Rename .js/.jsx to .ts/.tsx

src/background/controllers/FindController.ts

@@ -0,0 +1,15 @@
+import FindUseCase from '../usecases/FindUseCase';
+
+export default class FindController {
+  constructor() {
+    this.findUseCase = new FindUseCase();
+  }
+
+  getKeyword() {
+    return this.findUseCase.getKeyword();
+  }
+
+  setKeyword(keyword) {
+    return this.findUseCase.setKeyword(keyword);
+  }
+}