How do I install the TS Library skill?

Run npx skillmds@latest add tomevault-io/ts-library-2 in your terminal (requires Node.js), paste this page's agent-chat prompt into Claude, Cursor, or any MCP-connected agent, or download the SKILL.md file and copy it into your agent's skills directory.

Is TS Library safe to use?

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Which AI agents work with TS Library?

This skill is tagged as working with Claude Code, Claude.ai, OpenAI Codex. SKILL.md is an open format, so most agents that read a skills directory can load it too.

Is TS Library free to use?

Yes. Installing skills from SkillMD is free, and the skill stays under its author's original license.

Who published TS Library?

tomevault-io (@tomevault-io) published this skill. Their other Agent Skills are listed on their SkillMD profile.

TS Library by tomevault-io — Agent Skill

Name: TS Library
Author: tomevault-io

TS Library

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.

tomevault-io Updated Sep 17, 2026

File contents

TypeScript Library Development

Patterns for authoring high-quality TypeScript libraries, extracted from studying unocss, shiki, unplugin, vite, vitest, vueuse, zod, trpc, drizzle-orm, and more.

When to Use

Starting a new TypeScript library (single or monorepo)
Setting up package.json exports for dual CJS/ESM
Configuring tsconfig for library development
Choosing build tools (tsdown, unbuild)
Designing type-safe APIs (builder, factory, plugin patterns)
Writing advanced TypeScript types
Setting up vitest for library testing
Configuring release workflow and CI

For Nuxt module development: use nuxt-modules skill

Quick Reference

Working on...	Load file
New project setup	references/project-setup.md
Package exports	references/package-exports.md
tsconfig options	references/typescript-config.md
Build configuration	references/build-tooling.md
API design patterns	references/api-design.md
Type inference tricks	references/type-patterns.md
Testing setup	references/testing.md
Release workflow	references/release.md
CI/CD setup	references/ci-workflows.md

Key Principles

ESM-first: "type": "module" with .mjs outputs
Dual format: always support both CJS and ESM consumers
moduleResolution: "Bundler" for modern TypeScript
tsdown for most builds, unbuild for complex cases
Smart defaults: detect environment, don't force config
Tree-shakeable: lazy getters, proper sideEffects: false

Token efficiency: Main skill ~300 tokens, each reference ~800-1200 tokens

Converted and distributed by TomeVault — claim your Tome and manage your conversions.

---name: ts-library-2description: 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.---# TypeScript Library DevelopmentPatterns for authoring high-quality TypeScript libraries, extracted from studying unocss, shiki, unplugin, vite, vitest, vueuse, zod, trpc, drizzle-orm, and more.## When to Use- Starting a new TypeScript library (single or monorepo)- Setting up package.json exports for dual CJS/ESM- Configuring tsconfig for library development- Choosing build tools (tsdown, unbuild)- Designing type-safe APIs (builder, factory, plugin patterns)- Writing advanced TypeScript types- Setting up vitest for library testing- Configuring release workflow and CI**For Nuxt module development:** use `nuxt-modules` skill## Quick Reference| Working on... | Load file || --------------------- | ------------------------------------------------------------------ || New project setup | [references/project-setup.md](references/project-setup.md) || Package exports | [references/package-exports.md](references/package-exports.md) || tsconfig options | [references/typescript-config.md](references/typescript-config.md) || Build configuration | [references/build-tooling.md](references/build-tooling.md) || API design patterns | [references/api-design.md](references/api-design.md) || Type inference tricks | [references/type-patterns.md](references/type-patterns.md) || Testing setup | [references/testing.md](references/testing.md) || Release workflow | [references/release.md](references/release.md) || CI/CD setup | [references/ci-workflows.md](references/ci-workflows.md) |## Key Principles- ESM-first: `"type": "module"` with `.mjs` outputs- Dual format: always support both CJS and ESM consumers- `moduleResolution: "Bundler"` for modern TypeScript- tsdown for most builds, unbuild for complex cases- Smart defaults: detect environment, don't force config- Tree-shakeable: lazy getters, proper `sideEffects: false`_Token efficiency: Main skill ~300 tokens, each reference ~800-1200 tokens_---> Converted and distributed by [TomeVault](https://tomevault.io/claim/hdkiller) — claim your Tome and manage your conversions.

Frequently asked questions