commitlint

commitlint checks if your commit messages meets the conventional commit format

Table of Contents

• Installation
  • Releases
  • Using go
• Enable in Git Repo
• Quick Test
• Benefits of using conventional commit
  • Commit Types
• Commands
  • Custom config for each repo
  • Verify config file
• Rules
• Library
  • Config Precedence
  • Commit Message Precedence
• Default Config
• License

Installation

Releases

Download binary from releases and add it to your PATH

Using go

go install github.com/conventionalcommit/commitlint@latest

Enable in Git Repo

• enable for a single repository, cd to repository directory

  commitlint init

• enable globally for all repositories

  commitlint init --global

Quick Test

# invalid commit message
echo "fear: do not fear for commit message" | commitlint lint
# ❌ type-enum: type 'fear' is not allowed, you can use one of [feat fix docs style refactor perf test build ci chore revert merge]

# valid commit message
echo "feat: good commit message" | commitlint lint
# ✔ commit message

Benefits of using conventional commit

• Conventional Commit format. Read Full Specification here

<type>[optional scope]: <description>

[optional body]

[optional footer(s)]

• Why Use Conventional Commits

Commit Types

Commonly used commit types from Conventional Commit Types

Type	Description
feat	A new feature
fix	A bug fix
docs	Documentation only changes
style	Changes that do not affect the meaning of the code (white-space, formatting etc)
refactor	A code change that neither fixes a bug nor adds a feature
perf	A code change that improves performance
test	Adding missing tests or correcting existing tests
build	Changes that affect the build system or external dependencies
ci	Changes to our CI configuration files and scripts
chore	Other changes that don't modify src or test files
revert	Reverts a previous commit
merge	Merges a branch

Commands

Custom config for each repo

• run commitlint create config in repo root directory

  this will create commitlint.yaml in that directory, you can customise the config to your need

Verify config file

• run commitlint verify to verify if config is valid or not (according to config precedence)

• run commitlint verify --config=/path/to/conf.yamlto verify given config file

Rules

The list of available lint rules

name	argument	flags	description
header-min-length	int	n/a	checks the min length of header (first line)
header-max-length	int	n/a	checks the max length of header (first line)
body-max-line-length	int	n/a	checks the max length of each line in body
footer-max-line-length	int	n/a	checks the max length of each line in footer
type-enum	[]string	n/a	restrict type to given list of string
scope-enum	[]string	allow-empty: bool	restrict scope to given list of string
type-min-length	int	n/a	checks the min length of type
type-max-length	int	n/a	checks the max length of type
scope-min-length	int	n/a	checks the min length of scope
scope-max-length	int	n/a	checks the max length of scope
description-min-length	int	n/a	checks the min length of description
description-max-length	int	n/a	checks the max length of description
body-min-length	int	n/a	checks the min length of body
body-max-length	int	n/a	checks the max length of body
footer-min-length	int	n/a	checks the min length of footer
footer-max-length	int	n/a	checks the max length of footer
type-charset	string	n/a	restricts type to given charset
scope-charset	string	n/a	restricts scope to given charset

Library

Config Precedence

• commitlint.yaml config file in current directory
• config file passed with --config command-line argument
• default config

Commit Message Precedence

• stdin pipe stream
• commit message file passed with --message command-line argument
• .git/COMMIT_EDITMSG in current directory

Default Config

formatter: default
rules:
    header-min-length:
        enabled: true
        severity: error
        argument: 10
    header-max-length:
        enabled: true
        severity: error
        argument: 50
    body-max-line-length:
        enabled: true
        severity: error
        argument: 72
    footer-max-line-length:
        enabled: true
        severity: error
        argument: 72
    type-enum:
        enabled: true
        severity: error
        argument:
            - feat
            - fix
            - docs
            - style
            - refactor
            - perf
            - test
            - build
            - ci
            - chore
            - revert
            - merge

License

All packages are licensed under MIT License