If you installed UglifyJS through the Node Package Manager, IntelliJ IDEA locates the package itself and fills in the field automatically with the uglifyjs alias. In the Program text box, specify the location of the UglifyJS executable file. The File Watchers page that opens shows the list of already configured File Watchers.Ĭlick or press Alt+Insert and select the UglifyJS predefined template from the list. In the Settings dialog ( Ctrl+Alt+S), click File Watchers under Tools. Learn more from the UglifyJS official website. In the embedded Terminal ( Alt+F12), type: Install and enable the File Watchers plugin on the Settings | Plugins page, tab Marketplace, as described in Installing plugins from JetBrains repository. For more details about plugins, see Managing plugins. In the search field, type JavaScript and TypeScript. Press Ctrl+Alt+S to open the IDE settings and select Plugins. Make sure the JavaScript and TypeScript bundled plugin is enabled in the settings. Make sure you have Node.js on your computer. To change this default presentation, configure file nesting in the Project tool window. However, in the Project Tree, the file with the minified code is shown under the source JavaScript file which is displayed as a node. The location of this generated file is defined in the Output paths to refresh field of the New Watcher dialog. The generated minified code is stored in a separate file with the name of the source JavaScript file and the extension min.js. You can specify other events that invoke UglifyJS. To compress your code automatically, you need to configure a UglifyJS File Watcher which will track changes to your files and run UglifyJS.īy default, minification starts as soon as a JavaScript file in the File Watcher's scope is changed and saved.
For ES6 and later versions, use build tools, for example, Babel or webpack. UglifyJS works only with JavaScript (ES5 and earlier). If you're not using build tools, you can use a stand-alone tool, such as UglifyJS. Most often compression is done as a step in your build process, with build tools like webpack.
At the production stage, they only increase the size of code to be transferred. During development and debugging, these characters make code easier to read. Minification or compression means removing all unnecessary characters, such as spaces, new lines, comments, without changing the functionality of the source code.
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