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wat

v1.250.0 Stable

Rust parser for the WebAssembly Text format, WAT

Apache-2.0 WITH LLVM-exception OR Apache-2.0 OR MIT Edition 2024 MSRV 1.85.0

Quick Verdict

  • Actively maintained (updated 4d ago)
  • Stable API (1.x for 9+ years)
  • Massive adoption (5.2K crates depend on it)
  • Tiny footprint (14KB, 1 deps)
  • Permissive license (Apache-2.0 WITH LLVM-exception OR Apache-2.0 OR MIT)

Security

Checking security advisories...
Downloads
28.2M
Dependents
5.2K
Releases
160
Size
14KB

Deep Insights

📈
Strong growth momentum

2.5M downloads in the last 30 days (83.3K/day), up 35% from the previous period.

🔗
Widely adopted

5.2K crates depend on wat. Strong ecosystem adoption means battle-tested code and long-term stability.

👤
Prolific maintainer

The primary maintainer publishes 151 crates. This suggests deep Rust expertise and long-term commitment to the ecosystem.

Stable for 9+ years

The API has been stable (1.x) for over 9 years with 160 releases. This level of maturity means you can depend on it without worrying about breaking changes.

🪶
Minimal dependencies

Only 1 direct dependencies. Lean dependency tree means faster builds and lower supply chain risk.

📐
Compact crate

At 13KB, wat is lightweight. Small crate size correlates with focused, well-scoped functionality.

🌟
Used by top crates

Notable dependents include wit-parser, wit-component, wasmtime-environ, wasmtime, wasmi. When high-quality crates choose wat, it's a strong quality signal.

Health Breakdown

Maintenance 19/25

Recency, release consistency, active ratio

Quality 21/25

Yanked ratio, deps, size, maturity, features

Community 10/20

Reverse deps, ownership, ecosystem

Popularity 8/15

Downloads, momentum, growth trend

Documentation 15/15

Docs, repo, license, metadata

Download Trend

Daily downloads · last 90 days
65K/day avg+62%
050K100K2/263/164/34/215/95/26

Top Dependents

Version Adoption

v1.245.1
39%
v1.244.0
21%
v1.248.0
15%
v1.246.2
15%
v1.247.0
9%

Release Timeline

10 releasessince 2026
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Feature Flags

default =["component-model"]

dwarfcomponent-model*

README

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Maintainers

Dependencies
1
direct dependencies
Dependents
5.2K
crates depend on wat