Introduction to TypeScript(Edited). pptx

TypeScript is a powerful programming language developed by Microsoft that extends JavaScript with optional static typing. It helps developers write clean, maintainable, and error-free code by catching issues at compile time rather than runtime. TypeScript supports modern JavaScript features, object-oriented programming, and strong tooling with IDEs, making development faster and more reliable. It compiles down to plain JavaScript, so it can run anywhere JavaScript runs—whether in the browser or on Node.js. Widely used in large projects, TypeScript improves scalability, code readability, and developer productivity. With growing popularity, it has become a go-to language for modern web development.

1. Introduction to TypeScript This tutorial serves as a comprehensive introduction to TypeScript, a robust programming language that enhances JavaScript by adding type safety. It is tailored for beginner to intermediate developers who are eager to improve their coding skills and understand the benefits of using TypeScript for more reliable and maintainable code. Address: G-13, 2nd Floor, Sector-3, Noida, Uttar Pradesh, 201301, India Email: [email protected] Phone: [phone] ✅ https://www.tpointtech.com/typescript-tutorial

2. Introduction to TypeScript What is TypeScript? TypeScript is a strict syntactical superset of JavaScript that adds optional static typing, developed by Microsoft. Why Use TypeScript? It improves code quality and maintainability through static type checking, preventing runtime errors. Basic Setup Install Node.js and TypeScript via npm, configure your environment, and compile TypeScript files.

3. Types and Interfaces in TypeScript Primitive Types TypeScript supports string, number, boolean, null, undefined, and symbol, enforcing type checks. 1 2 3 Arrays and Tuples Arrays can be typed using type[] or Array<type>; tuples allow fixed-size arrays of different types. Interfaces Interfaces define the shape of objects, creating contracts for consistency across implementations.

4. Functions and Class Syntax Function Types Functions can have type annotations for parameters and return values, reducing errors. Optional and Default Parameters Use ? for optional parameters and set default values for flexibility. Classes and Inheritance TypeScript supports classes with constructors, properties, methods, and inheritance.

5. Advanced Types in TypeScript Union and Intersection Types Union types allow variables to hold multiple types, while intersection types combine types, offering flexible type constraints. Type Assertions Type assertions enable you to override inferred types and specify a different type based on your knowledge. Type Guards Type guards are checks that narrow down variable types at runtime, enhancing type safety.

6. Understanding Generics What are Generics? Generics allow you to create reusable components that work with any type. 1 2 3 Using Generics in Functions Define a type parameter to create flexible, reusable functions. Generics in Classes Generics can be applied in class definitions for modular code.

7. Modules and Namespaces in TypeScript 1 Understanding Modules TypeScript modules are individual files that export code to be used in other files, providing better organization and encapsulation of code, which promotes maintainability. 2 Importing and Exporting Use export and import keywords to share classes, interfaces, and functions between different files, facilitating modular programming and collaboration among developers. 3 Namespaces Namespaces in TypeScript help to group related code into a single entity, avoiding name conflicts and allowing for better structuring of larger applications.

8. Tooling and Best Practices TypeScript Compiler (tsc) Understanding its configuration options helps improve build processes. Linting and Formatting ESLint and Prettier help maintain code quality and enforce styles. Testing in TypeScript Incorporating Jest ensures the reliability of your TypeScript code.