anywidget-generator

You can create custom JavaScript widgets for Marimo notebooks by defining an anywidget class with a render function in an _esm file, then wrapping it with mo.ui.anywidget to ensure proper interactive display within the notebook.

The best way to reduce boilerplate when building anywidget components is to use a generator that scaffolds the vanilla JavaScript class structure, handles pathlib references for external _esm and _css files, and automatically enforces mo.ui.anywidget wrapping.

Yes, you can use external CSS and JavaScript files with anywidget in Marimo. The component supports optional external _esm and _css files loaded via pathlib, allowing you to separate styling and rendering logic from the main widget definition.

To wrap an anywidget class so it renders correctly in a Marimo notebook, instantiate your custom widget and pass it directly to marimo's UI wrapper: widget = mo.ui.anywidget(OriginalAnywidget()). This enforces consistent display and interactivity.

Yes, the anywidget wrapper for Marimo supports optional scripts, references, and assets. It relies on YAML frontmatter in SKILL.md for configuration and allows you to extend widget functionality by including additional resources.

Your custom anywidget might not display properly in a Marimo notebook if you skip the required wrapping step. You must enforce wrapping by passing the instantiated widget through mo.ui.anywidget to ensure consistent rendering and state management.