typescript

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

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

Utility Types

// 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