publish.yml

name: Publish package

on:
  push:
    branches:
      - master
  workflow_dispatch:

permissions:
  contents: read
  id-token: write

concurrency:
  group: publish-${{ github.ref }}
  cancel-in-progress: false

jobs:
  publish:
    runs-on: ubuntu-latest
    steps:
      - name: Check out repository
        uses: actions/checkout@v5

      - name: Set up Bun
        uses: oven-sh/setup-bun@v2
        with:
          bun-version: 1.2.22

      - name: Set up Node.js
        uses: actions/setup-node@v4
        with:
          node-version: 24
          registry-url: https://registry.npmjs.org

      - name: Install dependencies
        run: bun install --frozen-lockfile

      - name: Build package
        run: bun run build

      - name: Check if version is already published
        id: published
        shell: bash
        run: |
          set -euo pipefail
          package_name="$(node -p "require('./package.json').name")"
          package_version="$(node -p "require('./package.json').version")"
          version_exists="$(node -e "const https = require('node:https'); const url = 'https://registry.npmjs.org/' + encodeURIComponent(require('./package.json').name); https.get(url, (response) => { if (response.statusCode === 404) { console.log('false'); response.resume(); return; } if (response.statusCode !== 200) { console.error('Unexpected registry status:', response.statusCode); process.exit(1); } let data = ''; response.on('data', (chunk) => data += chunk); response.on('end', () => { const metadata = JSON.parse(data); console.log(Boolean(metadata.versions && metadata.versions[require('./package.json').version])); }); }).on('error', (error) => { console.error(error); process.exit(1); });")"
          echo "package_name=${package_name}" >> "$GITHUB_OUTPUT"
          echo "package_version=${package_version}" >> "$GITHUB_OUTPUT"
          echo "version_exists=${version_exists}" >> "$GITHUB_OUTPUT"

      - name: Publish to npm
        if: steps.published.outputs.version_exists != 'true'
        run: npm publish --access public --provenance

      - name: Report skipped publish
        if: steps.published.outputs.version_exists == 'true'
        run: echo "${{ steps.published.outputs.package_name }}@${{ steps.published.outputs.package_version }} is already published; skipping."