master/packages/core-js/modules/es.string.substr.js), [`es.escape`](https://github.com/zloirock/core-js/blob/master/packages/core-js/modules/es.escape.js) and [`es.unescape`](https://github.com/zloirock/core-js/blob/master/packages/core-js/modules/es.unescape.js).
 
-`RegExp` features: modules [`es.regexp.constructor`](https://github.com/zloirock/core-js/blob/master/packages/core-js/modules/es.regexp.constructor.js), [`es.regexp.flags`](https://github.com/zloirock/core-js/blob/master/packages/core-js/modules/es.regexp.flags.js), [`es.regexp.sticky`](https://github.com/zloirock/core-js/blob/master/packages/core-js/modules/es.regexp.sticky.js) and [`es.regexp.test`](https://github.com/zloirock/core-js/blob/master/packages/core-js/modules/es.regexp.test.js).
+`RegExp` features: modules [`es.regexp.constructor`](https://github.com/zloirock/core-js/blob/master/packages/core-js/modules/es.regexp.constructor.js), [`es.regexp.dot-all`](https://github.com/zloirock/core-js/blob/master/packages/core-js/modules/es.regexp.dot-all.js), [`es.regexp.flags`](https://github.com/zloirock/core-js/blob/master/packages/core-js/modules/es.regexp.flags.js), [`es.regexp.sticky`](https://github.com/zloirock/core-js/blob/master/packages/core-js/modules/es.regexp.sticky.js) and [`es.regexp.test`](https://github.com/zloirock/core-js/blob/master/packages/core-js/modules/es.regexp.test.js).
 ```js
 class String {
   static fromCodePoint(...codePoints: Array<number>): string;
@@ -710,7 +710,8 @@ class String {
 }
 
 class RegExp {
-  constructor(pattern: RegExp | string, flags?: string): RegExp; // support of sticky (`y`) flag; can alter flags
+  // support of sticky (`y`) flag, dotAll (`s`) flag, named capture groups, can alter flags
+  constructor(pattern: RegExp | string, flags?: string): RegExp;
   exec(): Array<string | undefined> | null; // IE8 fixes
   test(string: string): boolean; // delegation to `.exec`
   toString(): string; // ES2015+ fix - generic
@@ -719,8 +720,9 @@ class RegExp {
   @@replace(string: string, replaceValue: Function | string): string;
   @@search(string: string): number;
   @@split(string: string, limit: number): Array<string>;
-  readonly attribute flags: string; // IE9+
-  readonly attribute sticky: boolean;
+  readonly attribute dotAll: boolean; // IE9+
+  readonly attribute flags: string;   // IE9+
+  readonly attribute sticky: boolean; // IE9+
 }
 
 function escape(string: string): string;
@@ -766,14 +768,15 @@ core-js(-pure)/es|stable|features/string(/virtual)/sup
 core-js(-pure)/es|stable|features/string(/virtual)/iterator
 core-js/es|stable|features/regexp
 core-js/es|stable|features/regexp/constructor
+core-js/es|stable|features/regexp/dot-all
 core-js(-pure)/es|stable|features/regexp/flags
 core-js/es|stable|features/regexp/sticky
 core-js/es|stable|features/regexp/test
 core-js/es|stable|features/regexp/to-string
 core-js/es|stable|features/escape
 core-js/es|stable|features/unescape
 ```
-[*Examples*](http://es6.zloirock.ru/#for(var%20val%20of%20'a%F0%A0%AE%B7b')%7B%0A%20%20log(val)%3B%20%2F%2F%20%3D%3E%20'a'%2C%20'%F0%A0%AE%B7'%2C%20'b'%0A%7D%0A%0Alog('foobarbaz'.includes('bar'))%3B%20%20%20%20%20%20%2F%2F%20%3D%3E%20true%0Alog('foobarbaz'.includes('bar'%2C%204))%3B%20%20%20%2F%2F%20%3D%3E%20false%0Alog('foobarbaz'.startsWith('foo'))%3B%20%20%20%20%2F%2F%20%3D%3E%20true%0Alog('foobarbaz'.startsWith('bar'%2C%203))%3B%20%2F%2F%20%3D%3E%20true%0Alog('foobarbaz'.endsWith('baz'))%3B%20%20%20%20%20%20%2F%2F%20%3D%3E%20true%0Alog('foobarbaz'.endsWith('bar'%2C%206))%3B%20%20%20%2F%2F%20%3D%3E%20true%0A%0Alog('string'.repeat(3))%3B%20%2F%2F%20%3D%3E%20'stringstringstring'%0A%0Alog('hello'.padStart(10))%3B%20%20%20%20%20%20%20%20%20%2F%2F%20%3D%3E%20'%20%20%20%20%20hello'%0Alog('hello'.padStart(10%2C%20'1234'))%3B%20%2F%2F%20%3D%3E%20'12341hello'%0Alog('hello'.padEnd(10))%3B%20%20%20%20%20%20%20%20%20%20%20%2F%2F%20%3D%3E%20'hello%20%20%20%20%20'%0Alog('hello'.padEnd(10%2C%20'1234'))%3B%20%20%20%2F%2F%20%3D%3E%20'hello12341'%0A%0Alog('%F0%A0%AE%B7'.codePointAt(0))%3B%20%2F%2F%20%3D%3E%20134071%0A%0Avar%20name%20%3D%20'Bob'%3B%0Alog(String.raw%60Hi%5Cn%24%7Bname%7D!%60)%3B%20%20%20%20%20%20%20%20%20%20%20%20%20%2F%2F%20%3D%3E%20'Hi%5C%5CnBob!'%20(ES6%20template%20string%20syntax)%0Alog(String.raw(%7B%20raw%3A%20'test'%20%7D%2C%200%2C%201%2C%202))%3B%20%2F%2F%20%3D%3E%20%2F%2F%20't0e1s2t'%0A%0Alog('foo'.bold())%3B%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%2F%2F%20%3D%3E%20'%3Cb%3Efoo%3C%2Fb%3E'%0Alog('bar'.anchor('a%22b'))%3B%20%20%20%20%20%20%20%20%20%20%20%20%20%20%2F%2F%20%3D%3E%20'%3Ca%20name%3D%22a%26quot%3Bb%22%3Ebar%3C%2Fa%3E'%0Alog('baz'.link('http%3A%2F%2Fexample.com'))%3B%20%2F%2F%20%3D%3E%20'%3Ca%20href%3D%22http%3A%2F%2Fexample.com%22%3Ebaz%3C%2Fa%3E'%0A%0Alog(RegExp(%2F.%2Fg%2C%20'm'))%3B%20%2F%2F%20%3D%3E%20%2F.%2Fm%0A%0Alog(%2Ffoo%2F.flags)%3B%20%20%20%20%2F%2F%20%3D%3E%20''%0Alog(%2Ffoo%2Fgim.flags)%3B%20%2F%2F%20%3D%3E%20'gim'%0A%0Alog(RegExp('foo'%2C%20'y').sticky)%3B%20%2F%2F%20%3D%3E%20true%0A%0Aconst%20text%20%3D%20'First%20line%5CnSecond%20line'%3B%0Aconst%20regex%20%3D%20RegExp('(%5C%5CS%2B)%20line%5C%5Cn%3F'%2C%20'y')%3B%0A%0Alog(regex.exec(text)%5B1%5D)%3B%20%2F%2F%20%3D%3E%20'First'%0Alog(regex.exec(text)%5B1%5D)%3B%20%2F%2F%20%3D%3E%20'Second'%0Alog(regex.exec(text))%3B%20%20%20%20%2F%2F%20%3D%3E%20null%0A%0Alog('foo'.match(%7B%5BSymbol.match%5D%3A%20_%20%3D%3E%201%7D))%3B%20%20%20%20%20%2F%2F%20%3D%3E%201%0Alog('foo'.replace(%7B%5BSymbol.replace%5D%3A%20_%20%3D%3E%202%7D))%3B%20%2F%2F%20%3D%3E%202%0Alog('foo'.search(%7B%5BSymbol.search%5D%3A%20_%20%3D%3E%203%7D))%3B%20%20%20%2F%2F%20%3D%3E%203%0Alog('foo'.split(%7B%5BSymbol.split%5D%3A%20_%20%3D%3E%204%7D))%3B%20%20%20%20%20%2F%2F%20%3D%3E%204%0A%0Alog(RegExp.prototype.toString.call(%7Bsource%3A%20'foo'%2C%20flags%3A%20'bar'%7D))%3B%0A%0Alog('%20%20%20hello%20%20%20'.trimLeft())%3B%20%20%2F%2F%20%3D%3E%20'hello%20%20%20'%0Alog('%20%20%20hello%20%20%20'.trimRight())%3B%20%2F%2F%20%3D%3E%20'%20%20%20hello'%0Alog('%20%20%20hello%20%20%20'.trimStart())%3B%20%2F%2F%20%3D%3E%20'hello%20%20%20'%0Alog('%20%20%20hello%20%20%20'.trimEnd())%3B%20%20%20%2F%2F%20%3D%3E%20'%20%20%20hello'%0A%0Afor%20(let%20%5B_%2C%20d%2C%20D%5D%20of%20'1111a2b3cccc'.matchAll(%2F(%5Cd)(%5CD)%2Fg))%20%7B%0A%20%20log(d%2C%20D)%3B%20%2F%2F%20%3D%3E%201%20a%2C%202%20b%2C%203%20c%0A%7D%0A%0Alog('Test%20abc%20test%20test%20abc%20test.'.replaceAll('abc'%2C%20'foo'))%3B%20%2F%2F%20-%3E%20'Test%20foo%20test%20test%20foo%20test.'):
+[*Examples*](http://es6.zloirock.ru/#for(var%20val%20of%20'a%F0%A0%AE%B7b')%7B%0A%20%20log(val)%3B%20%2F%2F%20%3D%3E%20'a'%2C%20'%F0%A0%AE%B7'%2C%20'b'%0A%7D%0A%0Alog('foobarbaz'.includes('bar'))%3B%20%20%20%20%20%20%2F%2F%20%3D%3E%20true%0Alog('foobarbaz'.includes('bar'%2C%204))%3B%20%20%20%2F%2F%20%3D%3E%20false%0Alog('foobarbaz'.startsWith('foo'))%3B%20%20%20%20%2F%2F%20%3D%3E%20true%0Alog('foobarbaz'.startsWith('bar'%2C%203))%3B%20%2F%2F%20%3D%3E%20true%0Alog('foobarbaz'.endsWith('baz'))%3B%20%20%20%20%20%20%2F%2F%20%3D%3E%20true%0Alog('foobarbaz'.endsWith('bar'%2C%206))%3B%20%20%20%2F%2F%20%3D%3E%20true%0A%0Alog('string'.repeat(3))%3B%20%2F%2F%20%3D%3E%20'stringstringstring'%0A%0Alog('hello'.padStart(10))%3B%20%20%20%20%20%20%20%20%20%2F%2F%20%3D%3E%20'%20%20%20%20%20hello'%0Alog('hello'.padStart(10%2C%20'1234'))%3B%20%2F%2F%20%3D%3E%20'12341hello'%0Alog('hello'.padEnd(10))%3B%20%20%20%20%20%20%20%20%20%20%20%2F%2F%20%3D%3E%20'hello%20%20%20%20%20'%0Alog('hello'.padEnd(10%2C%20'1234'))%3B%20%20%20%2F%2F%20%3D%3E%20'hello12341'%0A%0Alog('%F0%A0%AE%B7'.codePointAt(0))%3B%20%2F%2F%20%3D%3E%20134071%0A%0Avar%20name%20%3D%20'Bob'%3B%0Alog(String.raw%60Hi%5Cn%24%7Bname%7D!%60)%3B%20%20%20%20%20%20%20%20%20%20%20%20%20%2F%2F%20%3D%3E%20'Hi%5C%5CnBob!'%20(ES6%20template%20string%20syntax)%0Alog(String.raw(%7B%20raw%3A%20'test'%20%7D%2C%200%2C%201%2C%202))%3B%20%2F%2F%20%3D%3E%20%2F%2F%20't0e1s2t'%0A%0Alog('foo'.bold())%3B%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%2F%2F%20%3D%3E%20'%3Cb%3Efoo%3C%2Fb%3E'%0Alog('bar'.anchor('a%22b'))%3B%20%20%20%20%20%20%20%20%20%20%20%20%20%20%2F%2F%20%3D%3E%20'%3Ca%20name%3D%22a%26quot%3Bb%22%3Ebar%3C%2Fa%3E'%0Alog('baz'.link('http%3A%2F%2Fexample.com'))%3B%20%2F%2F%20%3D%3E%20'%3Ca%20href%3D%22http%3A%2F%2Fexample.com%22%3Ebaz%3C%2Fa%3E'%0A%0Alog(RegExp('.'%2C%20's').test('%5Cn'))%3B%20%2F%2F%20%3D%3E%20true%0Alog(RegExp('.'%2C%20's').dotAll)%3B%20%20%20%20%20%2F%2F%20%3D%3E%20true%0A%0Alog(RegExp('foo%3A(%3F%3Cfoo%3E%5C%5Cw%2B)%2Cbar%3A(%3F%3Cbar%3E%5C%5Cw%2B)').exec('foo%3Aabc%2Cbar%3Adef').groups.bar)%3B%20%2F%2F%20%3D%3E%20'def'%0A%0Alog('foo%3Aabc%2Cbar%3Adef'.replace(RegExp('foo%3A(%3F%3Cfoo%3E%5C%5Cw%2B)%2Cbar%3A(%3F%3Cbar%3E%5C%5Cw%2B)')%2C%20'%24%3Cbar%3E%2C%24%3Cfoo%3E'))%3B%20%2F%2F%20%3D%3E%20'def%2Cabc'%0A%0Alog(RegExp(%2F.%2Fg%2C%20'm'))%3B%20%2F%2F%20%3D%3E%20%2F.%2Fm%0A%0Alog(%2Ffoo%2F.flags)%3B%20%20%20%20%2F%2F%20%3D%3E%20''%0Alog(%2Ffoo%2Fgim.flags)%3B%20%2F%2F%20%3D%3E%20'gim'%0A%0Alog(RegExp('foo'%2C%20'y').sticky)%3B%20%2F%2F%20%3D%3E%20true%0A%0Aconst%20text%20%3D%20'First%20line%5CnSecond%20line'%3B%0Aconst%20regex%20%3D%20RegExp('(%5C%5CS%2B)%20line%5C%5Cn%3F'%2C%20'y')%3B%0A%0Alog(regex.exec(text)%5B1%5D)%3B%20%2F%2F%20%3D%3E%20'First'%0Alog(regex.exec(text)%5B1%5D)%3B%20%2F%2F%20%3D%3E%20'Second'%0Alog(regex.exec(text))%3B%20%20%20%20%2F%2F%20%3D%3E%20null%0A%0Alog('foo'.match(%7B%5BSymbol.match%5D%3A%20_%20%3D%3E%201%7D))%3B%20%20%20%20%20%2F%2F%20%3D%3E%201%0Alog('foo'.replace(%7B%5BSymbol.replace%5D%3A%20_%20%3D%3E%202%7D))%3B%20%2F%2F%20%3D%3E%202%0Alog('foo'.search(%7B%5BSymbol.search%5D%3A%20_%20%3D%3E%203%7D))%3B%20%20%20%2F%2F%20%3D%3E%203%0Alog('foo'.split(%7B%5BSymbol.split%5D%3A%20_%20%3D%3E%204%7D))%3B%20%20%20%20%20%2F%2F%20%3D%3E%204%0A%0Alog(RegExp.prototype.toString.call(%7Bsource%3A%20'foo'%2C%20flags%3A%20'bar'%7D))%3B%0A%0Alog('%20%20%20hello%20%20%20'.trimLeft())%3B%20%20%2F%2F%20%3D%3E%20'hello%20%20%20'%0Alog('%20%20%20hello%20%20%20'.trimRight())%3B%20%2F%2F%20%3D%3E%20'%20%20%20hello'%0Alog('%20%20%20hello%20%20%20'.trimStart())%3B%20%2F%2F%20%3D%3E%20'hello%20%20%20'%0Alog('%20%20%20hello%20%20%20'.trimEnd())%3B%20%20%20%2F%2F%20%3D%3E%20'%20%20%20hello'%0A%0Afor%20(let%20%5B_%2C%20d%2C%20D%5D%20of%20'1111a2b3cccc'.matchAll(%2F(%5Cd)(%5CD)%2Fg))%20%7B%0A%20%20log(d%2C%20D)%3B%20%2F%2F%20%3D%3E%201%20a%2C%202%20b%2C%203%20c%0A%7D%0A%0Alog('Test%20abc%20test%20test%20abc%20test.'.replaceAll('abc'%2C%20'foo'))%3B%20%2F%2F%20-%3E%20'Test%20foo%20test%20test%20foo%20test.'):
 ```js
 for (let value of 'a𠮷b') {
   console.log(value); // => 'a', '𠮷', 'b'
@@ -804,6 +807,13 @@ String.raw({ raw: 'test' }, 0, 1, 2); // => 't0e1s2t'
 'bar'.anchor('a"b');              // => '<a name="a&quot;b">bar</a>'
 'baz'.link('http://example.com'); // => '<a href="http://example.com">baz</a>'
 
+RegExp('.', 's').test('\n'); // => true
+RegExp('.', 's').dotAll;     // => true
+
+RegExp('foo:(?<foo>\\w+),bar:(?<bar>\\w+)').exec('foo:abc,bar:def').groups.bar; // => 'def'
+
+'foo:abc,bar:def'.replace(RegExp('foo:(?<foo>\\w+),bar:(?<bar>\\w+)'), '$<bar>,$<foo>'); // => 'def,abc'
+
 RegExp(/./g, 'm'); // => /./m
 
 /foo/.flags;    // => ''

diff --git a/packages/core-js-compat/src/data.js b/packages/core-js-compat/src/data.js
@@ -929,20 +929,24 @@ const data = {
     safari: '14.0',
   },
   'es.regexp.constructor': {
-    chrome: '51',
-    firefox: '49',
-    safari: '10.0',
+    chrome: '64',
+    firefox: '78',
+    safari: '11.1',
+  },
+  'es.regexp.dot-all': {
+    chrome: '62',
+    firefox: '78',
+    safari: '11.1',
   },
   'es.regexp.exec': {
-    chrome: '26',
-    edge: '13',
-    firefox: '44',
-    safari: '10.0',
+    chrome: '64',
+    firefox: '78',
+    safari: '11.1',
   },
   'es.regexp.flags': {
-    chrome: '49',
-    firefox: '37',
-    safari: '9.0',
+    chrome: '62',
+    firefox: '78',
+    safari: '11.1',
   },
   'es.regexp.sticky': {
     chrome: '49',

diff --git a/packages/core-js-compat/src/modules-by-versions.js b/packages/core-js-compat/src/modules-by-versions.js
@@ -92,6 +92,7 @@ module.exports = {
     'es.date.set-year',
     'es.date.to-gmt-string',
     'es.escape',
+    'es.regexp.dot-all',
     'es.string.substr',
     'es.unescape',
   ],

diff --git a/packages/core-js-pure/override/internals/regexp-unsupported-dot-all.js b/packages/core-js-pure/override/internals/regexp-unsupported-dot-all.js
@@ -0,0 +1 @@
+// empty
diff --git a/packages/core-js-pure/override/modules/es.regexp.dot-all.js b/packages/core-js-pure/override/modules/es.regexp.dot-all.js
@@ -0,0 +1 @@
+// empty
diff --git a/packages/core-js/es/regexp/dot-all.js b/packages/core-js/es/regexp/dot-all.js
@@ -0,0 +1,7 @@
+require('../../modules/es.regexp.constructor');
+require('../../modules/es.regexp.dot-all');
+require('../../modules/es.regexp.exec');
+
+module.exports = function (it) {
+  return it.sticky;
+};
diff --git a/packages/core-js/es/regexp/index.js b/packages/core-js/es/regexp/index.js
@@ -1,5 +1,6 @@
 require('../../modules/es.regexp.constructor');
 require('../../modules/es.regexp.to-string');
+require('../../modules/es.regexp.dot-all');
 require('../../modules/es.regexp.exec');
 require('../../modules/es.regexp.flags');
 require('../../modules/es.regexp.sticky');

diff --git a/packages/core-js/es/regexp/sticky.js b/packages/core-js/es/regexp/sticky.js
@@ -1,3 +1,5 @@
+require('../../modules/es.regexp.constructor');
+require('../../modules/es.regexp.exec');
 require('../../modules/es.regexp.sticky');
 
 module.exports = function (it) {

diff --git a/packages/core-js/features/regexp/dot-all.js b/packages/core-js/features/regexp/dot-all.js
@@ -0,0 +1,3 @@
+var parent = require('../../stable/regexp/dot-all');
+
+module.exports = parent;
diff --git a/packages/core-js/internals/fix-regexp-well-known-symbol-logic.js b/packages/core-js/internals/fix-regexp-well-known-symbol-logic.js
@@ -10,47 +10,7 @@ var createNonEnumerableProperty = require('../internals/create-non-enumerable-pr
 var SPECIES = wellKnownSymbol('species');
 var RegExpPrototype = RegExp.prototype;
 
-var REPLACE_SUPPORTS_NAMED_GROUPS = !fails(function () {
-  // #replace needs built-in support for named groups.
-  // #match works fine because it just return the exec results, even if it has
-  // a "grops" property.
-  var re = /./;
-  re.exec = function () {
-    var result = [];
-    result.groups = { a: '7' };
-    return result;
-  };
-  return ''.replace(re, '$<a>') !== '7';
-});
-
-// IE <= 11 replaces $0 with the whole match, as if it was $&
-// https://stackoverflow.com/questions/6024666/getting-ie-to-replace-a-regex-with-the-literal-string-0
-var REPLACE_KEEPS_$0 = (function () {
-  // eslint-disable-next-line regexp/prefer-escape-replacement-dollar-char -- required for testing
-  return 'a'.replace(/./, '$0') === '$0';
-})();
-
-var REPLACE = wellKnownSymbol('replace');
-// Safari <= 13.0.3(?) substitutes nth capture where n>m with an empty string
-var REGEXP_REPLACE_SUBSTITUTES_UNDEFINED_CAPTURE = (function () {
-  if (/./[REPLACE]) {
-    return /./[REPLACE]('a', '$0') === '';
-  }
-  return false;
-})();
-
-// Chrome 51 has a buggy "split" implementation when RegExp#exec !== nativeExec
-// Weex JS has frozen built-in prototypes, so use try / catch wrapper
-var SPLIT_WORKS_WITH_OVERWRITTEN_EXEC = !fails(function () {
-  // eslint-disable-next-line regexp/no-empty-group -- required for testing
-  var re = /(?:)/;
-  var originalExec = re.exec;
-  re.exec = function () { return originalExec.apply(this, arguments); };
-  var result = 'ab'.split(re);
-  return result.length !== 2 || result[0] !== 'a' || result[1] !== 'b';
-});
-
-module.exports = function (KEY, length, exec, sham) {
+module.exports = function (KEY, exec, FORCED, SHAM) {
   var SYMBOL = wellKnownSymbol(KEY);
 
   var DELEGATES_TO_SYMBOL = !fails(function () {
@@ -87,12 +47,7 @@ module.exports = function (KEY, length, exec, sham) {
   if (
     !DELEGATES_TO_SYMBOL ||
     !DELEGATES_TO_EXEC ||
-    (KEY === 'replace' && !(
-      REPLACE_SUPPORTS_NAMED_GROUPS &&
-      REPLACE_KEEPS_$0 &&
-      !REGEXP_REPLACE_SUBSTITUTES_UNDEFINED_CAPTURE
-    )) ||
-    (KEY === 'split' && !SPLIT_WORKS_WITH_OVERWRITTEN_EXEC)
+    FORCED
   ) {
     var nativeRegExpMethod = /./[SYMBOL];
     var methods = exec(SYMBOL, ''[KEY], function (nativeMethod, regexp, str, arg2, forceStringMethod) {
@@ -107,23 +62,11 @@ module.exports = function (KEY, length, exec, sham) {
         return { done: true, value: nativeMethod.call(str, regexp, arg2) };
       }
       return { done: false };
-    }, {
-      REPLACE_KEEPS_$0: REPLACE_KEEPS_$0,
-      REGEXP_REPLACE_SUBSTITUTES_UNDEFINED_CAPTURE: REGEXP_REPLACE_SUBSTITUTES_UNDEFINED_CAPTURE
     });
-    var stringMethod = methods[0];
-    var regexMethod = methods[1];
 
-    redefine(String.prototype, KEY, stringMethod);
-    redefine(RegExpPrototype, SYMBOL, length == 2
-      // 21.2.5.8 RegExp.prototype[@@replace](string, replaceValue)
-      // 21.2.5.11 RegExp.prototype[@@split](string, limit)
-      ? function (string, arg) { return regexMethod.call(string, this, arg); }
-      // 21.2.5.6 RegExp.prototype[@@match](string)
-      // 21.2.5.9 RegExp.prototype[@@search](string)
-      : function (string) { return regexMethod.call(string, this); }
-    );
+    redefine(String.prototype, KEY, methods[0]);
+    redefine(RegExpPrototype, SYMBOL, methods[1]);
   }
 
-  if (sham) createNonEnumerableProperty(RegExpPrototype[SYMBOL], 'sham', true);
+  if (SHAM) createNonEnumerableProperty(RegExpPrototype[SYMBOL], 'sham', true);
 };