Implementing Interfaces in Classes

Type Aliases Beyond Objects

Interface vs Type Alias

Declaration Merging of Interfaces

Union Types via Type Aliases

Intersection Types with Type Aliases

Extending Interfaces with extends

Index Signatures for Dynamic Keys

Function Types with Interfaces and Aliases

Readonly Properties in Types

Optional Properties in Types

Type Aliases with the type Keyword

Declaring Interfaces for Object Shapes

Extending Multiple Interfaces

Nested Object Types

Excess Property Checks

Function Types

Implementing Interfaces in Classes

Index Signatures

Call and Construct Signatures

Optional Properties

Readonly Properties

Declaration Merging of Interfaces

Type Alias Intersections

Extending Interfaces

Interface vs Type Alias

Declaring an Interface

Combining Aliases Wrong

Recursive Structure Type

Class Implementing Interface

Literal Union Alias Case

Excess Property Check

Type Alias Cannot Merge

Function Type Alias Syntax

Extends vs Intersection

Union Type Alias

Extending an Interface

Index Signatures

Interface Declaration Merging

Declaring an Interface

Object Shape Type Alias

Construct Signatures

Function Type Interface

Index Signatures

Function Type Signatures

Interface Declaration Merging

Call Signatures

Interface Declaration Syntax

Excess Property Checks

Nested and Composed Interfaces

Type Alias for Tuples

Type Alias for Primitives and Literals

Interfaces Extending Classes

Construct Signatures

Intersection Types

When to Use Interface vs Type

Type Alias for Object Shapes

Method Signatures

Type Alias for Function Types

Classes Implementing Interfaces

Interface vs Type Alias

Extending Interfaces

Extending Multiple Interfaces