# Synopsis > How to use Node.js and Electron APIs. All of [Node.js's built-in modules](https://nodejs.org/api/) are available in Electron and third-party node modules also fully supported as well (including the [native modules](../tutorial/using-native-node-modules.md)). Electron also provides some extra built-in modules for developing native desktop applications. Some modules are only available in the main process, some are only available in the renderer process (web page), and some can be used in either process type. The basic rule is: if a module is [GUI][gui] or low-level system related, then it should be only available in the main process. You need to be familiar with the concept of [main process vs. renderer process](../tutorial/application-architecture.md#main-and-renderer-processes) scripts to be able to use those modules. The main process script is like a normal Node.js script: ```javascript const { app, BrowserWindow } = require('electron') let win = null app.whenReady().then(() => { win = new BrowserWindow({ width: 800, height: 600 }) win.loadURL('https://github.com') }) ``` The renderer process is no different than a normal web page, except for the extra ability to use node modules if `nodeIntegration` is enabled: ```html ``` To run your app, read [Run your app](../tutorial/first-app.md#running-your-app). ## Destructuring assignment As of 0.37, you can use [destructuring assignment][destructuring-assignment] to make it easier to use built-in modules. ```javascript const { app, BrowserWindow } = require('electron') let win app.whenReady().then(() => { win = new BrowserWindow() win.loadURL('https://github.com') }) ``` If you need the entire `electron` module, you can require it and then using destructuring to access the individual modules from `electron`. ```javascript const electron = require('electron') const { app, BrowserWindow } = electron let win app.whenReady().then(() => { win = new BrowserWindow() win.loadURL('https://github.com') }) ``` This is equivalent to the following code: ```javascript const electron = require('electron') const app = electron.app const BrowserWindow = electron.BrowserWindow let win app.whenReady().then(() => { win = new BrowserWindow() win.loadURL('https://github.com') }) ``` [gui]: https://en.wikipedia.org/wiki/Graphical_user_interface [destructuring-assignment]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/Destructuring_assignment