node-skills

Authors GitHub Actions CI for Node projects - version matrices derived from engines, setup-node caching, pnpm setup without corepack, a fail-closed all-checks aggregator, merge_group support, concurrency. Use when the user asks to set up CI, add a Node test matrix, cache installs, or fix required checks and merge queues. Not for release/publish pipelines or dependency-update policy.

Sets up and tunes linting and formatting for Node/TypeScript projects - Biome as the one-tool option or ESLint flat config plus Prettier, rule tuning, eslintrc-to-flat and ESLint-to-Biome migrations, editor and CI wiring. Use when the user asks to set up or fix linting, formatting, ESLint, Biome, or Prettier. Not for Next.js apps, type checking, or test setup.

Configures npm package artifacts - package.json exports maps, ESM-first vs dual format decisions, tsdown/tsup bundling, publint and arethetypeswrong gates, files whitelist, engines. Use when the user asks to package a library for npm, fix consumer import or type-resolution errors, or check publish-readiness. Not for version bumps, changelogs, releases, or registry auth.

Hardens the npm supply chain - lockfile discipline, Dependabot cooldown and groups, per-package-manager install-script policy, provenance verification, npm token hygiene, SHA-pinned Actions. Use when the user asks to secure dependencies, audit npm packages, respond to a compromised dependency, or pin actions. Not for repo settings like rulesets/secret scanning, or publishing.

Tunes Next.js App Router application quality - next.config hardening, eslint-config-next flat config, strict mode and typed routes, RSC and use-client boundary hygiene, bundle analysis, image and font optimization. Use when the user asks to production-harden a Next.js app, fix hydration or use-client errors, or shrink a Next bundle. Not for generic Node linting, unit test setup, or npm packaging.

Cuts and automates npm releases - Changesets, semantic-release or release-please, npm trusted publishing (OIDC) with provenance, the first-publish bootstrap, staged publishing, changelogs and tags. Use when the user asks to release, version, publish to npm, or remove tokens from publish workflows. Not for package exports/bundling artifacts or verifying dependency provenance.

Builds unit and integration test infrastructure for Node/TS/React - Vitest or node:test selection with explicit config, v8 coverage gates that fail CI, React Testing Library, mocking discipline, flaky-test triage. Use when the user asks to set up tests, add coverage thresholds, pick a test runner, or fix a flaky test setup. Not for E2E browser suites, lint rules, or CI workflow authoring.

Configures TypeScript for Node libraries and apps - explicit strict tsconfig, module and moduleResolution choices, verbatimModuleSyntax, isolatedDeclarations, declaration emit for publishing, tsc type-check gates, incremental strictification. Use when the user asks to set up TypeScript, tighten tsconfig, or fix declaration output. Not for lint rules, bundling, or package exports resolution.