type-fest
✓TypeScript utility types library with 180+ compile-time transformations for strict type operations, deep object manipulation, case conversions, and JSON-safe typing. Use when building type-safe APIs, config systems, state management, transforming external data schemas or when you are creating a new type.
Installation
SKILL.md
type-fest provides 180+ compile-time utility types with zero runtime overhead for production TypeScript applications. Use it when built-in TypeScript utilities are insufficient for strict type operations, deep transformations, or complex type-level programming.
Advantage over Omit: Catches typos - requires removed keys to actually exist.
Use when: Combining types where second type's properties override the first.
TypeScript utility types library with 180+ compile-time transformations for strict type operations, deep object manipulation, case conversions, and JSON-safe typing. Use when building type-safe APIs, config systems, state management, transforming external data schemas or when you are creating a new type. Source: izidorome/skills.
Facts (cite-ready)
Stable fields and commands for AI/search citations.
- Install command
npx skills add https://github.com/izidorome/skills --skill type-fest- Source
- izidorome/skills
- Category
- {}Data Analysis
- Verified
- ✓
- First Seen
- 2026-02-11
- Updated
- 2026-02-18
Quick answers
What is type-fest?
TypeScript utility types library with 180+ compile-time transformations for strict type operations, deep object manipulation, case conversions, and JSON-safe typing. Use when building type-safe APIs, config systems, state management, transforming external data schemas or when you are creating a new type. Source: izidorome/skills.
How do I install type-fest?
Open your terminal or command line tool (Terminal, iTerm, Windows Terminal, etc.) Copy and run this command: npx skills add https://github.com/izidorome/skills --skill type-fest Once installed, the skill will be automatically configured in your AI coding environment and ready to use in Claude Code or Cursor
Where is the source repository?
https://github.com/izidorome/skills
Details
- Category
- {}Data Analysis
- Source
- skills.sh
- First Seen
- 2026-02-11