Support .mjs

Author: inokawa

README.md

@@ -22,7 +22,7 @@ The communication between React app and React Native app will be also simplified
 ## Features
 
 - Create React app bundle for WebView automatically in build process of React Native
-  - `.js`, `.ts`, `.jsx`, `.tsx` will be packed into one source.
+  - `.js`, `.ts`, `.jsx`, `.tsx` and `.mjs` will be packed into one source.
   - NOTE: Only the edits in the entry file of web will invoke rebuild because of the limitation of [metro](https://github.com/facebook/metro)'s build process.
 - Handle communication between React Native and WebView with React hook style
   - With `useBridge` hook, you can subscribe messages from WebView.

src/plugin/metro.js

@@ -1,7 +1,7 @@
 import Metro from "metro";
 
 const babelTransformerPath = require.resolve("./transformer");
-const codeExts = ["js", "ts", "jsx", "tsx"];
+const codeExts = ["js", "ts", "jsx", "tsx", "mjs"];
 const htmlExts = ["htm", "html", "css"];
 const imageExts = ["bmp", "gif", "png", "jpg", "jpeg", "webp", "svg"];
 const textExts = ["txt", "md"];