typescript - SKILL.md Agent Skill

name: typescript description: TypeScript typed superset of JavaScript for safer, more maintainable code license: MIT compatibility: opencode metadata: audience: developers category: programming-languages

What I do

Write type-safe TypeScript code
Use generics for reusable types
Create interfaces and type aliases
Implement advanced utility types
Configure tsconfig for projects
Handle strict null checking

When to use me

When building JavaScript applications that need type safety and better tooling.

Basic Types

let name: string = "John";
let age: number = 30;
let isActive: boolean = true;
let numbers: number[] = [1, 2, 3];
let anything: any = "hello";
let unknown: unknown = "world";

function log(): void { }
function fail(): never { throw new Error(); }

Interfaces & Types

interface User {
  id: number;
  name: string;
  email?: string;
  readonly createdAt: Date;
}

type Status = "pending" | "active" | "disabled";
type ID = string | number;

Functions

function greet(name: string): string {
  return `Hello, ${name}`;
}

const add = (a: number, b: number): number => a + b;

function createUser(name: string, age?: number = 18): User {
  return { name, age };
}

Generics

function identity<T>(value: T): T {
  return value;
}

interface Box<T> {
  value: T;
}

Utility Types

type PartialUser = Partial<User>;
type UserPreview = Pick<User, "id" | "name">;
type UserWithoutPassword = Omit<User, "password">;