ci: add Lefthook pre-commit hooks for auto-formatting#25
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Adds Lefthook to automatically format and lint staged files on commit: - Python: Black (format) + Flake8 (lint) on .py files - JavaScript: Biome (format) on frontend/ .js files - Optional conventional commit validation (commented out) Setup: run `npm install` — the prepare script installs hooks automatically. Contributors without Node.js can skip this; CI still catches formatting issues via the existing scripts.
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Nice one. Thanks for this. |
OrbFrontend
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May 16, 2026
ci: add Lefthook pre-commit hooks for auto-formatting
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Why
CI catches formatting/lint issues, but contributors only find out after pushing. This adds local pre-commit hooks so formatting is auto-fixed before the commit even happens.
What
Adds Lefthook — a fast, language-agnostic git hooks manager. Config in one file (
lefthook.yml), installs automatically vianpm install.Pre-commit hooks
.py).py)Hooks run in parallel and only on staged files that match — fast.
Setup
That's it. The
preparescript inpackage.jsonrunslefthook installautomatically.No Node.js?
This is fully optional. Contributors without Node.js skip
npm installand run the existingscripts/format_backend.sh/scripts/format_frontend.shmanually. CI still catches everything.Changes
package.jsonpreparescriptlefthook.yml.gitignorenode_modules/,package-lock.jsonCONTRIBUTING.mdBonus
There's a commented-out conventional commit validator in
lefthook.yml. Uncomment it to enforcetype(scope): messageformat on commit messages.