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ast-grep-setup

Set up ast-grep for a codebase with common TypeScript rules for detecting anti-patterns, enforcing best practices, and preventing bugs. Creates sgconfig.yml, rule files, and rule tests. Use when adding structural linting, banning legacy patterns, or implementing ratchet gates.

skills/ast-grep-setup/SKILL.md

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# ast-grep Setup Skill

Set up ast-grep with common TypeScript rules for detecting anti-patterns, enforcing best practices, and preventing bugs.

## When to Use

- Adding structural linting to a TypeScript codebase
- Banning legacy patterns after migration
- Implementing ratchet gates (block new violations while grandfathering existing ones)
- Enforcing architecture boundaries
- Preventing common TypeScript/JavaScript bugs

## CRITICAL: Read YAML Structure First