shelving/util/typesmodule

Advanced TypeScript utility types used internally across Shelving. Import these when you need to manipulate generic type algebra in your own code.

Types

UnionToIntersection<U>

Converts a union type into an intersection type.

import type { UnionToIntersection } from "shelving/util";

type A = { a: string };
type B = { b: number };
type AB = UnionToIntersection<A | B>; // { a: string } & { b: number }

Resolve<T>

Flattens an intersection of object types into a single readable object type. Useful for making hover tooltips and error messages readable.

import type { Resolve } from "shelving/util";

type Merged = Resolve<{ a: string } & { b: number }>;
// { a: string; b: number }