SMRTR ProgrammingJan 4, 2026Lobsters

LazyPromise: an async primitive that complements Signals and supports typed errors

SMRTR summary

LazyPromise is a JavaScript primitive that executes only when subscribed, supports cancellation, and runs synchronously without microtasks. It includes typed errors and a pipe-based API for better execution control.

SMRTR provides this summary for quick context. The original article belongs to Lobsters.

Read the original article
SMRTR Programming

Get the next batch of curated summaries in your inbox.

This archive is built from SMRTR newsletter summaries. Subscribe for hand-picked stories without the extra noise.