promises-aplus/promises-spec resource
An open standard for sound, interoperable JavaScript promises—by implementers, for implementers. observed · 2026-08-28
Health v2 · maintenance only
32/100
- Activity 0
- Release rhythm 35
- Longevity 100
Flags: no_releases
How is this computed?
round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10) — computed 2026-09-02. Adoption (stars, forks) is never an input.
- gap_med: n/a
- age_days: 5061
- days_rel: n/a
- days_push: 1127
- n_releases_24m: 0
Adoption not part of the score
1839 stars · 159 forks observed · 2026-08-28
What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded
Promises/A+ is an open specification defining the behavior of the `then` method for interoperable JavaScript promises. It is a stable standard that promise library implementers conform to, not a runnable library itself.
Use cases
- implement a promise library that interops with others
- understand how JavaScript promises and thenables work
- verify a promise implementation conforms to the standard
- learn promise states and resolution semantics
- reference the then method contract for async code
When to choose
- you are building or auditing a promise implementation
- you need the authoritative definition of promise/thenable behavior
- you want a stable, widely adopted async interop standard
When to avoid
- you need a runnable promise library to use in app code (use native promises or a library)
- you need promise creation/combination utilities, which the spec deliberately omits
Facets
learning-resource · maturity stable
concurrency documentation developer-tools web-development apis browser cross-platform promises specification async then interop-standard javascript specifications async-programming nodejs
3 sources
- readme: https://github.com/promises-aplus/promises-spec · fetched 2026-08-28 · b89b67f3a5a8
- homepage: https://promisesaplus.com/ · fetched 2026-08-29 · ecd4a469d6a7
- site_page: https://promisesaplus.com/changelog · fetched 2026-08-29 · a68dbdcaccee
Member repositories
| Repository | Role | Health v2 |
|---|---|---|
| promises-aplus/promises-spec | main | 32 |
For agents
markdown · JSON · MCP: product_card(name="promises-aplus/promises-spec")
Data as of 2026-08-30T08:39:29.467469+00:00 · Report a problem