# Typescript

> TypeScript configuration, strict mode, generics, and type utilities. Use when this capability is needed.

- Skill: `tomevault-io/typescript-9` (Agent Skill, multi-file: 2 files)
- Install (CLI): `npx skillmds@latest add tomevault-io/typescript-9`
- Raw SKILL.md: https://api.skillmd.com/api/skills/tomevault-io/typescript-9/raw
- Safety review: pending (external: skill-scanner PASS, skillspector PASS)
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Coding & Dev Tools
- Author: tomevault-io (https://skillmd.com/u/tomevault-io)
- Updated: 2026-09-17
- Page: https://skillmd.com/skills/tomevault-io/typescript-9

---


# TypeScript Skill

Expert assistance for TypeScript configuration and patterns.

## Capabilities

- Configure tsconfig
- Implement strict typing
- Create utility types
- Handle generics
- Design type-safe APIs

## Configuration

```json
// tsconfig.json
{
  "compilerOptions": {
    "strict": true,
    "noUncheckedIndexedAccess": true,
    "exactOptionalPropertyTypes": true,
    "noImplicitReturns": true,
    "noFallthroughCasesInSwitch": true,
    "moduleResolution": "bundler",
    "esModuleInterop": true,
    "skipLibCheck": true
  }
}
```

## Utility Types

```typescript
// Extract, Omit, Pick
type UserWithoutPassword = Omit<User, 'password'>;

// Conditional types
type NonNullable<T> = T extends null | undefined ? never : T;

// Mapped types
type Readonly<T> = { readonly [P in keyof T]: T[P] };
```

## Target Processes

- typescript-setup
- type-safety
- api-design

---
> Converted and distributed by [TomeVault](https://tomevault.io/claim/a5c-ai) — claim your Tome and manage your conversions.
<!-- tomevault:4.0:skill_md:2026-04-16 -->