Merge multiple regex transform plugin (#10447)

* feat: implement create-regexp-features-plugin

* fix: test input is not effective

* refactor: leverage create-regexp-features-plugin

* test: add more test cases

* test: update test fixture

* chore: add type annotation to features

* test: add regression test for issue 9892

* add regression test for issue 9199

* address review comments from Nicolò

* address review comments from Brian

* small tweaks

* Enable dotAllFlag when flags includes u

packages/babel-plugin-transform-unicode-regex/package.json

@@ -12,9 +12,8 @@
     "babel-plugin"
   ],
   "dependencies": {
-    "@babel/helper-plugin-utils": "^7.0.0",
-    "@babel/helper-regex": "^7.4.4",
-    "regexpu-core": "^4.6.0"
+    "@babel/helper-create-regexp-features-plugin": "^7.6.0",
+    "@babel/helper-plugin-utils": "^7.0.0"
   },
   "peerDependencies": {
     "@babel/core": "^7.0.0-0"

packages/babel-plugin-transform-unicode-regex/src/index.js

@@ -1,19 +1,12 @@
+/* eslint-disable @babel/development/plugin-name */
+import { createRegExpFeaturePlugin } from "@babel/helper-create-regexp-features-plugin";
 import { declare } from "@babel/helper-plugin-utils";
-import rewritePattern from "regexpu-core";
-import * as regex from "@babel/helper-regex";
 
 export default declare(api => {
   api.assertVersion(7);
 
-  return {
+  return createRegExpFeaturePlugin({
     name: "transform-unicode-regex",
-
-    visitor: {
-      RegExpLiteral({ node }) {
-        if (!regex.is(node, "u")) return;
-        node.pattern = rewritePattern(node.pattern, node.flags);
-        regex.pullFlag(node, "u");
-      },
-    },
-  };
+    feature: "unicodeFlag",
+  });
 });