streamz's typing system can't work properly in vscode

summary

streamz's typing system can't work properly in vscode, severely reduceing user experience.

vscode version

Version: 1.83.1 (system setup)
Commit: f1b07bd25dfad64b0167beb15359ae573aecd2cc
Date: 2023-10-10T23:48:05.904Z
Electron: 25.8.4
ElectronBuildId: 24154031
Chromium: 114.0.5735.289
Node.js: 18.15.0
V8: 11.4.183.29-electron.0
OS: Windows_NT x64 10.0.22621

streamz version

name : streamz
version : 0.6.4
description : Streams

dependencies

• six *
• toolz *
• tornado *
• zict *

python version

3.10.2

evidence

[martindurant]

Sorry, I have no idea of how to inform VSCode of what's going on.

[MarcSkovMadsen]

I believe the challenge is that map is registered dynamically via @Stream.register_api().

I've sometimes had success asking for help in the Pylance or Pyright github forums for questions like these. Those two tools are what typically powers VS Code.

But basically, if mypy can understand that .map is there. Then Pylance/ Pyright can too.