Retry a failing call in TypeScript
TypeScript interview exercise on Async, difficulty 3 of 3. Solve it in the editor beside a worked example; the tests run the moment you do.
Write async retry(fn, attempts) that calls fn up to attempts times, resolving with the first success and rejecting with the last error if every attempt fails.
Each exercise pairs a worked example with a twin problem to solve in a real editor; the tests run the moment you do. Progress is saved in your browser, and in your account if you sign in.