Add transform support for the "regexp unicode sets" proposal

packages/babel-core/src/parser/util/missing-plugin-helper.ts

@@ -201,6 +201,16 @@ const pluginNameMap = {
       url: "https://git.io/JvKp3",
     },
   },
+  regexpUnicodeSets: {
+    syntax: {
+      name: "@babel/plugin-syntax-unicode-sets-regex",
+      url: "https://git.io/J9GTd",
+    },
+    transform: {
+      name: "@babel/plugin-proposal-unicode-sets-regex",
+      url: "https://git.io/J9GTQ",
+    },
+  },
   throwExpressions: {
     syntax: {
       name: "@babel/plugin-syntax-throw-expressions",

packages/babel-helper-create-regexp-features-plugin/src/features.ts

@@ -3,6 +3,8 @@ export const FEATURES = Object.freeze({
   dotAllFlag: 1 << 1,
   unicodePropertyEscape: 1 << 2,
   namedCaptureGroups: 1 << 3,
+  unicodeSetsFlag_syntax: 1 << 4,
+  unicodeSetsFlag: 1 << 5,
 });
 
 // We can't use a symbol because this needs to always be the same, even if

packages/babel-helper-create-regexp-features-plugin/src/index.ts

@@ -20,9 +20,13 @@ export function createRegExpFeaturePlugin({
   name,
   feature,
   options = {} as any,
+  manipulateOptions = (() => {}) as (opts: any, parserOpts: any) => void,
 }) {
   return {
     name,
+
+    manipulateOptions,
+
     pre() {
       const { file } = this;
       const features = file.get(featuresKey) ?? 0;

packages/babel-helper-create-regexp-features-plugin/src/util.ts

@@ -3,22 +3,30 @@ import { FEATURES, hasFeature } from "./features";
 
 type RegexpuOptions = {
   unicodeFlag: "transform" | false;
+  unicodeSetsFlag: "transform" | "parse" | false;
   dotAllFlag: "transform" | false;
   unicodePropertyEscapes: "transform" | false;
   namedGroups: "transform" | false;
   onNamedGroup: (name: string, index: number) => void;
 };
 
+type Stable = 0;
+
 export function generateRegexpuOptions(toTransform: number): RegexpuOptions {
-  const feat = (name: keyof typeof FEATURES) => {
-    return hasFeature(toTransform, FEATURES[name]) ? "transform" : false;
+  const feat = <IsStable extends 0 | 1>(
+    name: keyof typeof FEATURES,
+    ok: "transform" | (IsStable extends Stable ? never : "parse") = "transform",
+  ) => {
+    return hasFeature(toTransform, FEATURES[name]) ? ok : false;
   };
 
   return {
-    unicodeFlag: feat("unicodeFlag"),
-    dotAllFlag: feat("dotAllFlag"),
-    unicodePropertyEscapes: feat("unicodePropertyEscape"),
-    namedGroups: feat("namedCaptureGroups"),
+    unicodeFlag: feat<Stable>("unicodeFlag"),
+    unicodeSetsFlag:
+      feat("unicodeSetsFlag") || feat("unicodeSetsFlag_syntax", "parse"),
+    dotAllFlag: feat<Stable>("dotAllFlag"),
+    unicodePropertyEscapes: feat<Stable>("unicodePropertyEscape"),
+    namedGroups: feat<Stable>("namedCaptureGroups"),
     onNamedGroup: () => {},
   };
 }
@@ -29,6 +37,10 @@ export function canSkipRegexpu(
 ): boolean {
   const { flags, pattern } = node;
 
+  if (flags.includes("v")) {
+    if (options.unicodeSetsFlag === "transform") return false;
+  }
+
   if (flags.includes("u")) {
     if (options.unicodeFlag === "transform") return false;
     if (
@@ -51,6 +63,9 @@ export function canSkipRegexpu(
 }
 
 export function transformFlags(regexpuOptions: RegexpuOptions, flags: string) {
+  if (regexpuOptions.unicodeSetsFlag === "transform") {
+    flags = flags.replace("v", "u");
+  }
   if (regexpuOptions.unicodeFlag === "transform") {
     flags = flags.replace("u", "");
   }

packages/babel-plugin-proposal-unicode-sets-regex/.npmignore

@@ -0,0 +1,3 @@
+src
+test
+*.log

packages/babel-plugin-proposal-unicode-sets-regex/README.md

@@ -0,0 +1,19 @@
+# @babel/plugin-proposal-unicode-sets-regex
+
+> Compile regular expressions' unicodeSets (v) flag.
+
+See our website [@babel/plugin-proposal-unicode-sets-regex](https://babeljs.io/docs/en/babel-plugin-proposal-unicode-sets-regex) for more information.
+
+## Install
+
+Using npm:
+
+```sh
+npm install --save-dev @babel/plugin-proposal-unicode-sets-regex
+```
+
+or using yarn:
+
+```sh
+yarn add @babel/plugin-proposal-unicode-sets-regex --dev
+```

packages/babel-plugin-proposal-unicode-sets-regex/package.json

@@ -0,0 +1,48 @@
+{
+  "name": "@babel/plugin-proposal-unicode-sets-regex",
+  "version": "7.16.7",
+  "description": "Compile regular expressions' unicodeSets (v) flag.",
+  "homepage": "https://babel.dev/docs/en/next/babel-plugin-proposal-unicode-sets-regex",
+  "license": "MIT",
+  "publishConfig": {
+    "access": "public"
+  },
+  "main": "./lib/index.js",
+  "keywords": [
+    "babel-plugin",
+    "regex",
+    "regexp",
+    "unicode",
+    "sets",
+    "properties",
+    "property",
+    "string",
+    "strings",
+    "regular expressions"
+  ],
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/babel/babel.git",
+    "directory": "packages/babel-plugin-proposal-unicode-sets-regex"
+  },
+  "bugs": "https://github.com/babel/babel/issues",
+  "dependencies": {
+    "@babel/helper-create-regexp-features-plugin": "workspace:^",
+    "@babel/helper-plugin-utils": "workspace:^"
+  },
+  "peerDependencies": {
+    "@babel/core": "^7.0.0"
+  },
+  "devDependencies": {
+    "@babel/core": "workspace:^",
+    "@babel/helper-plugin-test-runner": "workspace:^"
+  },
+  "author": "The Babel Team (https://babel.dev/team)",
+  "exports": {
+    ".": "./lib/index.js",
+    "./package.json": "./package.json"
+  },
+  "engines": {
+    "node": ">=6.9.0"
+  }
+}

packages/babel-plugin-proposal-unicode-sets-regex/src/index.ts

@@ -0,0 +1,15 @@
+/* eslint-disable @babel/development/plugin-name */
+import { createRegExpFeaturePlugin } from "@babel/helper-create-regexp-features-plugin";
+import { declare } from "@babel/helper-plugin-utils";
+
+export default declare(api => {
+  api.assertVersion(7);
+
+  return createRegExpFeaturePlugin({
+    name: "transform-unicode-sets-regex",
+    feature: "unicodeSetsFlag",
+    manipulateOptions(opts, parserOpts) {
+      parserOpts.plugins.push("regexpUnicodeSets");
+    },
+  });
+});

packages/babel-plugin-proposal-unicode-sets-regex/test/fixtures/basic/basic/input.js

@@ -0,0 +1 @@
+/[[0-7]&&[5-9]]\u{10FFFF}/v;

packages/babel-plugin-proposal-unicode-sets-regex/test/fixtures/basic/basic/options.json

@@ -0,0 +1,3 @@
+{
+  "plugins": ["proposal-unicode-sets-regex"]
+}

packages/babel-plugin-proposal-unicode-sets-regex/test/fixtures/basic/basic/output.js

@@ -0,0 +1 @@
+/[5-7]\u{10FFFF}/u;

packages/babel-plugin-proposal-unicode-sets-regex/test/fixtures/basic/transform-u/input.js

@@ -0,0 +1 @@
+/[[0-7]&&[5-9]]\u{10FFFF}/v;

packages/babel-plugin-proposal-unicode-sets-regex/test/fixtures/basic/transform-u/options.json

@@ -0,0 +1,3 @@
+{
+  "plugins": ["proposal-unicode-sets-regex", "transform-unicode-regex"]
+}

packages/babel-plugin-proposal-unicode-sets-regex/test/fixtures/basic/transform-u/output.js

@@ -0,0 +1 @@
+/[5-7](?:\uDBFF\uDFFF)/;

packages/babel-plugin-proposal-unicode-sets-regex/test/index.js

@@ -0,0 +1,3 @@
+import runner from "@babel/helper-plugin-test-runner";
+
+runner(import.meta.url);

packages/babel-plugin-proposal-unicode-sets-regex/test/package.json

@@ -0,0 +1 @@
+{ "type": "module" }

packages/babel-plugin-syntax-unicode-sets-regex/.npmignore

@@ -0,0 +1,3 @@
+src
+test
+*.log

packages/babel-plugin-syntax-unicode-sets-regex/README.md

@@ -0,0 +1,19 @@
+# @babel/plugin-syntax-unicode-sets-regex
+
+> Parse regular expressions' unicodeSets (v) flag.
+
+See our website [@babel/plugin-syntax-unicode-sets-regex](https://babeljs.io/docs/en/babel-plugin-syntax-unicode-sets-regex) for more information.
+
+## Install
+
+Using npm:
+
+```sh
+npm install --save-dev @babel/plugin-syntax-unicode-sets-regex
+```
+
+or using yarn:
+
+```sh
+yarn add @babel/plugin-syntax-unicode-sets-regex --dev
+```

packages/babel-plugin-syntax-unicode-sets-regex/package.json

@@ -0,0 +1,48 @@
+{
+  "name": "@babel/plugin-syntax-unicode-sets-regex",
+  "version": "7.16.7",
+  "description": "Parse regular expressions' unicodeSets (v) flag.",
+  "homepage": "https://babel.dev/docs/en/next/babel-plugin-syntax-unicode-sets-regex",
+  "license": "MIT",
+  "publishConfig": {
+    "access": "public"
+  },
+  "main": "./lib/index.js",
+  "keywords": [
+    "babel-plugin",
+    "regex",
+    "regexp",
+    "unicode",
+    "sets",
+    "properties",
+    "property",
+    "string",
+    "strings",
+    "regular expressions"
+  ],
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/babel/babel.git",
+    "directory": "packages/babel-plugin-syntax-unicode-sets-regex"
+  },
+  "bugs": "https://github.com/babel/babel/issues",
+  "dependencies": {
+    "@babel/helper-create-regexp-features-plugin": "workspace:^",
+    "@babel/helper-plugin-utils": "workspace:^"
+  },
+  "peerDependencies": {
+    "@babel/core": "^7.0.0"
+  },
+  "devDependencies": {
+    "@babel/core": "workspace:^",
+    "@babel/helper-plugin-test-runner": "workspace:^"
+  },
+  "author": "The Babel Team (https://babel.dev/team)",
+  "exports": {
+    ".": "./lib/index.js",
+    "./package.json": "./package.json"
+  },
+  "engines": {
+    "node": ">=6.9.0"
+  }
+}

packages/babel-plugin-syntax-unicode-sets-regex/src/index.ts

@@ -0,0 +1,15 @@
+/* eslint-disable @babel/development/plugin-name */
+import { createRegExpFeaturePlugin } from "@babel/helper-create-regexp-features-plugin";
+import { declare } from "@babel/helper-plugin-utils";
+
+export default declare(api => {
+  api.assertVersion(7);
+
+  return createRegExpFeaturePlugin({
+    name: "syntax-unicode-sets-regex",
+    feature: "unicodeSetsFlag_syntax",
+    manipulateOptions(opts, parserOpts) {
+      parserOpts.plugins.push("regexpUnicodeSets");
+    },
+  });
+});

packages/babel-plugin-syntax-unicode-sets-regex/test/fixtures/plugin-enabled/basic/input.js

@@ -0,0 +1 @@
+/[[0-7]&&[5-9]]/v;

packages/babel-plugin-syntax-unicode-sets-regex/test/fixtures/plugin-enabled/basic/options.json

@@ -0,0 +1,3 @@
+{
+  "plugins": ["syntax-unicode-sets-regex"]
+}

packages/babel-plugin-syntax-unicode-sets-regex/test/fixtures/plugin-enabled/basic/output.js

@@ -0,0 +1 @@
+/[[0-7]&&[5-9]]/v;

packages/babel-plugin-syntax-unicode-sets-regex/test/fixtures/plugin-missing/basic/input.js

@@ -0,0 +1 @@
+/[[0-7]&&[5-9]]/v;

packages/babel-plugin-syntax-unicode-sets-regex/test/fixtures/plugin-missing/basic/options.json

@@ -0,0 +1,3 @@
+{
+  "throws": "Support for the experimental syntax 'regexpUnicodeSets' isn't currently enabled"
+}

packages/babel-plugin-syntax-unicode-sets-regex/test/fixtures/plugin-missing/other-enabled/input.js

@@ -0,0 +1 @@
+/[[0-7]&&[5-9]](?<n>.)/v;

packages/babel-plugin-syntax-unicode-sets-regex/test/fixtures/plugin-missing/other-enabled/options.json

@@ -0,0 +1,4 @@
+{
+  "plugins": ["transform-named-capturing-groups-regex"],
+  "throws": "Support for the experimental syntax 'regexpUnicodeSets' isn't currently enabled"
+}

packages/babel-plugin-syntax-unicode-sets-regex/test/index.js

@@ -0,0 +1,3 @@
+import runner from "@babel/helper-plugin-test-runner";
+
+runner(import.meta.url);

packages/babel-plugin-syntax-unicode-sets-regex/test/package.json

@@ -0,0 +1 @@
+{ "type": "module" }

tsconfig.json

@@ -63,6 +63,7 @@
     "./packages/babel-plugin-proposal-record-and-tuple/src/**/*.ts",
     "./packages/babel-plugin-proposal-throw-expressions/src/**/*.ts",
     "./packages/babel-plugin-proposal-unicode-property-regex/src/**/*.ts",
+    "./packages/babel-plugin-proposal-unicode-sets-regex/src/**/*.ts",
     "./packages/babel-plugin-syntax-async-do-expressions/src/**/*.ts",
     "./packages/babel-plugin-syntax-decimal/src/**/*.ts",
     "./packages/babel-plugin-syntax-decorators/src/**/*.ts",
@@ -79,6 +80,7 @@
     "./packages/babel-plugin-syntax-record-and-tuple/src/**/*.ts",
     "./packages/babel-plugin-syntax-throw-expressions/src/**/*.ts",
     "./packages/babel-plugin-syntax-typescript/src/**/*.ts",
+    "./packages/babel-plugin-syntax-unicode-sets-regex/src/**/*.ts",
     "./packages/babel-plugin-transform-arrow-functions/src/**/*.ts",
     "./packages/babel-plugin-transform-async-to-generator/src/**/*.ts",
     "./packages/babel-plugin-transform-block-scoped-functions/src/**/*.ts",
@@ -331,6 +333,9 @@
       "@babel/plugin-proposal-unicode-property-regex": [
         "./packages/babel-plugin-proposal-unicode-property-regex/src"
       ],
+      "@babel/plugin-proposal-unicode-sets-regex": [
+        "./packages/babel-plugin-proposal-unicode-sets-regex/src"
+      ],
       "@babel/plugin-syntax-async-do-expressions": [
         "./packages/babel-plugin-syntax-async-do-expressions/src"
       ],
@@ -379,6 +384,9 @@
       "@babel/plugin-syntax-typescript": [
         "./packages/babel-plugin-syntax-typescript/src"
       ],
+      "@babel/plugin-syntax-unicode-sets-regex": [
+        "./packages/babel-plugin-syntax-unicode-sets-regex/src"
+      ],
       "@babel/plugin-transform-arrow-functions": [
         "./packages/babel-plugin-transform-arrow-functions/src"
       ],