promise time limit core interview pattern Pattern
1 problems
Pattern pages help build reusable solving frames. Identify signals first, then explain state, transition, and edge handling.
Recognition Signals
- Looking for correct usage of Promise.race or equivalent time-limiting logic.
- Checking that arguments are passed correctly to the original function inside the wrapper.
Solve Flow
- 1. Define the active state/window.
- 2. Update state while preserving invariants.
- 3. Validate with edge-heavy examples.
Common Misses
- Forgetting to reject the promise when the time limit is exceeded.