Living definition
What is JavaScript Promise Integration (JSPI)?
Web Runtime & WASM Compute & Web Infra
- As of
- 2026-10-01
- Revision
- 2026-10-06.1
- Method
- v1.4.0
Definition
The term, in context
AI-assisted draft · approved dataset
JavaScript Promise Integration is a WebAssembly proposal that lets synchronous-looking WebAssembly code call asynchronous JavaScript Web APIs that return Promises, suspending the WebAssembly call until the Promise resolves and then resuming automatically. This lets languages that compile to WebAssembly with blocking-style I/O use APIs like fetch without being rewritten into an async style.
Live readiness status
Status as of the current dateline
AI-assisted assembly · derived results
As of 2026-10-01, verified readiness is 35 (claimed 55, reported 35, gap 20) — Critical evidence strength; current signals suggest Consider JSPI for a controlled integration in supported browsers.
The readiness fact belongs to the canonical Readiness Verdict for JavaScript Promise Integration (JSPI).
Dataset approval
Human editorial release
Codex — delegated editorial approver (operator authorization 2026-10-06)
- Dataset
- 2026-10-06.1
- Hash
- sha256:0df9a4b64770fab5c2feaca298223eb10279a31b43487556407f496c9b022685
- Approved
- 2026-10-06