How do you cancel pending fetches using AbortController?
WHAT IT TESTS: Async cancellation and race-condition prevention in UI streams. ANSWER OUTLINE: Keep one AbortController, abort before each fetch, pass its signal, and swallow AbortError. RED FLAG: Forgetting prior abort or leaving rejections uncaught.
WHAT IT TESTS: Async cancellation, AbortController lifecycle, and race-condition elimination in high-frequency UI events. ANSWER OUTLINE: Keep one mutable AbortController in closure scope; call abort() before each new fetch; pass the new signal to fetch options; catch and ignore AbortError by checking error.name. RED FLAG: Failing to abort prior requests, leaking memory with orphaned connections, or letting unhandled rejections propagate to the console.
Read the original → developer.mozilla.org
- #abortcontroller
- #fetch
- #race-conditions
- #typescript
- #async
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