Creates a reactive transition tracker for an AsyncStatus source
createTransitionTracker
Functioncore/utils/async-state
projects/core/utils/transition-tracker.ts
Description#
Creates a reactive transition tracker for an AsyncStatus source.
Uses linkedSignal internally — when source() changes, previous holds
the prior value and current holds the new one. Both are memoized signals.
Signature#
createTransitionTracker(source)Parameters#
@paramsource
Reactive function that reads the current AsyncStatus.
const tracker = createTransitionTracker(() => this.state().status());
effect(() => {
const { current, previous } = tracker;
if (current() === previous()) return; // no change — deduplicated by linkedSignal
if (current() === 'success') { ... }
});Returns#
StatusTransition