Greetings. Is this section of the documentation still up-to-date?
https://github.com/plotly/plotly.py#jupyterlab-support

As you probably know, JupyterLab 3.0 allows for prebuilt extensions that can be pip installed. This removes the user-facing dependency on Node.js and skips the lengthy extension/ lab build process, which results in a much smoother experience. Additionally, you could specify ipywidgets as a pypi dependency of the extension's setup.py install_requires=[]. Making the installation process a one-liner.

Thank you.