Example
interface Name {
first: string;
second: string;
}
var name: Name;
name = {
first: 'John',
second: 'Doe'
};
name = { // Error : `second` is missing
first: 'John'
};
name = { // Error : `second` is the wrong type
first: 'John',
second: 1337
};Class implementing interface
interface Point {
x: number; y: number;
}
class MyPoint implements Point {
x: number; y: number; // Same as Point
}