Starbeam: Universal Reactivity And What It Means For You
summary
Starbeam is a reactivity library extracted from Ember that builds cells, resources, services and element modifiers as universal reactive primitives and ships framework-specific renderers for React and Preact. The React renderer required months of work to handle strict‑mode deactivation/reactivation semantics; the Preact renderer plugs in more easily. Starbeam implements reactive collections (Map, Set, Array), a debug renderer and a demo database with CRUD that updates the UI. It uses revision counters and demand-based revalidation for granular, efficient invalidation rather than full recomputation.
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chapters (10)
- 0:00Introduction to Starbeam
- 1:44Why universal reactivity matters
- 4:54Basic Starbeam API and cells
- 13:42Understanding renderers
- 23:11Resources and cleanup
- 30:31Universal design and services
- 36:26Demo: Reactive database
- 50:46Demand-based revalidation
- 56:03Performance and internals
- 1:00:12Q&A and closing
