npm-package

SKILL.md

npm Package Development (Bun-First)

Build and publish npm packages using Bun as the primary runtime and toolchain, producing output that works everywhere npm packages are consumed.

When to Use This Skill

Use when:

Creating a new npm library package from scratch

Setting up build/test/lint tooling for an existing package

Fixing CJS/ESM interop, exports map, or TypeScript declaration issues

Publishing a package to npm

Reviewing or improving package configuration

Do NOT use when:

Building an npx-executable CLI tool (use the npx-cli skill)

Building an application (not a published package)

Working in a monorepo (this skill targets single-package repos)

Toolchain