Type Alias UnionDifference<A, B>

UnionDifference: A extends B ? never : A

Get the difference of two union types.

Type Parameters

A
First union type
B
Second union type

Remarks

Produces a union of types that are in A but not in B.

Example

type A = 'a' | 'b' | 'c';
type B = 'a' | 'x';
type C = UnionDifference< A, B >;  // 'b' | 'c'