LazyPromise is a lightweight, Promise-like primitive that is lazy, cancelable, and emits synchronously instead of in a microtask. It supports typed errors and dependency injection, positioned as an alternative to libraries like Effect by combining Observable-like cancellation with single-shot semantics.
Background
The JavaScript async ecosystem has seen growth in structured concurrency and effect-system libraries like Effect, but many developers seek lighter alternatives with simpler APIs.
- Source
- Lobsters
- Published
- Aug 16, 2026 at 07:22 AM
- Score
- 5.0 / 10