Lint commit messages

Demo generated with svg-term-cli

cat docs/assets/commitlint.json | svg-term --out docs/assets/commitlint.svg --frame --profile=Seti --height=20 --width=80

• 🚓 Be a good commitizen
• 📦 Share configuration via npm
• 🤖 Tap into conventional-changelog

• What is commitlint
  • Benefits using commitlint
• Getting started
• CLI
• Config
• Shared configuration
• API
• Tools
• Roadmap
• Version Support
• Related projects
• License
• Development
  • Install and run
  • Publishing a release

commitlint checks if your commit messages meet the conventional commit format.

In general the pattern mostly looks like this:

type(scope?): subject  #scope is optional; multiple scopes are supported (current delimiter options: "/", "\" and ",")

Real world examples can look like this:

chore: run tests on travis ci

fix(server): send cors headers

feat(blog): add comment section

Common types according to commitlint-config-conventional (based on the Angular convention) can be:

• build
• ci
• chore
• docs
• feat
• fix
• perf
• refactor
• revert
• style
• test

These can be modified by your own configuration.

• Why Use Conventional Commits?
• "The perks of committing with conventions" (Talk slides)

# Install commitlint cli and conventional config
npm install --save-dev @commitlint/{config-conventional,cli}
# For Windows:
npm install --save-dev @commitlint/config-conventional @commitlint/cli

# Configure commitlint to use conventional config
echo "module.exports = {extends: ['@commitlint/config-conventional']}" > commitlint.config.js

To lint commits before they are created you can use Husky's commit-msg hook:

# Install Husky v6
npm install husky --save-dev
# or
yarn add husky --dev

# Activate hooks
npx husky install
# or
yarn husky install

# Add hook
npx husky add .husky/commit-msg 'npx --no-install commitlint --edit "$1"'

Check the husky documentation on how you can automatically have Git hooks enabled after install for different yarn versions.

Detailed Setup instructions

• Local setup - Lint messages on commit with husky
• CI setup - Lint messages during CI builds

• Primary way to interact with commitlint.
• npm install --save-dev @commitlint/cli
• Packages: cli

• Configuration is picked up from commitlint.config.js, .commitlintrc.js, .commitlintrc.json, or .commitlintrc.yml file or a commitlint field in package.json
• Packages: cli, core
• See Rules for a complete list of possible rules
• An example configuration can be found at @commitlint/config-conventional

A number of shared configurations are available to install and use with commitlint:

• @commitlint/config-angular
• @commitlint/config-conventional
• @commitlint/config-lerna-scopes
• @commitlint/config-patternplate
• conventional-changelog-lint-config-atom
• conventional-changelog-lint-config-canonical
• commitlint-config-jira

⚠️ If you want to publish your own shareable config then make sure it has a name aligning with the pattern commitlint-config-emoji-log or commitlint-config-your-config-name — then in extend all you have to write is emoji-log or your-config-name.

• Alternative, programmatic way to interact with commitlint
• Packages:
  • format - Format commitlint reports
  • lint - Lint a string against commitlint rules
  • load - Load shared commitlint configuration
  • read - Read commit messages from a specified range or last edit
• See API for a complete list of methods and examples

• commitizen adapter
• prompt

Ideas: conventional-changelog/commitlint#94

commitlint is considered stable and is used in various projects as development tool.

We identify ease of adoption and developer experience as fields where there is room and need for improvement. The items on the roadmap should enhance commitlint regarding those aspects.

• Adoption: Provide reusable Travis CI integration: @commitlint/travis-cli (https://github.com/conventional-changelog/commitlint/releases/tag/v5.1.0)
• DX: Support PR squash scenario via ahmed-taj/commitlint-bot and @commitlint/travis-cli
• Adoption: Make ahmed-taj/commitlint-bot configurable via commitlint configuration
• Adoption: Create commitlint init
• DX: Extend the configuration schema to allow for additional fields (descriptions, examples, fixes) on both the rule and value level
• DX: Incorporate an extended version of lennym/commit-template deducing a template from commitlint configuration
• DX: Rewrite @commitlint/prompt for better usability (might involve a lot of yak-shaving)

• Node.js LTS >= 10.21.0
• git >= 2.13.2

• conventional-changelog – Generate a changelog from conventional commit history
• commitizen – Simple commit conventions for internet citizens
• create-semantic-module – CLI for quickly integrating commitizen and commitlint in new or existing projects

Copyright by @marionebl. All commitlint packages are released under the MIT license.

commitlint is developed in a mono repository.

git clone git@github.com:conventional-changelog/commitlint.git
cd commitlint
yarn
yarn run build # run build tasks
yarn start # run tests, again on change

For more information on how to contribute please take a look at our contribution guide.

Before publishing a release do a yarn run publish --dry-run to get the upcoming version and update the version in the should print help test.
Commit that change before creating the new version without --dry-run.

npm login

yarn clean
yarn install
yarn run build
yarn test
yarn run publish --otp <one-time password>

npm login

yarn clean
yarn install
yarn run build
yarn test
npx lerna publish --conventional-commits --dist-tag next --otp <one-time password>

If for some reason this stops in between, you can manually publish missing packages like this:

npm publish <package-name> --tag next --otp <one-time password>

npm login

npx lerna exec --no-bail --no-private --no-sort --stream -- '[ -n "$(npm v . dist-tags.next)" ] && npm dist-tag add ${LERNA_PACKAGE_NAME}@$(npm v . dist-tags.next) latest --otp <one-time password>'

Remove next:

npx lerna exec --no-bail --no-private --no-sort --stream -- '[ -n "$(npm v . dist-tags.next)" ] && npm dist-tag rm ${LERNA_PACKAGE_NAME} next --otp <one-time password>'