This action for Changesets creates a pull request with all of the package versions updated and changelogs updated and when there are new changesets on master, the PR will be updated. When you're ready, you can merge the pull request and publish the packages to npm manually, push the tags and then run the action to create GitHub releases with corresponding changelogs.

• version - The command to update version, edit CHANGELOG, read and delete changesets. Default to changeset version if not provided
• commit - The commit message to use. Default to Version Packages
• title - The pull request title. Default to Version Packages
• setupGitUser - Sets up the git user for commits as "github-actions[bot]". Default to true

• published - A boolean value to indicate whether a publishing is happened or not
• publishedPackages - A JSON array to present the published packages. The format is [{"name": "@xx/xx", "version": "1.2.0"}, {"name": "@xx/xy", "version": "0.8.9"}]

Create a file at .github/workflows/release.yml with the following content.

name: Release

on:
  push:
    branches:
      - master

jobs:
  release:
    name: Release
    runs-on: ubuntu-latest
    steps:
      - name: Checkout Repo
        uses: actions/checkout@v2
        with:
          # This makes Actions fetch all Git history so that Changesets can generate changelogs with the correct commits
          fetch-depth: 0

      - name: Setup Node.js 12.x
        uses: actions/setup-node@v2
        with:
          node-version: 12.x

      - name: Install Dependencies
        run: yarn

      - name: Create Release Pull Request
        uses: changesets/action@v1
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

If you need to add additional logic to the version command, you can do so by using a version script.

If the version script is present, this action will run that script instead of changeset version, so please make sure that your script calls changeset version at some point. All the changes made by the script will be included in the PR.

name: Release

on:
  push:
    branches:
      - master

jobs:
  release:
    name: Release
    runs-on: ubuntu-latest
    steps:
      - name: Checkout Repo
        uses: actions/checkout@v2
        with:
          fetch-depth: 0

      - name: Setup Node.js 12.x
        uses: actions/setup-node@v2
        with:
          node-version: 12.x

      - name: Install Dependencies
        run: yarn

      - name: Create Release Pull Request
        uses: changesets/action@v1
        with:
          # this expects you to have a npm script called version that runs some logic and then calls `changeset version`.
          version: yarn version
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

If you are using Yarn Plug'n'Play, you should use a custom version command so that the action can resolve the changeset CLI:

- uses: changesets/action@v1
  with:
    version: yarn changeset version
    ...