export type ObjectWithOnlyOne<K extends string, V = unknown> = {
	[P in K]: Record<P, V> & Partial<Record<Exclude<K, P>, never>> extends infer O
		? { [Q in keyof O]: O[Q] }
		: never;
}[K];

export const isObjectWithOnlyOne = <K extends string>(
	value: unknown,
	keys?: Record<string, unknown>,
): value is ObjectWithOnlyOne<K> => {
	return typeof value === 'object' &&
		value !== null &&
		!Array.isArray(value) &&
		Object.keys(value).length === 1 &&
		keys
		? Object.keys(value).every((key) => key in keys)
		: true;
};