Built-in waitFor and waitUntil

[sheremet-va]

Clear and concise description of the problem

There are situations when it's not obvious when assertion will succeed because there is no way to track it (async operation performed inside a sync one). For this situation, community has come up with different solutions:

• https://www.npmjs.com/package/wait-for-expect
• https://www.npmjs.com/package/async-wait-until

Suggested solution

I think it would be nice to provide these kinds of helpers in the core.

Alternative

No response

Additional context

No response

Validations

• Follow our Code of Conduct
• Read the Contributing Guidelines.
• Read the docs.
• Check that there isn't already an issue that request the same feature to avoid creating a duplicate.

[AriPerkkio]

This would be really useful. I'm often writing waitFor utility myself when using Vitest in new project.

Might want to look into testing-library/web-testing-library#3 while implementing this.

[Dunqing]

I am interested in this. In which package should I add it?

[sheremet-va]

I am interested in this. In which package should I add it?

It should probably be exposed on vi object.