precommit-check - SKILL.md Agent Skill

name: precommit-check description: "Run pre-commit checks by formatting changed files with Prettier, then running typecheck and build. Use when preparing to commit in git-based JS/TS repos with npm scripts."

Precommit Check

Overview

Format changed files, then run typecheck and build. Treat warnings as non-blocking unless a command exits nonzero.

Workflow

Confirm you are in the repo root and git is available.

Format changed files with Prettier:

affected=$(git diff --name-only --diff-filter=ACM)
if [ -n "$affected" ]; then
  git diff --name-only --diff-filter=ACM -z | xargs -0 npx prettier --write --ignore-unknown --log-level warn --
fi

Run typecheck: npm run typecheck.
Run build: npm run build.
Report results:
- Fail on any nonzero exit code.
- Ignore warnings that do not affect logic, but mention them if they appear in output.