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Complete collection of AI agent skills including: - Frontend Development (Vue, React, Next.js, Three.js) - Backend Development (NestJS, FastAPI, Node.js) - Mobile Development (React Native, Expo) - Testing (E2E, frontend, webapp) - DevOps (GitHub Actions, CI/CD) - Marketing (SEO, copywriting, analytics) - Security (binary analysis, vulnerability scanning) - And many more... Synchronized from: https://skills.sh/ Co-Authored-By: Claude <noreply@anthropic.com>
48 lines
2.4 KiB
Markdown
48 lines
2.4 KiB
Markdown
---
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name: ts-library
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description: Use when authoring TypeScript libraries - covers project setup, package exports, build tooling (tsdown/unbuild), API design patterns, type inference tricks, testing, and release workflows. Patterns extracted from 20+ high-quality ecosystem libraries.
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license: MIT
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---
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# TypeScript Library Development
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Patterns for authoring high-quality TypeScript libraries, extracted from studying unocss, shiki, unplugin, vite, vitest, vueuse, zod, trpc, drizzle-orm, and more.
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## When to Use
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- Starting a new TypeScript library (single or monorepo)
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- Setting up package.json exports for dual CJS/ESM
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- Configuring tsconfig for library development
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- Choosing build tools (tsdown, unbuild)
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- Designing type-safe APIs (builder, factory, plugin patterns)
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- Writing advanced TypeScript types
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- Setting up vitest for library testing
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- Configuring release workflow and CI
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**For Nuxt module development:** use `nuxt-modules` skill
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## Quick Reference
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| Working on... | Load file |
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| --------------------- | ------------------------------------------------------------------ |
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| New project setup | [references/project-setup.md](references/project-setup.md) |
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| Package exports | [references/package-exports.md](references/package-exports.md) |
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| tsconfig options | [references/typescript-config.md](references/typescript-config.md) |
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| Build configuration | [references/build-tooling.md](references/build-tooling.md) |
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| API design patterns | [references/api-design.md](references/api-design.md) |
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| Type inference tricks | [references/type-patterns.md](references/type-patterns.md) |
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| Testing setup | [references/testing.md](references/testing.md) |
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| Release workflow | [references/release.md](references/release.md) |
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| CI/CD setup | [references/ci-workflows.md](references/ci-workflows.md) |
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## Key Principles
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- ESM-first: `"type": "module"` with `.mjs` outputs
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- Dual format: always support both CJS and ESM consumers
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- `moduleResolution: "Bundler"` for modern TypeScript
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- tsdown for most builds, unbuild for complex cases
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- Smart defaults: detect environment, don't force config
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- Tree-shakeable: lazy getters, proper `sideEffects: false`
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_Token efficiency: Main skill ~300 tokens, each reference ~800-1200 tokens_
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