Prefer an output channel over console.log

[Tyriar]

Testing #10170

I see a bunch of console.logs when opening a Python notebook, these should go to the Jupyter output channel instead to try keep the main devtools console clean.

[rchiodo]

Those are actually from an npm module we consume. I suppose we could have it send a message instead.

[rchiodo]

Or maybe just remove those and only log errors.

[Tyriar]

That makes things trickier if you don't own the code, this is a pretty minor issue that mainly helps vscode devs/extension authors, feel free to close off if it would involve upstream changes that probably won't happen.

[rchiodo]

Oh we actually own the npm module. It's this one:
https://github.com/microsoft/vscode-jupyter-ipywidgets.git

[Tyriar]

@rchiodo is that for all 3? There's the SW ones, ipywidgets and the requirejs one (in a file that has console.warn("Registering custom require.js for Jupyter Kernel"))

[rchiodo]

SW wouldn't be us AFAIK.

The require.js one is likely another renderer side script we generate.