Fix: Throw when super in arrow with default / rest

packages/babel-plugin-transform-parameters/package.json

@@ -14,6 +14,7 @@
   },
   "main": "./lib/index.js",
   "dependencies": {
+    "@babel/helper-environment-visitor": "workspace:^",
     "@babel/helper-plugin-utils": "workspace:^"
   },
   "keywords": [

packages/babel-plugin-transform-parameters/src/index.ts

@@ -1,8 +1,25 @@
+import { traverse } from "@babel/core";
+import environmentVisitor from "@babel/helper-environment-visitor";
 import { declare } from "@babel/helper-plugin-utils";
 import convertFunctionParams from "./params";
 import convertFunctionRest from "./rest";
 export { convertFunctionParams };
 
+const checkSuperCallsVisitor = traverse.visitors.merge<{}>([
+  {
+    CallExpression(child) {
+      if (child.get("callee").isSuper()) {
+        // NOTE: this may happen in `@babel/preset-env` with target `since 2017`, or in the default setting of `create-react-app`.
+        throw child.buildCodeFrameError(
+          "It's not possible to compile `super()` in an arrow function with default or rest parameters without compiling classes.\n" +
+            "Please add '@babel/plugin-transform-classes' to your Babel configuration.",
+        );
+      }
+    },
+  },
+  environmentVisitor,
+]);
+
 export interface Options {
   loose?: boolean;
 }
@@ -26,6 +43,8 @@ export default declare((api, options: Options) => {
             .get("params")
             .some(param => param.isRestElement() || param.isAssignmentPattern())
         ) {
+          path.traverse(checkSuperCallsVisitor);
+
           // default/rest visitors require access to `arguments`, so it cannot be an arrow
           path.arrowFunctionToExpression({ noNewArrows });
 

packages/babel-plugin-transform-parameters/test/fixtures/parameters/arrow-default-super-no-classes-plugin/input.js

@@ -0,0 +1,6 @@
+class Bar extends Foo {
+    constructor() {
+        let f = (x = super()) => x;
+        f();
+    }
+}

packages/babel-plugin-transform-parameters/test/fixtures/parameters/arrow-default-super-no-classes-plugin/options.json

@@ -0,0 +1,4 @@
+{
+    "plugins": ["transform-parameters"],
+    "throws": "It's not possible to compile `super()` in an arrow function with default or rest parameters without compiling classes.\nPlease add '@babel/plugin-transform-classes' to your Babel configuration."
+}

packages/babel-plugin-transform-parameters/test/fixtures/parameters/arrow-rest-super-no-classes-plugin/input.js

@@ -0,0 +1,6 @@
+class Bar extends Foo {
+    constructor() {
+        let f = (...args) => super(...args);
+        f();
+    }
+}

packages/babel-plugin-transform-parameters/test/fixtures/parameters/arrow-rest-super-no-classes-plugin/options.json

@@ -0,0 +1,4 @@
+{
+    "plugins": ["transform-parameters"],
+    "throws": "It's not possible to compile `super()` in an arrow function with default or rest parameters without compiling classes.\nPlease add '@babel/plugin-transform-classes' to your Babel configuration."
+}

yarn.lock

@@ -2862,6 +2862,7 @@ __metadata:
   resolution: "@babel/plugin-transform-parameters@workspace:packages/babel-plugin-transform-parameters"
   dependencies:
     "@babel/core": "workspace:^"
+    "@babel/helper-environment-visitor": "workspace:^"
     "@babel/helper-plugin-test-runner": "workspace:^"
     "@babel/helper-plugin-utils": "workspace:^"
   peerDependencies: