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swc_ecma_transforms_base

v39.0.0 Stable

rust port of babel and closure compiler.

Apache-2.0 Edition 2021

Quick Verdict

  • โœ“Actively maintained (updated 6d ago)
  • โœ“Stable API (39.x for 5+ years)
  • โœ“Massive adoption (17.4K crates depend on it)
  • !Heavy dependency tree (21 direct deps)
  • โœ“Permissive license (Apache-2.0)

Security

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Downloads
7.7M
Dependents
17.4K
Releases
734
Size
93KB

Deep Insights

๐Ÿ“ˆ
Strong growth momentum

624.2K downloads in the last 30 days (20.8K/day), up 45% from the previous period.

๐Ÿ›๏ธ
Foundational crate

17.4K crates depend on swc_ecma_transforms_base 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 215 crates. This suggests deep Rust expertise and long-term commitment to the ecosystem.

โœ…
Stable for 5+ years

The API has been stable (1.x) for over 5 years with 734 releases. This level of maturity means you can depend on it without worrying about breaking changes.

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Heavy dependency tree

21 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_react, swc_ecma_transforms_typescript, swc_core, swc_ecma_transforms_proposal, swc_ecma_transforms_classes. When high-quality crates choose swc_ecma_transforms_base, it's a strong quality signal.

Health Breakdown

Maintenance 19/25

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
14K/day avg+129%
010K20K30K12/291/162/32/213/113/28

Top Dependents

Version Adoption

v0.138.2
44%
v0.137.7
20%
v0.149.0
18%
v30.0.1
12%
v0.134.42
7%

Release Timeline

734 releases2 yankedsince 2021
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2021
137
2022
231
2023
241
2024
72
2025
48
2026
5
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Yanked

Feature Flags

concurrentinline-helpersconcurrent-renamer

README

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Maintainers

Dependencies
21
direct dependencies
Dependents
17.4K
crates depend on swc_ecma_transforms_base