release.yml

name: Publish

# Publishes the @mettascript/* packages and their @metta-ts/* compatibility shims
# to npm with provenance (a signed link back to this repo and commit), then draws
# the GitHub release for the tag from RELEASE_NOTES.md. Runs when a v* tag is
# pushed, or on demand.
on:
  push:
    tags: ["v*"]
  workflow_dispatch:

jobs:
  publish:
    runs-on: ubuntu-latest
    permissions:
      contents: write # create the GitHub release for the tag
      id-token: write # required for npm provenance attestations
    steps:
      - uses: actions/checkout@v4
      - uses: pnpm/action-setup@v4
      - uses: actions/setup-node@v4
        with:
          node-version: 22
          registry-url: "https://registry.npmjs.org"
          cache: pnpm
      - run: pnpm install --frozen-lockfile
      - run: pnpm -r build
      - run: pnpm -r --filter "./packages/*" --filter "./compat/*" publish --access public --provenance --no-git-checks
        env:
          NODE_AUTH_TOKEN: ${{ secrets.NPM_TOKEN }}

      # The tag alone is not the release: it publishes to npm but leaves nothing on the repo's
      # releases page. Cut the release from the version's own RELEASE_NOTES.md section, so the
      # notes that ship are the ones written for the version rather than a generated commit list.
      - name: Create the GitHub release
        if: startsWith(github.ref, 'refs/tags/v')
        env:
          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        run: |
          set -euo pipefail
          version="${GITHUB_REF_NAME#v}"
          # Take the "# MeTTaScript <version>" section up to the next level-1 heading.
          awk -v want="# MeTTaScript ${version}" '
            $0 == want { inside = 1; print; next }
            inside && /^# MeTTaScript / { exit }
            inside { print }
          ' RELEASE_NOTES.md > release-notes.md
          if [ ! -s release-notes.md ]; then
            echo "RELEASE_NOTES.md has no section for ${version}" >&2
            exit 1
          fi
          gh release create "$GITHUB_REF_NAME" \
            --title "MeTTaScript ${version}" \
            --notes-file release-notes.md \
            --latest