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PreCommit

Pre-commit hooks framework for multi-language code quality automation. USE WHEN setting up pre-commit OR configuring git hooks OR adding linting OR code formatting OR security scanning OR Terraform validation OR Kubernetes manifests OR Helm charts OR Python linting OR JavaScript formatting. Manages .pre-commit-config.yaml, hook installation, and CI integration.

personAuthor: jakexiaohubgithub
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PreCommit

A comprehensive skill for managing pre-commit hooks - the framework for multi-language pre-commit hook management that automates code quality, formatting, linting, and security scanning.

Quick Reference

| Command | Description | |---------|-------------| | pre-commit install | Install git hooks | | pre-commit run --all-files | Run all hooks on all files | | pre-commit autoupdate | Update hooks to latest versions | | pre-commit run <hook-id> | Run specific hook |

Workflow Routing

| Workflow | Trigger | File | |----------|---------|------| | Setup | "setup pre-commit", "initialize hooks", "create config" | Workflows/Setup.md | | AddHooks | "add hook", "add linting", "add formatter", "add security" | Workflows/AddHooks.md | | Troubleshoot | "fix pre-commit", "hook failing", "debug hooks" | Workflows/Troubleshoot.md | | CIIntegration | "CI pipeline", "GitHub Actions", "GitLab CI" | Workflows/CIIntegration.md | | CustomHook | "create custom hook", "local hook", "write hook" | Workflows/CustomHook.md |

Documentation

| Document | Purpose | |----------|---------| | QuickStartGuide.md | Installation and first-time setup | | HooksReference.md | Comprehensive hook catalog by language/purpose | | ConfigurationGuide.md | Advanced configuration options | | SecurityHooks.md | Secret detection and security scanning |

Tools

| Tool | Purpose | |------|---------| | Tools/PreCommitManager.ts | CLI for managing pre-commit configurations | | Tools/HookGenerator.ts | Generate .pre-commit-config.yaml templates | | Tools/HookValidator.ts | Validate hook configurations |

Examples

Example 1: Setup pre-commit for a new project

User: "Setup pre-commit for my Python project"
→ Invokes Setup workflow
→ Creates .pre-commit-config.yaml with Python hooks (black, isort, flake8)
→ Runs pre-commit install

Example 2: Add Terraform hooks

User: "Add Terraform validation hooks"
→ Invokes AddHooks workflow
→ Adds terraform_fmt, terraform_validate, terraform_docs hooks
→ Configures tflint and checkov integration

Example 3: Add security scanning

User: "Add secret detection to pre-commit"
→ Invokes AddHooks workflow
→ Adds gitleaks, detect-secrets, trufflehog hooks
→ Configures appropriate exclusion patterns

Example 4: Debug failing hook

User: "My eslint pre-commit hook is failing"
→ Invokes Troubleshoot workflow
→ Checks hook configuration and dependencies
→ Provides fix recommendations

Supported Hook Categories

  • Python: black, isort, flake8, mypy, bandit, pyupgrade
  • JavaScript/TypeScript: prettier, eslint, biome
  • Infrastructure: terraform, terragrunt, helm, kustomize
  • Kubernetes: kubeconform, kubeval, checkov
  • Security: gitleaks, detect-secrets, trufflehog, trivy
  • General: yamllint, jsonlint, shellcheck, markdownlint