main.js

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

let win;

function createWindow() {
  win = new BrowserWindow({ width: 1000, height: 600 });

  // Specify entry point
  process.env.PACKAGE = false;
  process.env.host = "http://localhost:4200";

  // load the dist folder from Angular
  if (process.env.PACKAGE === "true") {
    win.loadURL(
      url.format({
        pathname: path.join(__dirname, "/dist/turing-machine/index.html"),
        protocol: "file:",
        slashes: true,
      }),
    );
  } else {
    win.loadURL(process.env.HOST);
    win.webContents.openDevTools();
  }

  // The following is optional and will open the DevTools:
  // win.webContents.openDevTools()

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

app.on("ready", createWindow);

// on macOS, closing the window doesn't quit the app
app.on("window-all-closed", () => {
  if (process.platform !== "darwin") {
    app.quit();
  }
});

// initialize the app's main window
app.on("activate", () => {
  if (win === null) {
    createWindow();
  }
});