WebAssembly/spec resource
WebAssembly specification, reference interpreter, and test suite. observed · 2026-08-28
Health v2 · maintenance only
77/100
- Activity 99
- Release rhythm 35
- Longevity 100
Flags: no_releases no_license
How is this computed?
round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10) — computed 2026-09-03. Adoption (stars, forks) is never an input.
- gap_med: n/a
- age_days: 4039
- days_rel: n/a
- days_push: 7
- n_releases_24m: 0
Adoption not part of the score
3442 stars · 534 forks observed · 2026-08-28
What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-29, confidence not recorded
The official WebAssembly specification repository containing the normative spec documents, a reference interpreter (OCaml), and the official conformance test suite. It defines the core semantics, JavaScript and web embedding APIs, and metadata/legacy extensions across WebAssembly versions 1.0 through 3.0.
Use cases
- implement a WebAssembly engine and verify conformance
- read the formal semantics of WebAssembly instructions and validation
- run the official WebAssembly test suite against my runtime
- understand the JavaScript and web embedding APIs for wasm
- cite the WebAssembly specification in academic work
When to choose
- building or validating a WebAssembly compiler, runtime, or toolchain
- you need the authoritative, formal definition of WebAssembly semantics
- you want the canonical conformance test suite for wasm engines
When to avoid
- you want a production WebAssembly runtime or compiler to execute code
- you need tutorials or beginner-friendly introductions to WebAssembly
- you want tooling for building or bundling wasm modules
Facets
learning-resource · maturity active
interpreter testing documentation programming-language programming-languages compilers web-development developer-tools wasm browser cross-platform webassembly specification reference-interpreter test-suite standards w3c
2 sources
- readme: https://github.com/WebAssembly/spec · fetched 2026-08-28 · 2f65f4f9f614
- homepage: https://webassembly.github.io/spec/ · fetched 2026-08-29 · ef76a5778f06
Member repositories
| Repository | Role | Health v2 |
|---|---|---|
| WebAssembly/spec | main | 77 |
For agents
markdown · JSON · MCP: product_card(name="WebAssembly/spec")
Data as of 2026-08-30T08:39:29.467469+00:00 · Report a problem