TypeScript - type checker for JavaScript

This course is designed for JavaScript developers who want to learn how to use typescript for static type checking of JavaScript code. Students are expected to know JavaScript at the level of the course [JS_PROG2]

• Basic data types, including any, uknown, and never
• Enumeration
• Object types
• Union and intersection types
• Functional types
• Classes and interfaces

• JavaScript at the course level [JS_PROG2]

Introduction

• What is TypeScript
• The development environment
• Compiler and its configuration

TypeScript type system

• Type annotations
• what is the structural type system
• primitive types
  • null and undefined
  • any, unknown, never
  • BigInt and Symbol
• type aliases
• Object types
  • arrays
  • intersection
• value (literal) types
• enumerations

Type narrowing

• value assignment
• typeof as type guard
• operator narrowing ===
• operator in
• operator instanceof
• type predicates
• type assertions
• type never and exhaustiveness check

Function type annotations

• parameters and return values, void type
• generic functions
• overloading
• Libraries and type "unknown"

OOP

• Classes, properties and constructors
• Interfaces
• Inheritance
• Encapsulation
• Overriding
• Static methods
• Generic classes

Type arithmetic

• Generic types
• keyof
• typeof in type definition
• indexer in type definition
• conditional typing
• mapped types

Previous courses

JS_PROG1 - JavaScript I: Basics [JS_PROG1]

JavaScript II: Advanced techniques [JS_PROG2]

Next courses

Introduction to Vue.js [JS_VUE1]

Creating JS applications using the WebSocket protocol [JS_WEBSOCKET]

jQuery Framework [JS_JQUERY]

Automated testing of JS applications using the Jest library [JS_TEST_JEST]

Introduction to the Svelte framework [JS_SVELTE1]

Introduction to Solid.js framework [JS_SOLID1]

DOM in JavaScript I: Basics [JS_DOM1]

DOM in JavaScript II: Advanced Techniques [JS_DOM2]

Angular II: Advanced techniques [JS_ANGULAR2]

Asynchronous and reactive programming in JavaScript [JS_ASYNC]

Creating backend applications using Express.js [JS_EXPRESS1]

React I: Basics [JS_REACT1]

React II: Advanced techniques [JS_REACT2]

Redux and its implementation in Angular and React applications [JS_REDUXJS1]

Angular I: Basics [JS_ANGULAR1]

Communication with server using AJAX and Fetch API [JS_AJAX]