Sentinel 3.0 Migration

Sentinel 3.0 replaces signal-shaped reads with the standard getSnapshot() and subscribe() external-store contract.

Replace value and peek()

Use getSnapshot() for both initial reads and reads inside subscription listeners.

import { createViewport } from '@vielzeug/sentinel';

// Before
const viewport = createViewport();
console.log(viewport.value.width);
console.log(viewport.peek().height);

// After
const viewport = createViewport();
console.log(viewport.getSnapshot().width);
console.log(viewport.getSnapshot().height);

Bridge Sentinel into Ripple explicitly

Sentinel no longer behaves like a Ripple signal. Use fromSubscribable() when a reactive graph should track it.

import { computed, fromSubscribable } from '@vielzeug/ripple';
import { createViewport } from '@vielzeug/sentinel';

// Before
const viewport = createViewport();
const compact = computed(() => viewport.value.width < 640);

// After
const viewport = createViewport();
const viewportState = fromSubscribable(viewport, { signal: viewport.disposalSignal });
const compact = computed(() => viewportState.value.width < 640);

The bridge unsubscribes when the Sentinel is disposed. Dispose any watchers or computed scopes owned by your application separately.

Remove runtime injection

SentinelOptions.runtime is removed. Sentinel owns a plain snapshot and subscription set; reactive runtime ownership belongs to the bridge created by the consumer.