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swc_ecma_parser

v41.1.2 Stable

Feature-complete es2019 parser.

Apache-2.0 Edition 2021

Quick Verdict

  • โœ“Actively maintained (updated 21d ago)
  • โœ“Stable API (41.x for 7+ years)
  • โœ“Massive adoption (27.4K crates depend on it)
  • !Heavy dependency tree (24 direct deps)
  • โœ“Permissive license (Apache-2.0)

Security

Checking security advisories...
Downloads
32.4M
Dependents
27.4K
Releases
719
Size
184KB

Deep Insights

๐Ÿ“Š
Stable downloads

1.7M downloads in the last 30 days (55.5K/day). Volume is roughly flat compared to the previous period.

๐Ÿ›๏ธ
Foundational crate

27.4K crates depend on swc_ecma_parser โ€” it's part of the Rust ecosystem's core infrastructure. Removing it from your dependency tree would be extremely difficult.

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Prolific maintainer

The primary maintainer publishes 226 crates. This suggests deep Rust expertise and long-term commitment to the ecosystem.

โœ…
Stable for 7+ years

The API has been stable (1.x) for over 7 years with 719 releases. This level of maturity means you can depend on it without worrying about breaking changes.

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Heavy dependency tree

24 direct dependencies. Consider the impact on compile times and supply chain complexity.

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Used by top crates

Notable dependents include swc_ecma_transforms_base, swc_ecma_utils, swc_ecma_codegen, swc_ecma_transforms_react, swc_ecma_transforms_typescript. When high-quality crates choose swc_ecma_parser, it's a strong quality signal.

Health Breakdown

Maintenance 18/25

Recency, release consistency, active ratio

Quality 17/25

Yanked ratio, deps, size, maturity, features

Community 12/20

Reverse deps, ownership, ecosystem

Popularity 8/15

Downloads, momentum, growth trend

Documentation 13/15

Docs, repo, license, metadata

Download Trend

Daily downloads ยท last 90 days
50K/day avg-46%
020K40K60K80K4/265/146/16/197/77/24

Top Dependents

Version Adoption

v39.0.2
28%
v41.1.2
24%
v39.1.1
23%
v39.0.1
14%
v41.1.1
11%

Release Timeline

10 releases1 yankedsince 2026
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Feature Flags

default =["typescript", "stacker"]

flowdebugverifyunstabletypescript*tracing-spans

README

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Maintainers

Dependencies
24
direct dependencies
Dependents
27.4K
crates depend on swc_ecma_parser