typescript-nudge.yml

on:
  pull_request:
    paths:
      - '**.js'
      - '**.cjs'
      - '**.mjs'
      - '**.ts'
      - '**.mts'
      - '**.cts'
name: TypeScript conversion nudge
jobs:
  Nudge-to-convert-to-TypeScript-if-JavaScript-found:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v3
        with:
          fetch-depth: 0

      - name: 🔎 Get changed JavaScript files
        id: changed-javascript-files
        uses: tj-actions/changed-files@v36
        with:
          base_sha: ${{ github.event.pull_request.base.sha }}
          files: |
            **/*.js
            **/*.cjs
            **/*.mjs
      - name: 📃 List added files
        run: |
          for file in ${{ steps.changed-javascript-files.outputs.added_files }}; do
            echo "$file was added"
          done

      - name: 📃 List modified files
        run: |
          for file in ${{ steps.changed-javascript-files.outputs.modified_files }}; do
            echo "$file was modified"
          done

      - name: 💬 Post comment to nudge contributor(s) to consider converting files to TypeScript
        if:
          steps.changed-javascript-files.outputs.modified_files != '' ||
          steps.changed-javascript-files.outputs.added_files != ''
        uses: thollander/actions-comment-pull-request@v2
        with:
          message: |
            This pull request adds or modifies JavaScript (`.js`, `.cjs`, `.mjs`) files.
            Consider converting them to TypeScript.
          comment_tag: tsnudge
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

      - name: 🏷️ Add a label to the PR to help track how many pull requests adds or modifies JavaScript files
        if:
          steps.changed-javascript-files.outputs.modified_files != '' ||
          steps.changed-javascript-files.outputs.added_files != ''
        uses: actions-ecosystem/action-add-labels@v1
        with:
          labels: 'Adds or modifies js files'

      - name: 💬 Update the comment if JavaScript files were deleted or renamed to .ts / .tsx
        if:
          contains(github.event.pull_request.labels.*.name, 'Adds or modifies js files') &&
          steps.changed-javascript-files.outputs.modified_files == '' &&
          steps.changed-javascript-files.outputs.added_files == ''
        uses: thollander/actions-comment-pull-request@v2
        with:
          message: |
            ~This pull request adds or modifies JavaScript (`.js`, `.cjs`, `.mjs`) files. Consider converting them to TypeScript.~
            Thank you for converting JavaScript files to TypeScript 🎉"
          comment_tag: tsnudge
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

      - name: 🏷️ Remove the label if JavaScript was converted
        if:
          contains(github.event.pull_request.labels.*.name, 'Adds or modifies js files') &&
          steps.changed-javascript-files.outputs.modified_files == '' &&
          steps.changed-javascript-files.outputs.added_files == ''
        uses: actions-ecosystem/action-remove-labels@v1
        with:
          labels: 'Adds or modifies js files'