valia/src/schema/formats/union/types.ts

A runtime data validator in TypeScript with advanced type inference, built-in validation functions, and seamless integration for server and client environments.

import type { SetableCriteriaTemplate, ClassicTypesTemplate, GenericTypesTemplate, KeyofFormatClassicTypes,
	SetableCriteria, MountedCriteria, GuardedCriteria } from "../types";

export interface UnionSetableCriteria<
	T extends KeyofFormatClassicTypes = KeyofFormatClassicTypes
> extends SetableCriteriaTemplate<"union"> {
	union: [SetableCriteria<T>, ...SetableCriteria<T>[]];
}

export interface UnionClassicTypes<T extends KeyofFormatClassicTypes> extends ClassicTypesTemplate<
	UnionSetableCriteria<T>,
	{}
> {}

export interface UnionMountedCriteria {
	union: [MountedCriteria<SetableCriteria>, ...MountedCriteria<SetableCriteria>[]];
}

type UnionGuardedCriteria<T extends UnionSetableCriteria> = {
	[I in keyof T['union']]:
		T['union'][I] extends SetableCriteria
			? GuardedCriteria<T['union'][I]>
			: never;
}[keyof T['union']];

export interface UnionGenericTypes<T extends UnionSetableCriteria> extends GenericTypesTemplate<
	UnionMountedCriteria,
	UnionGuardedCriteria<T>
> {}