AbortController for Cancelling Fetches
AbortController gives you a signal you can pass to fetch (and many other APIs) to cancel an in-flight request. controller.abort() rejects the fetch promise with an AbortError.The c…
Read article →Cancelling Long Operations with AbortSignal
Beyond fetch, AbortSignal is now accepted by addEventListener, setTimeout, setInterval, and many Node APIs.The cleanest pattern: pass a signal to the constructor of a long-lived…
Read article →URLPattern Replaces Custom Route Regexes
URLPattern is a built-in matcher for URL paths and full URLs. new URLPattern({pathname: '/users/:id'}).exec(input) returns named groups without hand-rolled regex.It supports wildca…
Read article →fetch Streaming Responses in the Browser
response.body is a ReadableStream. You can pipe it to TextDecoderStream or read it chunk-by-chunk with a reader to handle large or streaming responses.Server-sent JSON lines,…
Read article →Custom REST Routes with Proper Permissions
Register routes with register_rest_route(). The permission_callback is required — set it to __return_true only when the route is genuinely public.For privileged operations, check c…
Read article →