JetBrains Rider lets you translate your Stylus code into CSS on the fly.
Before you start
In the embedded Terminal (Alt+F12), type:
npm install --global stylus
Learn more from the Stylus official website.
Compiling the Stylus code
To compile your code automatically, you need to configure a Stylus File Watcher which will track changes to your files and run compiler.
When you open a file, JetBrains Rider checks whether an applicable File Watcher is available in the current project. If such File Watcher is configured but disabled, JetBrains Rider 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, JetBrains Rider 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 ( , Ctrl+S) or when you move focus from JetBrains Rider (upon frame deactivation).
JetBrains Rider 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.
Create a File Watcher
In the Settings/Preferences dialog Ctrl+Alt+S, click File Watchers under Tools. The File Watchers page that opens shows the list of already configured File Watchers.
Click the or press Alt+Insert and choose the Stylus predefined template from the list.
In the Program field, specify the path to the executable file:
stylus for macOS and Unix.
stylus.bat for Windows.
Type the path manually or click and choose the file location in the dialog that opens.
Proceed as described in File watchers.
Configuring syntax highlighting
You can configure Stylus-aware syntax highlighting according to your preferences and habits.
In the Settings/Preferences dialog Ctrl+Alt+S, go to .
Select the color scheme, accept the highlighting settings inherited from defaults or customize them as described in Colors and fonts of IDE text.