TypeScript Mastery: From Basics to Design Patterns

About Course

In the course we will analyze TypeScript from scratch, so you will only be required to have basic knowledge of JavaScript. In the course, we will not only learn all the features of TypeScript, but also practice through exercises and writing the final project – an extensible command execution utility. At the same time, an important part of the course will be design patterns, where we will study the behavioral, generative and structural patterns of object-oriented programming. And even for those who have already studied TypeScript, many sections will be useful, as they cover advanced topics that you may not have encountered so often before.

Basic and advanced TypeScript types
Working with classes and interfaces
Setting up a project to run TypeScript
Writing TypeGuards
Generics
Conditional Types and Mapped Types
Using utility types
The work of decorators
Modularity in TypeScript
Library typings
Design patterns in TypeScript
Write extensible and maintainable code using an example project

Course Content

Introduction

Why TypeScript?
Important announcement!
How is the course structured?
Project overview
Update – Course Overview
Course with a mentor

Setting up the environment

Main types

Introductory video
Project preparation
Using Types
Types in functions
Objects
Exercise – Typing an object
Arrays
Tuples
Readonly
Enums
Exercise – Typing a function
Test – Basic types

Advanced types

Introductory video
Union
Literal Types
Type Aliases
Interfaces
Types or Interfaces?
Optional
Exercise – Typing the server response
Void
Unknown
Never
Null
Cast
Type Guard
Exercise – Making a response typeguard
Asserts
Quiz – Advanced Types

Classes

Introductory video
Creating a class
Constructor
Methods
Exercise – Method Overloading
Getter and Setter
Implements
Extends
Features of inheritance
Composition versus inheritance
Property Visibility
Exercise – Making a shopping cart
Static properties
Working with this
Typing this
Abstract classes
Exercise – Making an abstract logger
Test – Classes

TypeScript compiler

Generics

Introductory video
Example of built-in generics
We write a function with generic
Exercise – Convert to String Function
Use in types
Generic limitation
Exercise – id sort function
Generic classes
Mixins
Test – Generics

Type manipulation

Introductory video
Keyof
Exercise – Writing a grouping function
Typeof
Indexed Access Types
Conditional Types
Infer
Mapped Types
Exercise – Form Validation
Template Literal Types
Test – Type Manipulations

Service types

Decorators

Introductory video
Decorator pattern
Class Decorator
Decorator Factory
Exercise – CreatedAt Decorator
Method Decorator
Exercise – Error Catching Decorator
Property Decorator
Decorator accessor
Parameter Decorator
Metadata
Decorator order
Test – Decorators

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