Avoid use of null when accessing electron.remote.

Signed-off-by: Anders Kaseorg <anders@zulip.com>

app/common/config-util.ts

@@ -7,24 +7,14 @@ import {JsonDB} from "node-json-db";
 import * as EnterpriseUtil from "./enterprise-util";
 import Logger from "./logger-util";
 
+/* To make the util runnable in both main and renderer process */
+const {app, dialog} = process.type === "renderer" ? electron.remote : electron;
+
 const logger = new Logger({
   file: "config-util.log",
   timestamp: true,
 });
 
-let dialog: Electron.Dialog = null;
-let app: Electron.App = null;
-
-/* To make the util runnable in both main and renderer process */
-if (process.type === "renderer") {
-  const {remote} = electron;
-  dialog = remote.dialog;
-  app = remote.app;
-} else {
-  dialog = electron.dialog;
-  app = electron.app;
-}
-
 let db: JsonDB;
 
 reloadDB();

app/common/default-util.ts

@@ -1,7 +1,8 @@
 import electron from "electron";
 import fs from "fs";
 
-const app = process.type === "renderer" ? electron.remote.app : electron.app;
+const {app} = process.type === "renderer" ? electron.remote : electron;
+
 let setupCompleted = false;
 
 const zulipDir = app.getPath("userData");

app/common/logger-util.ts

@@ -6,6 +6,8 @@ import os from "os";
 import {initSetUp} from "./default-util";
 import {sentryInit, captureException} from "./sentry-util";
 
+const {app} = process.type === "renderer" ? electron.remote : electron;
+
 interface LoggerOptions {
   timestamp?: true | (() => string);
   file?: string;
@@ -15,11 +17,8 @@ interface LoggerOptions {
 
 initSetUp();
 
-let app: Electron.App = null;
 let reportErrors = true;
 if (process.type === "renderer") {
-  app = electron.remote.app;
-
   // Report Errors to Sentry only if it is enabled in settings
   // Gets the value of reportErrors from config-util for renderer process
   // For main process, sentryInit() is handled in index.js
@@ -34,8 +33,6 @@ if (process.type === "renderer") {
       }
     },
   );
-} else {
-  app = electron.app;
 }
 
 const logDir = `${app.getPath("userData")}/Logs`;