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ast-grep-core

v0.42.0 Growing

Search and Rewrite code at large scale using precise AST pattern

MIT Edition 2021 MSRV 1.79
Development toolsCommand line utilitiesParsing tools #search#ast#pattern#rewrite#codemod

Quick Verdict

  • โœ“Actively maintained (updated 12d ago)
  • !Pre-1.0: API may have breaking changes
  • โœ“Massive adoption (1.1K crates depend on it)
  • โœ“Permissive license (MIT)

Security

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Downloads
1.0M
Dependents
1.1K
Releases
172
Size
45KB

Deep Insights

๐Ÿ“ˆ
Strong growth momentum

383.1K downloads in the last 30 days (12.8K/day), up 78% from the previous period.

๐Ÿ”—
Widely adopted

1.1K crates depend on ast-grep-core. Strong ecosystem adoption means battle-tested code and long-term stability.

โš ๏ธ
Single maintainer risk

ast-grep-core has only 1 owner despite 1.1K dependents. This is a bus-factor concern โ€” consider the implications for long-term support.

๐Ÿ”ฌ
Pre-1.0 for over a year

Despite being 3+ years old, ast-grep-core hasn't reached 1.0 yet. Expect potential API changes between versions.

๐Ÿ“
Compact crate

At 44KB, ast-grep-core is lightweight. Small crate size correlates with focused, well-scoped functionality.

๐ŸŒŸ
Used by top crates

Notable dependents include ast-grep-language, ast-grep, ast-grep-config, ast-grep-lsp, ast-grep-dynamic. When high-quality crates choose ast-grep-core, it's a strong quality signal.

Health Breakdown

Maintenance 19/25

Recency, release consistency, active ratio

Quality 14/25

Yanked ratio, deps, size, maturity, features

Community 14/20

Reverse deps, ownership, ecosystem

Popularity 7/15

Downloads, momentum, growth trend

Documentation 15/15

Docs, repo, license, metadata

Download Trend

Daily downloads ยท last 90 days
7K/day avg+242%
05K10K15K20K12/291/162/32/213/113/28

Top Dependents

Version Adoption

v0.39.9
88%
v0.40.5
6%
v0.35.0
3%
v0.5.3
2%
v0.37.0
2%

Release Timeline

172 releases1 yankedsince 2022
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2022
14
2023
60
2024
59
2025
34
2026
5
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Yanked

Feature Flags

default =["tree-sitter"]

README

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Maintainers

Dependencies
5
direct dependencies
Dependents
1.1K
crates depend on ast-grep-core

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