Migrate app to TypeScript (#1637)

* Initial setup and migrated src/common

* WIP

* WIP

* WIP

* Main module basically finished

* Renderer process migrated

* Added CI step and some fixes

* Fixed remainder of issues and added proper ESLint config

* Fixed a couple issues

* Progress!

* Some more fixes

* Fixed a test

* Fix build step

* PR feedback

src/main/windows/settingsWindow.ts

@@ -0,0 +1,42 @@
+// Copyright (c) 2016-present Mattermost, Inc. All Rights Reserved.
+// See LICENSE.txt for license information.
+
+import {BrowserWindow} from 'electron';
+import log from 'electron-log';
+import {CombinedConfig} from 'types/config';
+
+import ContextMenu from '../contextMenu';
+import {getLocalPreload, getLocalURLString} from '../utils';
+
+export function createSettingsWindow(mainWindow: BrowserWindow, config: CombinedConfig, withDevTools: boolean) {
+    const preload = getLocalPreload('mainWindow.js');
+    const spellcheck = (typeof config.useSpellChecker === 'undefined' ? true : config.useSpellChecker);
+    const settingsWindow = new BrowserWindow({
+        parent: mainWindow,
+        title: 'Desktop App Settings',
+        fullscreen: false,
+        webPreferences: {
+            nodeIntegration: false,
+            contextIsolation: true,
+            preload,
+            spellcheck,
+            enableRemoteModule: process.env.NODE_ENV === 'test',
+        }});
+
+    const contextMenu = new ContextMenu({}, settingsWindow);
+    contextMenu.reload();
+
+    const localURL = getLocalURLString('settings.html');
+    settingsWindow.setMenuBarVisibility(false);
+    settingsWindow.loadURL(localURL).catch(
+        (reason) => {
+            log.error(`Settings window failed to load: ${reason}`);
+            log.info(process.env);
+        });
+    settingsWindow.show();
+
+    if (withDevTools) {
+        settingsWindow.webContents.openDevTools({mode: 'detach'});
+    }
+    return settingsWindow;
+}