Verify build / test / package / release scripts/tasks work on Windows

There are lots of parts of the build / test / package / release process which may depend on UNIX features (e.g. ,bash, mkdir -p, etc.) that may not exist on Windows.

Describe the solution you’d like

We should ascertain which of the npm scripts work properly on Windows, fix any which are easy to fix, and document any which work and which do not as well as whatever preconditions are required to make them work (e.g., do you need WSL?)

Describe alternatives you’ve considered

Let would-be Blockly contributors who use Windows fend for themselves.

Additional context

See also #4983 re: npm script documentation.

[yamadayutaka]

Hi @BeksOmega Thank you for your confirmation. I’m considering another solution using Gulp. An updated version of google-closure-deps hasn’t been released yet, so I’m creating it in my branch as a draft version.

https://github.com/yamadayutaka/blockly/tree/draft/test_tasks

It doesn’t require WSL or Git Bash, so I think it’s easier to get started.

It has also passed testing with GitHub Actions using Windows Runner.

https://github.com/yamadayutaka/blockly/actions/runs/2144051205

[BeksOmega]

I’m sorry. I found a coding mistake in my feature/run_build_on_windows branch, so I fixed it and forced push.

No problem at all! I actually wasn’t able to test yet 😕 The device I was attempting to use ran into an npm error I couldn’t resolve. So now I’m trying to upgrade a different device to a version of windows that supports WSL. Will keep you updated!