Setup pre commit

Skill helderberto/agent-skills/skills/setup-pre-commit

My personal SDLC toolbelt for AI coding agents — PRD to ship.

Install

npx -y skills add helderberto/agent-skills --skill setup-pre-commit

Assembled from the repository path, not quoted from the project. Check it against their README if it does not work.

One thing to look at

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What its author says it does

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Set up Husky pre-commit hooks with lint-staged (Prettier), type checking, and tests. Use when user asks to "add pre-commit hooks", "setup husky", "setup pre-commit", "configure lint-staged", or wants commit-time formatting/typechecking/testing. Don't use for running linters manually or writing tests.

SKILL.md

2.9 KB, as published. Nobody here has run it

Setup Pre-Commit Hooks

What This Sets Up

Husky pre-commit hook
lint-staged running Prettier on all staged files
Prettier config (if missing)
typecheck and test scripts in the pre-commit hook (if they exist)

Workflow

Detect package manager from lock file: package-lock.json (npm), pnpm-lock.yaml (pnpm), yarn.lock (yarn), bun.lockb (bun). Default to npm if unclear.
Install devDependencies:
```
husky lint-staged prettier
```
Initialize Husky:
```
npx husky init
```
This creates .husky/ dir and adds prepare: "husky" to package.json.
Create .husky/pre-commit (no shebang needed for Husky v9+):
```
npx lint-staged
<pm> run typecheck
<pm> run test
```
Replace <pm> with detected package manager. If repo has no typecheck script in package.json, omit that line and tell the user. Same for test.

Create .lintstagedrc:

{
  "*": "prettier --ignore-unknown --write"
}

Create .prettierrc (only if no Prettier config exists):

{
  "useTabs": false,
  "tabWidth": 2,
  "singleQuote": true,
  "trailingComma": "all"
}

Verify:
- .husky/pre-commit exists and is executable
- .lintstagedrc exists
- prepare script in package.json is "husky"
- Prettier config exists
- Run npx lint-staged to confirm it works
Commit all changed/created files: Add pre-commit hooks (husky + lint-staged + prettier) This runs through the new pre-commit hooks -- a good smoke test.

Rules

Never overwrite existing Prettier config
Never overwrite existing .husky/pre-commit without asking user first
Always use detected package manager consistently
Husky v9+ doesn't need shebangs in hook files
prettier --ignore-unknown skips files Prettier can't parse (images, etc.)
Pre-commit runs lint-staged first (fast, staged-only), then full typecheck and tests

Error Handling

No package.json found -- report and stop
Existing .husky/pre-commit -- ask user before overwriting
husky init fails -- check node_modules exists, suggest running install first
npx lint-staged verification fails -- check Prettier is installed, check .lintstagedrc syntax
No typecheck or test scripts -- omit from hook, tell user which were skipped