Debouncing with a watcher in Vue
Vue interview exercise on Computed & watchers, difficulty 3 of 3. Solve it in the editor beside a worked example, or cold in Interview mode with the example hidden; the tests run the moment you do.
Write DebouncedSearch with props `onSearch` ((term: string) => void) and `delay` (ms, default 100): an <input> bound to a ref and <p class="status"> reading "Typing…" while a search is pending and "Idle" otherwise. Call onSearch with the trimmed text once per pause of `delay` ms, not on every keystroke, and never for text equal to what was last searched.
Each exercise pairs a worked example with a twin problem to solve in a real editor; the tests run the moment you do. Interview mode hides the example: solve it from memory, without the hint or the solution, and it counts as solved cold. Progress is saved in your browser, and in your account if you sign in.