Support JupyterLab

[thomasballinger]

I have not yet opened JupyterLab to see if these work there. Since JupyterLab allows widgets to stick the side, bottom, etc. of the screen, how to we opt in into that?

[cornhundred]

I'm seeing the following error when I try to open the widget in JupyterLab

523.92b431af199caa12622d.js:1 Error: Module observable-jupyter-widget, semver range ^0.1.8 is not registered as a widget module
    at x.loadClass (523.92b431af199caa12622d.js:1:5727)
    at x.<anonymous> (272.eb0d340d1eec40ac564f.js:1:9479)
    at 272.eb0d340d1eec40ac564f.js:1:6081
    at Object.next (272.eb0d340d1eec40ac564f.js:1:6186)
    at 272.eb0d340d1eec40ac564f.js:1:5122
    at new Promise (<anonymous>)
    at D (272.eb0d340d1eec40ac564f.js:1:4867)
    at x.e._make_model (272.eb0d340d1eec40ac564f.js:1:9358)
    at x.<anonymous> (272.eb0d340d1eec40ac564f.js:1:9212)
    at 272.eb0d340d1eec40ac564f.js:1:6081

I'm thinking it might be related to this issue:
jupyter-widgets/widget-ts-cookiecutter#39

Here's a link to a Code Ocean capsule that reproduces the issue - works in Jupyter Notebook and does not run in Jupyter Lab.

[thomasballinger]

I tried to get this up and running this morning and it's going to take more work, I can't make a release atm.

Thanks for reporting. The linked issue sounds plausible to me, but when I look at the wheel I do see both the lab extension and the nbextension in there (this is after downloading the wheel here, unzipping it, and looking at the observable_jupyter_widget-0.1.8.dev0.data/ directory)

It is helpful to know that just publishing it at https://www.npmjs.com/package/observable-jupyter-widget may not be enough.

[cornhundred]

I raised an issue in the cookiecutter that I think you used to build this library @thomasballinger - let's see if we hear anything back :)