Detected the declaration of empty interfacesJS-0322

An empty interface is equivalent to its supertype. If the interface does not implement a supertype, then the interface is equivalent to an empty object ({}). In both cases it can be omitted.

Bad Practice

// an empty interface
interface Foo {}

// an interface with only one supertype (Bar === Foo)
interface Bar extends Foo {}

// an interface with an empty list of supertypes
interface Baz {}

Recommended

// an interface with any number of members
interface Foo {
  name: string;
}

// same as above
interface Bar {
  age: number;
}

// an interface with more than one supertype
// in this case the interface can be used as a replacement of a union type.
interface Baz extends Foo, Bar {}