What:

Closes#873

Why:

There's little value inwaitFor if one has to advance timers by themselves.

How:

Copy implementation from@testing-library/dom.

There's an opportunity to write a more genericwaitFor that we can share across Testing Library that specific host configs build on top on (e.g. also running MutationObserver in/dom). But that requires more coordination (starting with an extensive test suite). For now this hopefully suffices (pending testing in actual codebases).

Checklist:

• Documentation updated
• Tests
  • timing out
  • timing out without a callback error
  • switching to real timers
• Test in actual codebase
• Ready to be merged
  
• Added myself to contributors table