What do you mean by interfaces? Explain them with reference to Typescript.

An interface is a syntactical contract which defines the syntax of any entity. Interfaces in Typescript define properties, methods, and events which are the members of the interface. It contains only the declaration of the members. It is responsible for deriving classes to define the members. It often helps in providing a standard structure that the deriving classes would follow. For declaring an interface, we make use of the “interface” keyword.

Syntax-

interface interface_name{

Statements;

}

Interfaces need not to be converted to JavaScript for execution. They have zero runtime JavaScript impact. Interfaces can define both the kind of keys which an array uses and the type of entry it contains.