npm Publishing

Key Insight

npm provenance attestations provide verifiable build integrity.

npm (Automated Publishing)

name: Publish to npm

on:
  release:
    types: [created]

permissions: {}

jobs:
  publish:
    permissions:
      contents: read
      id-token: write  # npm provenance
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11  # v4

      - uses: actions/setup-node@1e60f620b9541d16bece96c5465dc8ee9832be0b  # v4.0.3
        with:
          node-version: 20
          registry-url: https://registry.npmjs.org/

      - run: npm ci
      - run: npm publish --provenance --access public
        env:
          NODE_AUTH_TOKEN: ${{ secrets.NPM_TOKEN }}

Scorecard result: Packaging 10/10

Bonus: --provenance flag generates npm provenance attestations (similar to SLSA).

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