From claude-mods
Searches codebases by AST structure using ast-grep to find semantic patterns like function calls, React hooks, imports, async code, and anti-patterns. Use for locating usages, refactoring, and issue detection.
npx claudepluginhub 0xdarkmatter/claude-modsThis skill is limited to using the following tools:
Search code by its abstract syntax tree (AST) structure. Finds semantic patterns that regex cannot match reliably.
Creates isolated Git worktrees for feature branches with prioritized directory selection, gitignore safety checks, auto project setup for Node/Python/Rust/Go, and baseline verification.
Executes implementation plans in current session by dispatching fresh subagents per independent task, with two-stage reviews: spec compliance then code quality.
Dispatches parallel agents to independently tackle 2+ tasks like separate test failures or subsystems without shared state or dependencies.
Search code by its abstract syntax tree (AST) structure. Finds semantic patterns that regex cannot match reliably.
| Tool | Command | Use For |
|---|---|---|
| ast-grep | sg -p 'pattern' | AST-aware code search |
| Pattern | Matches | Example |
|---|---|---|
$NAME | Named identifier | function $NAME() {} |
$_ | Any single node | console.log($_) |
$$$ | Zero or more nodes | function $_($$$) {} |
# 1. Find console.log calls
sg -p 'console.log($_)'
# 2. Find React hooks
sg -p 'const [$_, $_] = useState($_)'
sg -p 'useEffect($_, [$$$])'
# 3. Find function definitions
sg -p 'function $NAME($$$) { $$$ }'
sg -p 'def $NAME($$$): $$$' --lang python
# 4. Find imports
sg -p 'import $_ from "$_"'
sg -p 'from $_ import $_' --lang python
# 5. Find async patterns
sg -p 'await $_'
sg -p 'async function $NAME($$$) { $$$ }'
# 6. Find error handling
sg -p 'try { $$$ } catch ($_) { $$$ }'
sg -p 'if err != nil { $$$ }' --lang go
# 7. Find potential issues
sg -p '$_ == $_' # == instead of ===
sg -p 'eval($_)' # Security risk
sg -p '$_.innerHTML = $_' # XSS vector
# 8. Preview refactoring
sg -p 'console.log($_)' -r 'logger.info($_)'
# 9. Apply refactoring
sg -p 'var $NAME = $_' -r 'const $NAME = $_' --rewrite
# 10. Search specific language
sg -p 'pattern' --lang typescript
| Task | Command |
|---|---|
| Find pattern | sg -p 'pattern' |
| Specific language | sg -p 'pattern' --lang python |
| Replace (preview) | sg -p 'old' -r 'new' |
| Replace (apply) | sg -p 'old' -r 'new' --rewrite |
| Show context | sg -p 'pattern' -A 3 |
| JSON output | sg -p 'pattern' --json |
| File list only | sg -p 'pattern' -l |
| Count matches | sg -p 'pattern' --count |
| Run YAML rules | sg scan |
For complete patterns, load:
./references/js-ts-patterns.md - JavaScript/TypeScript patterns./references/python-patterns.md - Python patterns./references/go-rust-patterns.md - Go and Rust patterns./references/security-ops.md - Security vulnerability detection./references/advanced-usage.md - YAML rules and tool integration./assets/rule-template.yaml - Starter template for custom rules