type KeysWhereValueIsPropertyKey<T> = keyof {
    [Key in keyof T as T[Key] extends PropertyKey ? Key : never]: Key;
};
/**
 * Matches a value based on a discriminator key
 *
 * @param value - The value to match
 * @param key - The discriminator key
 * @param options - The options to match against
 * @returns The result of the match
 */
declare function simple<T, K extends keyof T, Options extends {
    [Key in Extract<T[K], PropertyKey>]: (value: Extract<T, {
        [_ in K]: Key;
    }>) => any;
}>(value: T, key: K, options: Options): ReturnType<Options[Extract<T[K], PropertyKey>]>;

export { type KeysWhereValueIsPropertyKey, simple };