README.md

lerna-changelog action

Use lerna-changelog in GitHub action.

Useful for creating such an automatic release action.
slime-hatena/pull-request-based-release-template

Configuration

Input

Name	Description	Default
GITHUB_AUTH	(Required) Specify a token that is authorized for the repository. Usually, specify secrets.GITHUB_TOKEN.
label_settings_file_path	Specify the file path of the json file for label settings.	'./.github/semantic_versioning_label.json'
tag_from	Specify the start position to generate changelog. For example: origin/main, 4b825dc6, etc.	'4b825dc642cb6eb9a060e54bf8d69288fbee4904'
tag_to	Specify the end position to generate changelog. For example: origin/main, 4b825dc6, etc.	'origin/main'
release_title	Specify the name of the next version. If not specified, it will be "Unreleased (YYYY-MM-DD)".	''
remove_title_line	Remove the title line from the changelog.	'true'

Output

Name	Description
markdown	Generated changelog.

Example

Action settings

name: 'generate changelog'
on:
  push:
    branches:
      - main
jobs:
  changelog:
    runs-on: ubuntu-latest
    steps:
      # To reference old commits, fetch-depth: 0 is required.
      - uses: actions/checkout@v2
        with:
          fetch-depth: 0
      - uses: slime-hatena/lerna-changelog-action@main
        id: changelog
        with:
          GITHUB_AUTH: '${{ secrets.GITHUB_TOKEN }}'
          tag_from: '4b825dc642cb6eb9a060e54bf8d69288fbee4904' #empty tree
          tag_to: 'origin/main'
      - run: echo "${{steps.changelog.outputs.markdown}}"

LABEL_SETTING_FILE_PATH (./.github/semantic_versioning_label.json)

{
  // Label name : Heading text in changelog.
  "Type: Breaking Change": "Breaking Change",
  "Type: Feature": "Feature",
  "Type: Bug": "Bug fix",
  "Type: Maintenance": "Maintenance",
  "Type: Documentation": "Documentation",
  "Type: Refactoring": "Refactoring"
}

Result

#### Feature
* [#18](https://github.com/Slime-hatena/lerna-changelog-action/pull/18) chore(yarn): add lerna-changelog ([@Slime-hatena](https://github.com/Slime-hatena))

#### Maintenance
* [#1](https://github.com/Slime-hatena/lerna-changelog-action/pull/1) Bump @types/node from 14.14.9 to 15.3.0 ([@dependabot[bot]](https://github.com/apps/dependabot))
* [#2](https://github.com/Slime-hatena/lerna-changelog-action/pull/2) Bump @actions/core from 1.2.6 to 1.2.7 ([@dependabot[bot]](https://github.com/apps/dependabot))
* [#3](https://github.com/Slime-hatena/lerna-changelog-action/pull/3) Bump eslint-plugin-jest from 24.1.3 to 24.3.6 ([@dependabot[bot]](https://github.com/apps/dependabot))

#### Committers: 2
- Slime-hatena ([@Slime-hatena](https://github.com/Slime-hatena))
- [@dependabot[bot]](https://github.com/apps/dependabot)

Result with title

## Unreleased (2021-05-27)

#### Feature
* [#18](https://github.com/Slime-hatena/lerna-changelog-action/pull/18) chore(yarn): add lerna-changelog ([@Slime-hatena](https://github.com/Slime-hatena))

#### Maintenance
* [#1](https://github.com/Slime-hatena/lerna-changelog-action/pull/1) Bump @types/node from 14.14.9 to 15.3.0 ([@dependabot[bot]](https://github.com/apps/dependabot))
* [#2](https://github.com/Slime-hatena/lerna-changelog-action/pull/2) Bump @actions/core from 1.2.6 to 1.2.7 ([@dependabot[bot]](https://github.com/apps/dependabot))
* [#3](https://github.com/Slime-hatena/lerna-changelog-action/pull/3) Bump eslint-plugin-jest from 24.1.3 to 24.3.6 ([@dependabot[bot]](https://github.com/apps/dependabot))

#### Committers: 2
- Slime-hatena ([@Slime-hatena](https://github.com/Slime-hatena))
- [@dependabot[bot]](https://github.com/apps/dependabot)

Acknowledgements

• lerna/lerna-changelog
• actions/typescript-action
• actions/javascript-action