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    Beginners Guide to TypeScript

    Welcome:

    Start Here

    Chapter 1:

    Getting Started With TypeScript

    • Introduction
    • What is TypeScript?
    • JavaScript vs. TypeScript Example
    • Untyped JavaScript
    • Catching Errors with Types
    • Why Should I Use TypeScript?

    Chapter 2:

    Setting Up Your TypeScript Development Environment

    • Setting up your development environment
    • Code editor
    • Node.js and npm
    • Getting Started
    • Initialize package.json
    • Install TypeScript
    • Install ts-node
    • Initialize tsconfig.json

    Chapter 3:

    Planning Our First TypeScript Application: FinanceMe

    • Building FinanceMe
    • Planning FinanceMe
    • Example Usage
    • Class Diagram of FinanceMe

    Chapter 4:

    Classes in TypeScript: User and Expense

    • TypeScript Classes
    • Expense Class

    Chapter 5:

    Generating Unique Ids

    • Generating Unique Ids For Each Expense
    • Add genUniqueId to Expense
    • Putting It Together

    Chapter 6:

    Generating the Budget Class

    • Budget Class
    • Five New Methods
    • Category enum
    • Grouping Expenses in a Budget
    • Putting It Together

    Chapter 7:

    Tracking Expenses by Month and Users

    • TrackedMonth Class
    • User Class
    • Conclusion

    Chapter 8:

    TypeScript Language Features

    • Introduction
    • Type Alias
    • Primitive Types
    • Number
    • Number Literal Types
    • Numeric Separators
    • String
    • String Literal Types
    • Boolean
    • null and undefined
    • void

    Chapter 9:

    Lists with Arrays and Tuples

    • Arrays
    • Tuples
    • Optional Elements

    Chapter 10:

    Enums are for named constants

    • Enums
    • Enums have a value
    • Reverse Mappings

    Chapter 11:

    Typing Objects

    • Object Types
    • The object type
    • Typing object properties
    • Optional properties

    Chapter 12:

    Union Types, Discriminated Unions, and Type Guards

    • Union Types Denote "or"
    • Discriminated Unions
    • Type Guards

    Chapter 13:

    Intersection Types

    • Intersection Types Express "and"
    • Optional Properties are Optional
    • Shared Properties are Intersections

    Chapter 14:

    Typing Functions - The Basics

    • Functions
    • Annotating Functions
    • Optional Parameters
    • Default Parameters
    • Rest Parameters

    Chapter 15:

    Typing Functions with Overloading, Values, and Arrow Functions

    • Overloading
    • Functions as values
    • Arrow functions

    Chapter 16:

    Imports and Exports with TypeScript Modules

    • TypeScript Modules
    • Named Exports and Imports
    • Default Exports and Imports

    Chapter 17:

    Compiling TypeScript to JavaScript

    • Compiling to JavaScript
    • Compiler Options

    Chapter 18:

    ES2015 and TypeScript

    • ES2015
    • What We'll Cover Next

    Chapter 19:

    let and const in TypeScript

    • let and const
    • TypeScript Considerations

    Chapter 20:

    Enhanced Object Literals

    • Enhanced Object Literals
    • Shorthand for property names
    • Shorthand for method names
    • Computed property names
    • TypeScript Considerations

    Chapter 21:

    Destructuring Assignment

    • Destructuring Assignment
    • Destructuring Arrays
    • Destructuring Objects

    Chapter 22:

    Nested Destructuring

    • Nested Destructuring
    • TypeScript Considerations

    Chapter 23:

    Spread Operator

    • Spread Operator
    • Spreading Arrays
    • Spreading Objects
    • TypeScript Considerations

    Chapter 24:

    Object Oriented TypeScript

    • Introduction
    • OOP Concepts in TypeScript
    • Encapsulation
    • Information Hiding

    Chapter 25:

    Inheritance and Composition

    • Inheritance and Composition in TypeScript
    • Benefits of Inheritance
    • Where Inheritance Fails
    • Favor Composition

    Chapter 26:

    Abstraction and Polymorphism

    • Abstraction with Interfaces
    • Using Polymorphism
    • Understanding Abstract Classes
    • Conclusion

    Chapter 27:

    Object Oriented in Practice with BufferUnderflow

    • Introduction
    • Code Examples