TypeScript Tutorial - DevSkill Lab

Course Overview

This TypeScript course is designed for JavaScript developers who want to add type safety to their codebase. You'll learn type system fundamentals, advanced features, and how to migrate existing JavaScript projects to TypeScript.

What You'll Learn

• TypeScript basics & types
• Interfaces & type aliases
• Generics & advanced types
• Decorators & metadata
• TypeScript with React
• Migration strategies

Prerequisites

• Strong JavaScript knowledge
• ES6+ features
• Basic React knowledge
• Node.js installed

Course Modules

Module 1: TypeScript Fundamentals

12 Lessons

Learn basic types, type annotations, type inference, and TypeScript compiler configuration.

Module 2: Advanced Types

15 Lessons

Master unions, intersections, mapped types, conditional types, and utility types.

Module 3: Generics

10 Lessons

Learn to write reusable, type-safe code with generics. Understand generic constraints and variance.

Module 4: TypeScript with React

18 Lessons

Build React applications with TypeScript. Type components, hooks, and props correctly.

React Tutorial

Module 5: Decorators & Metadata

8 Lessons

Learn decorators, reflection metadata, and how to use them in TypeScript applications.

Module 6: Migration & Best Practices

12 Lessons

Migrate JavaScript projects to TypeScript. Learn best practices and common patterns.

Sample Code

// TypeScript: Generic Function Example

interface

User {

id: number;

name: string;

}

function

getById<T extends { id: number }>(

items: T[], id: number): T | undefined {

return items.find(item => item.id === id);

}

Prerequisites

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