Personal notes for course: "Understanding TypeScript - 2020 Edition" by Maximilian Schwarzmüller

• Hello World in Typescript

• Boolean, Number and String Types
• Object Types
• Array Types
• Working with Tuples
• Working with Enums
• The "any" type
• Union Types
• Literal Types
• Type Aliases
• Function Return Types & "void"
• Functions as Types
• Function Types & Callbacks
• The "unknown" type
• The "never" type

• Using "Watch Mode"
• Compiling the Entire Project / Multiple Files
• Including & Excluding Files
• Setting a Compilation Target
• Understanding TypeScript Core Libs
• Working with Source Maps
• rootDir and outDir
• Stop Emitting Files on Compilation Errors

• Rest Parameters

• Creating a First Class
• The "this" keyword
• "private" and "public" Access Modifiers
• Shorthand Initialization
• Inheritance
• Overriding Properties & The "protected" Modifier
• Getters & Setters
• Static Methods & Properties
• Abstract Classes
• Singletons & Private Constructors
• A First Interface
• Using Interfaces with Classes
• Why Interfaces?
• Readonly Interface Properties
• Extending Interfaces
• Interfaces as Function Types
• Optional Parameters & Properties

• Intersection Types
• More on Type Guards
• Discriminated Unions
• Type Casting
• Index Properties
• Function Overloads
• Optional Chaining
• Nullish Coalescing

• Built-in Generics & What are Generics?
• Creating a Generic Function
• Working with Constraints
• Another Generic Function
• The "keyof" Constraint
• Generic Classes
• Generic Utility Types
• Generic Types vs Union Types

• A first class Decorator
• Working with Decorator Factories
• Building More Useful Decorators
• Adding Multiple Decorators
• Diving into Property Decorators
• Accessor & Parameter Decorators
• When Do Decorators Execute?
• Example: Creating an "Autobind" Decorator
• Validation with Decorators

Skipped

• Working with Namespaces
• Using ES Modules
• Understanding various Import & Export Syntaxes

• Mini Project

• Using JavaScript (!) Libraries with TypeScript
• Using "declare" as a "Last Resort"
• No Types Needed: class-transformer
• TypeScript-embracing: class-validator

Skipped

• Mini Project

• Mini Project