first commit

src/main/main.ts

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+/* eslint global-require: off, no-console: off, promise/always-return: off */
+
+/**
+ * This module executes inside of electron's main process. You can start
+ * electron renderer process from here and communicate with the other processes
+ * through IPC.
+ *
+ * When running `npm run build` or `npm run build:main`, this file is compiled to
+ * `./src/main.js` using webpack. This gives us some performance wins.
+ */
+import path from 'path';
+import { app, BrowserWindow, shell, ipcMain } from 'electron';
+import { autoUpdater } from 'electron-updater';
+import log from 'electron-log';
+import MenuBuilder from './menu';
+import { resolveHtmlPath } from './util';
+
+class AppUpdater {
+  constructor() {
+    log.transports.file.level = 'info';
+    autoUpdater.logger = log;
+    autoUpdater.checkForUpdatesAndNotify();
+  }
+}
+
+let mainWindow: BrowserWindow | null = null;
+
+ipcMain.on('ipc-example', async (event, arg) => {
+  const msgTemplate = (pingPong: string) => `IPC test: ${pingPong}`;
+  console.log(msgTemplate(arg));
+  event.reply('ipc-example', msgTemplate('pong'));
+});
+
+if (process.env.NODE_ENV === 'production') {
+  const sourceMapSupport = require('source-map-support');
+  sourceMapSupport.install();
+}
+
+const isDebug =
+  process.env.NODE_ENV === 'development' || process.env.DEBUG_PROD === 'true';
+
+if (isDebug) {
+  require('electron-debug').default();
+}
+
+const installExtensions = async () => {
+  const installer = require('electron-devtools-installer');
+  const forceDownload = !!process.env.UPGRADE_EXTENSIONS;
+  const extensions = ['REACT_DEVELOPER_TOOLS'];
+
+  return installer
+    .default(
+      extensions.map((name) => installer[name]),
+      forceDownload,
+    )
+    .catch(console.log);
+};
+
+const createWindow = async () => {
+  if (isDebug) {
+    await installExtensions();
+  }
+
+  const RESOURCES_PATH = app.isPackaged
+    ? path.join(process.resourcesPath, 'assets')
+    : path.join(__dirname, '../../assets');
+
+  const getAssetPath = (...paths: string[]): string => {
+    return path.join(RESOURCES_PATH, ...paths);
+  };
+
+  mainWindow = new BrowserWindow({
+    show: false,
+    width: 1024,
+    height: 728,
+    icon: getAssetPath('icon.png'),
+    webPreferences: {
+      preload: app.isPackaged
+        ? path.join(__dirname, 'preload.js')
+        : path.join(__dirname, '../../.erb/dll/preload.js'),
+    },
+  });
+
+  mainWindow.loadURL(resolveHtmlPath('index.html'));
+
+  mainWindow.on('ready-to-show', () => {
+    if (!mainWindow) {
+      throw new Error('"mainWindow" is not defined');
+    }
+    if (process.env.START_MINIMIZED) {
+      mainWindow.minimize();
+    } else {
+      mainWindow.show();
+    }
+  });
+
+  mainWindow.on('closed', () => {
+    mainWindow = null;
+  });
+
+  const menuBuilder = new MenuBuilder(mainWindow);
+  menuBuilder.buildMenu();
+
+  // Open urls in the user's browser
+  mainWindow.webContents.setWindowOpenHandler((edata) => {
+    shell.openExternal(edata.url);
+    return { action: 'deny' };
+  });
+
+  // Remove this if your app does not use auto updates
+  // eslint-disable-next-line
+  new AppUpdater();
+};
+
+/**
+ * Add event listeners...
+ */
+
+app.on('window-all-closed', () => {
+  // Respect the OSX convention of having the application in memory even
+  // after all windows have been closed
+  if (process.platform !== 'darwin') {
+    app.quit();
+  }
+});
+
+app
+  .whenReady()
+  .then(() => {
+    createWindow();
+    app.on('activate', () => {
+      // On macOS it's common to re-create a window in the app when the
+      // dock icon is clicked and there are no other windows open.
+      if (mainWindow === null) createWindow();
+    });
+  })
+  .catch(console.log);