Electron basic config

electron.js

const electron = require("electron");
const { app, BrowserWindow } = electron;

const path = require("path");
const url = require("url");
const isDev = require("electron-is-dev");

let mainWindow;

const localUrl = "http://localhost:3000";

function createWindow() {
  mainWindow = new BrowserWindow({
    width: 760,
    minWidth: 700,
    minHeight: 620,
    height: 620,
    webPreferences: { nodeIntegration: true }
  });

  if (isDev) {
    mainWindow.loadURL(localUrl);
    mainWindow.webContents.openDevTools();
  } else {
    mainWindow.loadURL(
      url.format({
        pathname: path.join(__dirname, "../build/index.html"),
        protocol: "file:",
        slashes: true
      })
    );
  }

  mainWindow.on("closed", () => (mainWindow = null));
}

app.on("ready", createWindow);

app.on("window-all-closed", () => {
  if (process.platform !== "darwin") {
    app.quit();
  }
});

app.on("activate", () => {
  if (mainWindow === null) {
    createWindow();
  }
});