feat: rom extension format

examples/web/index.ts

@@ -338,7 +338,6 @@ class GameboyEmulator extends EmulatorBase implements Emulator {
         this.trigger("booted");
     }
 
-    // @todo remove this method, or at least most of it
     async register() {
         await Promise.all([this.registerKeys()]);
     }
@@ -410,6 +409,10 @@ class GameboyEmulator extends EmulatorBase implements Emulator {
         return "https://gitlab.stage.hive.pt/joamag/boytacean/-/blob/master/CHANGELOG.md";
     }
 
+    get romExts(): string[] {
+        return ["gb"];
+    }
+
     get pixelFormat(): PixelFormat {
         return PixelFormat.RGB;
     }

examples/web/react/app.tsx

@@ -130,6 +130,12 @@ export interface Emulator extends ObservableI {
      */
     get engine(): string | null;
 
+    /**
+     * The complete set of file extensions that this emulator
+     * supports.
+     */
+    get romExts(): string[];
+
     /**
      * The pixel format of the emulator's display
      * image buffer (eg: RGB).
@@ -363,9 +369,8 @@ export const App: FC<AppProps> = ({
     };
 
     const onFile = async (file: File) => {
-        // @todo must make this more flexible and not just
-        // Game Boy only (using the emulator interface)
-        if (!file.name.endsWith(".gb")) {
+        const fileExtension = file.name.split(".").pop() ?? "";
+        if (!emulator.romExts.includes(fileExtension)) {
             showToast(
                 `This is probably not a ${emulator.device} ROM file!`,
                 true