RxJS test runner playground

[moniuch]

Would it be a bad idea to embed a testing playground on the rxjs docs site?

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Create own rxjs-blitzes on the go and be able to run tests right off the bat

I have been using stackblitz for a while, but none of their templates (including rxjs) seems to come with a test runner pre-configured. I know it's possible but still a bit of a mystery of how to do that. Not an out-of-the-box thing, definitely. This might be discouraging from learning to test.

Having such a test playground could encourage people to skill up on their rxjs/testing techniques. For some devs it would at least be a way of getting familiar with the notion of testing (which in many organization is a problem of its own).

If you ask me, this feature would make my "rxjs docs site visitor" experience much more valuable.

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Code examples as real test cases

I would see the operator code examples, and specifically assertions, to be migrated from the old-style

console.log(value) // output: 'hello', 'world'

to real world assertions. Or at least provide a new option:
StackBlitz | jsBin | jsFiddle | Test Playground
gradually to more and more pages.

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For a start, I think vitest could be used with its in-source way of writing tests.