blob: d1b7977865cbed1cd73052ae7e6f099ffbe461bb (
plain)
1
2
3
4
5
6
7
8
9
10
11
|
/**
* Nominal / branded type: compile-time-only tag to distinguish otherwise
* structurally-equal types.
*
* type PersonId = Brand<string, 'PersonId'>
* type RelId = Brand<string, 'RelationshipId'>
*
* PersonId and RelId are still strings at runtime but aren't assignable
* to each other without an explicit cast.
*/
export type Brand<T, B extends string> = T & { readonly __brand: B }
|
