Types on src/background

1 files changed, 7 insertions, 3 deletions

diff --git a/src/background/usecases/VersionUseCase.ts b/src/background/usecases/VersionUseCase.ts
index ed5112b..207f9e2 100644
--- a/src/background/usecases/VersionUseCase.ts
+++ b/src/background/usecases/VersionUseCase.ts
@@ -3,21 +3,25 @@ import TabPresenter from '../presenters/TabPresenter';
 import NotifyPresenter from '../presenters/NotifyPresenter';
 
 export default class VersionUseCase {
+  private tabPresenter: TabPresenter;
+
+  private notifyPresenter: NotifyPresenter;
+
   constructor() {
     this.tabPresenter = new TabPresenter();
     this.notifyPresenter = new NotifyPresenter();
   }
 
-  notify() {
+  notify(): Promise<string> {
     let title = `Vim Vixen ${manifest.version} has been installed`;
     let message = 'Click here to see release notes';
     let url = this.releaseNoteUrl(manifest.version);
-    this.notifyPresenter.notify(title, message, () => {
+    return this.notifyPresenter.notify(title, message, () => {
       this.tabPresenter.create(url);
     });
   }
 
-  releaseNoteUrl(version) {
+  releaseNoteUrl(version?: string): string {
     if (version) {
       return `https://github.com/ueokande/vim-vixen/releases/tag/${version}`;
     }