Prettify<Type> flattens type and makes it more readable on the hover in your IDE.
It shows what properties are included in interfaces:
interface Name {
first: string;
second: string;
}
type NameOnly = Name;
// ^? Name
type FullName = Prettify<Name>;
// ^? {first: string; second: string}It flattens intersections:
type Intersection = Name & {
address: string;
};
type IntersectionOnly = Intersection;
// ^? Name & {address: string}
type EverythingAboutPerson = Prettify<Intersection>;
// ^? {first: string; second: string; address: string}TS Playground - https://tsplay.dev/m3d51W