Nominal.tsdeclare const __nominal__type: unique symbol; export type Nominal<T, U> = T & {readonly [__nominal__type]: U}; Example.tstype UserId = Nominal<string, 'UserId'>; type PostId = Nominal<string, 'PostId'>; type OrgId = Nominal<string, 'OrgId'>; type ProjectId = Nominal<string, 'ProjectId'>; type CustomerId = Nominal<string, 'CustomerId'>; type ClientId = Nominal<string, 'ClientId'>; type projectInvitationToken = Nominal<string, 'projectInvitationToken'>; type passwordResetToken = Nominal<string, 'passwordResetToken'>; type EUR = Nominal<number, 'EUR'>; type USD = Nominal<number, 'USD'>; type Miles = Nominal<number, 'Miles'>; type Kilometers = Nominal<number, 'Kilometers'>; Back to Snippets