add tests

tests/compat/tests.js

@@ -1747,6 +1747,9 @@ GLOBAL.tests = {
   'esnext.promise.with-resolvers': [PROMISES_SUPPORT, function () {
     return Promise.withResolvers;
   }],
+  'esnext.regexp.escape': function () {
+    return RegExp.escape;
+  },
   'esnext.set.add-all': function () {
     return Set.prototype.addAll;
   },

tests/entries/unit.mjs

@@ -819,6 +819,7 @@ for (PATH of ['core-js-pure', 'core-js']) {
     ok(typeof load(NS, 'reflect/has-own-metadata') == 'function');
     ok(typeof load(NS, 'reflect/metadata') == 'function');
     ok(load(NS, 'promise/try')(() => 42) instanceof load(NS, 'promise'));
+    ok(load(NS, 'regexp/escape')('10$') === '\\x310\\$');
     ok(load(NS, 'set/add-all')(new Set([1, 2, 3]), 4, 5).size === 5);
     ok(load(NS, 'set/delete-all')(new Set([1, 2, 3]), 4, 5) === false);
     ok(load(NS, 'set/every')(new Set([1, 2, 3]), it => typeof it == 'number'));
@@ -953,6 +954,7 @@ for (PATH of ['core-js-pure', 'core-js']) {
   load('proposals/promise-with-resolvers');
   load('proposals/reflect-metadata');
   load('proposals/regexp-dotall-flag');
+  load('proposals/regexp-escaping');
   load('proposals/regexp-named-groups');
   load('proposals/relative-indexing-method');
   load('proposals/seeded-random');

tests/unit-global/esnext.regexp.escape.js

@@ -0,0 +1,27 @@
+import { createConversionChecker } from '../helpers/helpers.js';
+
+QUnit.test('RegExp.escape', assert => {
+  const { escape } = RegExp;
+  assert.isFunction(escape);
+  assert.arity(escape, 1);
+  assert.name(escape, 'escape');
+  assert.looksNative(escape);
+  assert.nonEnumerable(RegExp, 'escape');
+
+  assert.same(escape('10$'), '\\x310\\$', '10$');
+  assert.same(escape('abcdefg_123456'), 'abcdefg_123456', 'abcdefg_123456');
+  assert.same(
+    escape('(){}[]|,.?*+-^$=<>\\/#&!%:;@~\'"`'),
+    '\\(\\)\\{\\}\\[\\]\\|\\,\\.\\?\\*\\+\\-\\^\\$\\=\\<\\>\\\\\\/\\#\\&\\!\\%\\:\\;\\@\\~\\\'\\"\\`',
+    '(){}[]|,.?*+-^$=<>\\/#&!%:;@~\'"`',
+  );
+
+  const checker = createConversionChecker('10$');
+  assert.same(escape(checker), '\\x310\\$', 'checker result');
+  assert.same(checker.$valueOf, 0, 'checker valueOf calls');
+  assert.same(checker.$toString, 1, 'checker toString calls');
+
+  if (typeof Symbol == 'function' && !Symbol.sham) {
+    assert.throws(() => escape(Symbol('thrower')), TypeError, 'throws on symbol');
+  }
+});

tests/unit-pure/esnext.regexp.escape.js

@@ -0,0 +1,26 @@
+import escape from 'core-js-pure/full/regexp/escape';
+import Symbol from 'core-js-pure/es/symbol';
+import { createConversionChecker } from '../helpers/helpers.js';
+
+QUnit.test('RegExp.escape', assert => {
+  assert.isFunction(escape);
+  assert.arity(escape, 1);
+  assert.name(escape, 'escape');
+
+  assert.same(escape('10$'), '\\x310\\$', '10$');
+  assert.same(escape('abcdefg_123456'), 'abcdefg_123456', 'abcdefg_123456');
+  assert.same(
+    escape('(){}[]|,.?*+-^$=<>\\/#&!%:;@~\'"`'),
+    '\\(\\)\\{\\}\\[\\]\\|\\,\\.\\?\\*\\+\\-\\^\\$\\=\\<\\>\\\\\\/\\#\\&\\!\\%\\:\\;\\@\\~\\\'\\"\\`',
+    '(){}[]|,.?*+-^$=<>\\/#&!%:;@~\'"`',
+  );
+
+  const checker = createConversionChecker('10$');
+  assert.same(escape(checker), '\\x310\\$', 'checker result');
+  assert.same(checker.$valueOf, 0, 'checker valueOf calls');
+  assert.same(checker.$toString, 1, 'checker toString calls');
+
+  if (!Symbol.sham) {
+    assert.throws(() => escape(Symbol('thrower')), TypeError, 'throws on symbol');
+  }
+});