TypeScript Strict

Enforces TypeScript strict mode patterns — no any, proper generics, exhaustive checks

by communityv1.0.00 downloads~ tokens

Install to project

curl -sL https://api.freeskill.cloud/skills/typescript-strict/SKILL.md -o .claude/skills/typescript-strict/SKILL.md

Add full registry to Claude Code

/plugin marketplace add freeskill/registry

SKILL.md

---
name: TypeScript Strict
description: Enforces TypeScript strict mode patterns — no any, proper generics, exhaustive checks
tags: [coding, typescript]
author: community
version: 1.0.0
---

# TypeScript Strict

When writing or reviewing TypeScript:

- **Never use `any`** — use `unknown` and narrow, or a proper type
- **Exhaustive switches** — add a `never` default to catch missing cases
- **Prefer `type` over `interface`** for unions and mapped types
- **Use `satisfies`** to validate objects without widening
- **Exact optional properties** — `T | undefined` not `T?` when exactOptionalPropertyTypes is on
- **No non-null assertions** — handle null explicitly

Flag any violations and provide the corrected version.