1 files changed, 10 insertions, 4 deletions
diff --git a/src/background/usecases/FindUseCase.ts b/src/background/usecases/FindUseCase.ts
index 224e4a9..d567800 100644
--- a/src/background/usecases/FindUseCase.ts
+++ b/src/background/usecases/FindUseCase.ts
@@ -3,22 +3,28 @@ import TabPresenter from '../presenters/TabPresenter';
 import ConsoleClient from '../infrastructures/ConsoleClient';
 
 export default class FindUseCase {
+  private tabPresenter: TabPresenter;
+
+  private findRepository: FindRepository;
+
+  private consoleClient: ConsoleClient;
+
   constructor() {
     this.tabPresenter = new TabPresenter();
     this.findRepository = new FindRepository();
     this.consoleClient = new ConsoleClient();
   }
 
-  getKeyword() {
+  getKeyword(): Promise<string> {
     return this.findRepository.getKeyword();
   }
 
-  setKeyword(keyword) {
+  setKeyword(keyword: string): Promise<any> {
     return this.findRepository.setKeyword(keyword);
   }
 
-  async findStart() {
+  async findStart(): Promise<any> {
     let tab = await this.tabPresenter.getCurrent();
-    return this.consoleClient.showFind(tab.id);
+    return this.consoleClient.showFind(tab.id as number);
   }
 }