refactor: Use invoke for ipc to list hashtags

src/main/index.ts

@@ -994,16 +994,10 @@ ipcMain.handle('save-hashtag', async (_: IpcMainInvokeEvent, tag: string) => {
   await hashtags.insertTag(tag)
 })
 
-ipcMain.on('list-hashtags', (event: IpcMainEvent) => {
+ipcMain.handle('list-hashtags', async (_: IpcMainInvokeEvent) => {
   const hashtags = new Hashtags(hashtagsDB)
-  hashtags
-    .listTags()
-    .then(tags => {
-      event.sender.send('response-list-hashtags', tags)
-    })
-    .catch(err => {
-      event.sender.send('error-list-hashtags', err)
-    })
+  const tags = await hashtags.listTags()
+  return tags
 })
 
 ipcMain.on('remove-hashtag', (event: IpcMainEvent, tag: LocalTag) => {

src/renderer/store/TimelineSpace/Contents/Hashtag/List.ts

@@ -24,19 +24,10 @@ const mutations: MutationTree<ListState> = {
 }
 
 const actions: ActionTree<ListState, RootState> = {
-  listTags: ({ commit }) => {
-    return new Promise((resolve, reject) => {
-      win.ipcRenderer.once('response-list-hashtags', (_, tags: Array<LocalTag>) => {
-        win.ipcRenderer.removeAllListeners('error-list-hashtags')
+  listTags: async ({ commit }) => {
+    const tags: Array<LocalTag> = await win.ipcRenderer.invoke('list-hashtags')
     commit(MUTATION_TYPES.UPDATE_TAGS, tags)
-        resolve(tags)
-      })
-      win.ipcRenderer.once('error-list-hashtags', (_, err: Error) => {
-        win.ipcRenderer.removeAllListeners('response-list-hashtags')
-        reject(err)
-      })
-      win.ipcRenderer.send('list-hashtags')
-    })
+    return tags
   },
   removeTag: ({ dispatch }, tag: LocalTag) => {
     return new Promise((resolve, reject) => {

src/renderer/store/TimelineSpace/SideMenu.ts

@@ -149,19 +149,10 @@ const actions: ActionTree<SideMenuState, RootState> = {
     commit(MUTATION_TYPES.CHANGE_COLLAPSE, value)
     return value
   },
-  listTags: ({ commit }) => {
-    return new Promise((resolve, reject) => {
-      win.ipcRenderer.once('response-list-hashtags', (_, tags: Array<LocalTag>) => {
-        win.ipcRenderer.removeAllListeners('error-list-hashtags')
+  listTags: async ({ commit }) => {
+    const tags: Array<LocalTag> = await win.ipcRenderer.invoke('list-hashtags')
     commit(MUTATION_TYPES.UPDATE_TAGS, tags)
-        resolve(tags)
-      })
-      win.ipcRenderer.once('error-list-hashtags', (_, err: Error) => {
-        win.ipcRenderer.removeAllListeners('response-list-hashtags')
-        reject(err)
-      })
-      win.ipcRenderer.send('list-hashtags')
-    })
+    return tags
   }
 }