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name: npm-publishing description: Guidance for publishing npm packages with modern npm auth (trusted publishing/OIDC, granular tokens, 2FA) and release automation. Use when configuring GitHub Actions or other CI publish workflows, updating npm publish docs, or troubleshooting npm token/auth changes.

Npm Publishing

Overview

Use this skill to design or update npm publish workflows that align with the post-2025 token model (trusted publishing preferred, granular token fallback) and to keep release docs in sync with CI behavior.

Workflow decision

1. Prefer trusted publishing (OIDC) when CI is GitHub Actions or GitLab shared runners.
2. Use granular tokens only when OIDC is not available (self-hosted runners, unsupported CI).
3. Keep interactive publish for bootstrap/emergency only.

Trusted publishing workflow (OIDC)

• Configure npm trusted publisher for the repo + workflow filename.
• Ensure the workflow filename matches the trusted publisher setting exactly (e.g., release.yaml vs release.yml).
• Ensure workflow uses permissions: id-token: write and contents: read.
• Use npm CLI >= 11.5.1 in CI.
• Remove NODE_AUTH_TOKEN/NPM_TOKEN from publish steps so npm uses OIDC.
• Prefer npm publish with NPM_CONFIG_PROVENANCE=true or rely on npm defaults.
• Lock package settings to require 2FA and disallow tokens after OIDC is configured.

Refer to references/npm-publishing-2025.md for the full checklist and examples.

Granular token fallback

• Create a write-enabled granular token scoped to the package only.
• Keep expiration short and rotate on a schedule.
• Use NODE_AUTH_TOKEN only for npm publish and avoid storing tokens in code or build outputs.
• If package settings disallow tokens, this path will not work.

Refer to references/npm-publishing-2025.md for fallback guidance.

Repo updates to keep in sync

• package.json:
  • Add publishConfig.access = "public" for public scoped packages.
  • Add release scripts that tag + push (e.g., release:patch).
• README.md:
  • Document the tag-driven release flow.
  • Note trusted publishing setup steps and the tokenless publish policy.
• .github/workflows/*.yml:
  • Align permissions and npm version for OIDC.
  • Ensure publish job does not use secrets when OIDC is enabled.

Validation steps

• Run npm pack --dry-run to verify published contents.
• Run bun run build (or repo build command) to confirm dist is fresh.
• Confirm npm publish --dry-run behaves as expected when run locally.

Resources

references/

• references/npm-publishing-2025.md for policy shifts, decision points, and workflow examples.