I Couldn't Submit a PR, So I Got Hired and Fixed It

// Before: debounced search with no abort
const debouncedSearch = debounce((query) => {
  fetch(`/api/search?q=${query}`)
    .then(res => res.json())
    .then(setResults);
}, 300);

// After: debounced search with AbortController
let controller;
const debouncedSearch = debounce((query) => {
  if (controller) controller.abort();
  controller = new AbortController();
  fetch(`/api/search?q=${query}`, { signal: controller.signal })
    .then(res => res.json())
    .then(setResults)
    .catch(err => {
      if (err.name !== "AbortError") throw err;
    });
}, 300);