Problem code 'handler-async' ​

Contract 2.0.0 · package sha256 a857eca95b35921109faf997094bb4192f12527d9d0fcd4be7e97f06425bad6e · generated from configurator-runtime.d.ts, tables/problems.json and services/onsite-scripter/scripts/contract-docs-what-to-do.json by services/onsite-scripter/scripts/build-contract-docs.mjs; edit the source, not this file.

A member of ProblemCode · stable · since 2.0.0

An event handler returned a Promise (an untyped call); it was not awaited.

What to do ​

A session.on handler must not return a Promise (an async handler is a type error): start the async work inside a plain handler, and catch it there.

session.on('committed', ({ patch }) => { void saveDraft(patch).catch(console.error); }, { signal });

Where the declaration names it ​

• Events.problem: A 'handler-threw', 'handler-async' or 'handler-rejected' that a 'problem' handler caused, and any Problem of an operation it called, is recorded but fires no 'problem' event.
• Problem.event: The event name, for 'handler-threw', 'handler-async', 'handler-rejected' and 'unknown-event'.
• Session.on: Errors: an unknown event records 'unknown-event' and returns a no-op unsubscribe; a handler that throws records 'handler-threw', one that returns a Promise 'handler-async', and that Promise's rejection 'handler-rejected'.

The set is open: handle a code you don't know ('other').