@serenity-is/domwise / useUpdatableComputed

Function: useUpdatableComputed()

useUpdatableComputed(): object

Defined in: src/signals.ts:117

Creates a factory for computed signals that can be manually invalidated in batch.

Computed signals produced by the returned computed wrapper depend on an internal updater signal; calling update() bumps that signal so every derived computed re-evaluates on its next read, without wiring each one to a separate source.

Returns

object

An object with:

• computed — factory that wraps a computation so it tracks the shared updater.
• update — bumps the updater, invalidating all computeds created from this factory.

computed()

computed: <T>(fn) => Computed<T>

Type Parameters

T

T

Parameters

fn

() => T

Returns

Computed<T>

update()

update: () => void

Returns

void

Example

const { computed: uc, update } = useUpdatableComputed();
const derived = uc(() => expensiveRead());
// later: after external state changes
update();