# NPM tool window > **TL;DR** > `Context menu of a package.json | Show npm Scripts` > > > > `View | Tool Windows | npm` Use the tool window to [run npm, pnpm, or Yarn scripts](installing-and-removing-external-software-using-node-package-manager.html). ## Before you start Procedure: 1. Download and install [Node.js](http://nodejs.org/#download). Note that npm is also installed so if you are going to use it, you are through with the preliminary steps. 2. To use Yarn, install it as described on the [Yarn official website](https://yarnpkg.com/en/docs/install). ## Running scripts > **Tip:** > * When you build a tree of tasks for the first time during an IntelliJ IDEA session, the npm tool window is not opened yet. > > * If you already opened the npm tool window, you can access it with [Search everywhere](searching-everywhere.html). Press `Shift` (Windows), `Shift` (macOS), `Shift` (IntelliJ IDEA Classic (macOS)), `Shift` (macOS System Shortcuts), `Shift` (XWin), `Shift` (GNOME), `Shift` (KDE), `Shift` (Emacs), `Shift` (Sublime Text), `Shift` (Sublime Text (macOS)), `Shift` (NetBeans), `Shift` (Visual Studio), `Shift` (Visual Studio (macOS)), `Shift` (Eclipse), `Shift` (Eclipse (macOS)) twice to open the search window, start typing your query, for example, `npm scripts`, and select Show npm scripts from the list.  Alternatively, select `View | Tool Windows | npm` from the main menu. The npm tool window opens when you select a `package.json` file in the Project tool window (`Alt+1` (Windows), `⌘ 1` (macOS), `⌘ 1` (IntelliJ IDEA Classic (macOS)), `⌘ 1` (macOS System Shortcuts), `Alt+1` (XWin), `Alt+1` (GNOME), `Alt+1` (KDE), `Alt+1` (Emacs), `Alt+1` (Sublime Text), `⌘ 1` (Sublime Text (macOS)), `Ctrl+1` (NetBeans), `Ctrl+Alt+L` (Visual Studio), `⌘ ⌥ L` (Visual Studio (macOS)), `Alt+1` (Eclipse), `Alt+1` (Eclipse (macOS))) or open it in the editor and select Show npm Scripts from the context menu. As soon as you invoke npm, pnpm, or Yarn, the tool starts building a tree of scripts defined within the `scripts` property of the `package.json` file on which it was invoked. If you have several `package.json` files in your project, you can build a separate script tree for each of them and run scripts without dropping the previously built trees. Each tree is shown under a separate node. The tool window shows the script output, reports the errors occurred, lists the packages or plugins that have not been found, etc. The name of the last executed script is displayed on the title bar of the tool window. Procedure: To build a tree of scripts, do one of the following: * Select the required `package.json` file in the Project tool window (`Alt+1` (Windows), `⌘ 1` (macOS), `⌘ 1` (IntelliJ IDEA Classic (macOS)), `⌘ 1` (macOS System Shortcuts), `Alt+1` (XWin), `Alt+1` (GNOME), `Alt+1` (KDE), `Alt+1` (Emacs), `Alt+1` (Sublime Text), `⌘ 1` (Sublime Text (macOS)), `Ctrl+1` (NetBeans), `Ctrl+Alt+L` (Visual Studio), `⌘ ⌥ L` (Visual Studio (macOS)), `Alt+1` (Eclipse), `Alt+1` (Eclipse (macOS))) or open it in the editor and choose Show npm Scripts from the context menu. * In the npm tool window, click  on the toolbar and choose the required `package.json` file from the list. By default, IntelliJ IDEA shows the `package.json` file in the root of your project. If you have another `package.json` file, click Choose package.json and select the `package.json` file you need in the dialog that opens. IntelliJ IDEA adds a new node with the path to the chosen `package.json` file on its title and builds a scripts tree under the new node. Procedure: To re-build a tree * Switch to the required node and click  on the toolbar. Procedure: To sort the scripts in a tree by their names * Click  on the toolbar, choose Sort by from the menu, and then choose Name. By default, a tree shows the scripts in the order in which they are defined in `package.json` (option Definition order). Procedure: Run one script 1. Double-click the script. 2. Select the script in the tree and press `Enter` (Windows), `⏎` (macOS), `⏎` (IntelliJ IDEA Classic (macOS)), `⏎` (macOS System Shortcuts), `Enter` (XWin), `Enter` (GNOME), `Enter` (KDE), `Enter` (Emacs), `Enter` (Sublime Text), `⏎` (Sublime Text (macOS)), `Enter` (NetBeans), `Enter` (Visual Studio), `⏎` (Visual Studio (macOS)), `Enter` (Eclipse), `⏎` (Eclipse (macOS)) or choose Run