Error still with non-DOMWidget widgets

[kylebarron]

• shinywidgets version: 0.3.1
• Python version: 3.11.4
• Operating System: macOS 14.2.1

Description

I'm trying to run the example I proposed in #133 but it still isn't working for me. In particular, I can see a map render when I

Working:

Not working:

If I look at the browser console, I see a few errors:

What I Did

In this PR https://github.com/developmentseed/lonboard/pull/409/files I have a lockfile (you need to be on Poetry >=1.8) and minimal reproducible example. If you comment out the def layer block, the map will render; otherwise it'll fail with a blank screen.

[cpsievert]

Does the example work for you with the pypi release of lonboard? It does for me, but then when I try with the latest Ionboard (developmentseed/lonboard@015672d) I'm seeing the error below, which is getting thrown by anywidget.

  File "/Users/cpsievert/github/py-shinywidgets/sandbox/reprex/app.py", line 2, in <module>
    from lonboard import Map, ScatterplotLayer
  File "/Users/cpsievert/anaconda3/lib/python3.10/site-packages/lonboard/__init__.py", line 16, in <module>
    from ._map import Map
  File "/Users/cpsievert/anaconda3/lib/python3.10/site-packages/lonboard/_map.py", line 48, in <module>
    class Map(BaseAnyWidget):
  File "/Users/cpsievert/anaconda3/lib/python3.10/site-packages/traitlets/traitlets.py", line 967, in __new__
    return super().__new__(mcls, name, bases, classdict)
  File "/Users/cpsievert/anaconda3/lib/python3.10/site-packages/anywidget/widget.py", line 66, in __init_subclass__
    file_contents = try_file_contents(getattr(cls, key))
  File "/Users/cpsievert/anaconda3/lib/python3.10/site-packages/anywidget/_util.py", line 258, in try_file_contents
    raise FileNotFoundError(f"File not found: {path}")
FileNotFoundError: File not found: /Users/cpsievert/anaconda3/lib/python3.10/site-packages/lonboard/static/index.js

I have a hunch that this error means that Ionboard doesn't work with the latest anywidget because Ionboard is doing something non-standard with its static assets, and also that, shinywidgets is failing to render for similar reasons. Hopefully, if Ionboard addresses that issue with anywidget, it'll also fix the shinywidgets issue.

[kylebarron]

It does for me, but then when I try with the latest Ionboard (developmentseed/lonboard@015672d) I'm seeing the error below, which is getting thrown by anywidget

That's because you need to build the JS parts from source as well, see https://github.com/developmentseed/lonboard/blob/main/DEVELOP.md#javascript

[kylebarron]

It turns out that it works from the command line with poetry run shiny run app.py when viewed in Chrome; it just fails with the Shiny vscode extension with Shiny: Run Shiny App. I don't know where a relevant issue for that would be.

[kylebarron]

In case it's useful, here's what I see in vscode:

Screen.Recording.2024-03-19.at.5.52.35.PM.mov