action.yml

name: Changeset Preview
description: Generates comment on a PR showing expected version impact
inputs:
  workspace:
    description: Path to the repo checkout to read changesets from. Defaults to GITHUB_WORKSPACE.
    required: false
runs:
  using: composite
  steps:
    - name: Install dependencies
      shell: bash
      run: npm install
      working-directory: ${{ github.action_path }}
    - name: Preview version bumps
      shell: bash
      run: node ${{ github.action_path }}/preview-changeset-versions.mjs --output /tmp/changeset-preview.md
      env:
        CHANGESET_WORKSPACE: ${{ inputs.workspace }}
    - name: Post PR comment
      shell: bash
      run: |
        node ${{ github.action_path }}/upsert-pr-comment.mjs \
          --pr "${{ github.event.number }}" \
          --body-file /tmp/changeset-preview.md \
          --marker "<!-- changeset-version-preview -->"
      env:
        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}