Constrain any operation to complete within a certain time.
Very often you want to put a limit on how long an operation may run such as a
fetch() of an external resource, or handling a web request. To do this, you
can use the timebox() function. It will encapsulate the operation and either
return its result, or a otherwise a "timeout" object indicating that it did not
complete in the required time.
import { timebox } from "@effectionx/timebox";
import { handleRequest } from "./handle-request";
// a theoretical request handler
export function* handler(request) {
// do not let the handler run for more than 10 seconds
let result = yield* timebox(10000, () => handleRequest(request));
if (result.timeout) {
return new Response(504, "Gateway Timeout");
} else {
return result.value;
}
}