Stylus

To compile your code automatically, you need to install a compiler and configure a Stylus File Watcher which will track changes to your files and run the compiler.

When you open a file, WebStorm checks whether an applicable File Watcher is available in the current project. If such File Watcher is configured but disabled, WebStorm displays a popup that informs you about the configured File Watcher and suggests to enable it.

If an applicable File Watcher is configured and enabled in the current project, WebStorm starts the compiler automatically upon the event specified in the New Watcher dialog.

• If the Auto-save edited files to trigger the watcher checkbox is selected, the File Watcher is invoked as soon as any changes are made to the source code.

• If the Auto-save edited files to trigger the watcher checkbox is cleared, the File Watcher is started upon save (File | Save All, Ctrl0S) or when you move focus from WebStorm (upon frame deactivation).

Learn more from File Watchers.

WebStorm creates a separate file with the generated output. The file has the name of the source Stylus file and the extension .css. The location of the generated files is defined in the Output paths to refresh field of the New Watcher dialog. However, in the Project Tree, they are shown under the source file which is now displayed as a node.

You can configure Stylus-aware syntax highlighting according to your preferences and habits.