Skills setup-pre-commit

Set up Husky pre-commit hooks with lint-staged (Prettier), type checking, and tests in the current repo. Use when user wants to add pre-commit hooks, set up Husky, configure lint-staged, or add commit-time formatting/typechecking/testing.

install

source · Clone the upstream repo

git clone https://github.com/mattpocock/skills

Claude Code · Install into ~/.claude/skills/

T=$(mktemp -d) && git clone --depth=1 https://github.com/mattpocock/skills "$T" && mkdir -p ~/.claude/skills && cp -r "$T/setup-pre-commit" ~/.claude/skills/mattpocock-skills-setup-pre-commit && rm -rf "$T"

manifest: setup-pre-commit/SKILL.md

source content

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

Steps

1. Detect package manager

Check for

package-lock.json

(npm),

pnpm-lock.yaml

(pnpm),

yarn.lock

(yarn),

bun.lockb

(bun). Use whichever is present. Default to npm if unclear.

2. Install dependencies

Install as devDependencies:

husky lint-staged prettier

3. Initialize Husky

npx husky init

This creates

.husky/

dir and adds

prepare: "husky"

to package.json.

4. Create

.husky/pre-commit

Write this file (no shebang needed for Husky v9+):

npx lint-staged
npm run typecheck
npm run test

Adapt: Replace

npm

with detected package manager. If repo has no

typecheck

test

script in package.json, omit those lines and tell the user.

5. Create

.lintstagedrc

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

6. Create

.prettierrc

(if missing)

Only create if no Prettier config exists. Use these defaults:

{
  "useTabs": false,
  "tabWidth": 2,
  "printWidth": 80,
  "singleQuote": false,
  "trailingComma": "es5",
  "semi": true,
  "arrowParens": "always"
}

7. 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 verify it works

8. Commit

Stage all changed/created files and commit with message:

Add pre-commit hooks (husky + lint-staged + prettier)

This will run through the new pre-commit hooks — a good smoke test that everything works.

Notes

Husky v9+ doesn't need shebangs in hook files
```
prettier --ignore-unknown
```
skips files Prettier can't parse (images, etc.)
The pre-commit runs lint-staged first (fast, staged-only), then full typecheck and tests