app: fix #218 and keep dock open on install

app/src/index.ts

@@ -36,6 +36,7 @@ app.on('ready', () => {
   const gotTheLock = app.requestSingleInstanceLock()
   if (!gotTheLock) {
     app.exit(0)
+    return
   }
 
   app.on('second-instance', () => {
@@ -56,10 +57,6 @@ app.on('ready', () => {
   init()
 })
 
-if (process.platform === 'darwin') {
-  app.dock.hide()
-}
-
 function firstRunWindow() {
   // Create the browser window.
   welcomeWindow = new BrowserWindow({
@@ -198,6 +195,10 @@ function init() {
   server()
 
   if (store.get('first-time-run') && installed()) {
+    if (process.platform === 'darwin') {
+      app.dock.hide()
+    }
+
     app.setLoginItemSettings({ openAtLogin: app.getLoginItemSettings().openAtLogin })
     return
   }