Types on src/background

src/background/repositories/FindRepository.ts

@@ -3,15 +3,17 @@ import MemoryStorage from '../infrastructures/MemoryStorage';
 const FIND_KEYWORD_KEY = 'find-keyword';
 
 export default class FindRepository {
+  private cache: MemoryStorage;
+
   constructor() {
     this.cache = new MemoryStorage();
   }
 
-  getKeyword() {
+  getKeyword(): Promise<string> {
     return Promise.resolve(this.cache.get(FIND_KEYWORD_KEY));
   }
 
-  setKeyword(keyword) {
+  setKeyword(keyword: string): Promise<any> {
     this.cache.set(FIND_KEYWORD_KEY, keyword);
     return Promise.resolve();
   }