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wast

v245.0.1 Stable

Customizable Rust parsers for the WebAssembly Text formats WAT and WAST

Apache-2.0 WITH LLVM-exception OR Apache-2.0 OR MIT Edition 2021 MSRV 1.82.0

Quick Verdict

  • โœ“Actively maintained (updated 43d ago)
  • โœ“Stable API (245.x for 6+ years)
  • โœ“Massive adoption (1.6K crates depend on it)
  • โœ“Permissive license (Apache-2.0 WITH LLVM-exception OR Apache-2.0 OR MIT)

Security

Checking security advisories...
Downloads
34.2M
Dependents
1.6K
Releases
164
Size
159KB

Deep Insights

๐Ÿ“ˆ
Strong growth momentum

2.4M downloads in the last 30 days (80.9K/day), up 45% from the previous period.

๐Ÿ”—
Widely adopted

1.6K crates depend on wast. Strong ecosystem adoption means battle-tested code and long-term stability.

๐Ÿ‘ค
Prolific maintainer

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

โœ…
Stable for 6+ years

The API has been stable (1.x) for over 6 years with 164 releases. This level of maturity means you can depend on it without worrying about breaking changes.

๐ŸŒŸ
Used by top crates

Notable dependents include wat, wit-component, wasm-bindgen-cli-support, wasm-bindgen-multi-value-xform, wasm-bindgen-externref-xform. When high-quality crates choose wast, it's a strong quality signal.

Health Breakdown

Maintenance 17/25

Recency, release consistency, active ratio

Quality 18/25

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 ยท last 90 days
59K/day avg+87%
050K100K12/291/162/32/213/113/28

Top Dependents

Version Adoption

v35.0.2
49%
v63.0.0
21%
v39.0.0
14%
v216.0.0
8%
v64.0.0
8%

Release Timeline

164 releases1 yankedsince 2019
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2019
12
2020
28
2021
11
2022
13
2023
30
2024
34
2025
33
2026
3
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Yanked

Feature Flags

default =["wasm-module", "component-model"]

dwarfwasm-module*component-model*

README

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Maintainers

Dependencies
9
direct dependencies
Dependents
1.6K
crates depend on wast