import { RawOptionsFromRefiners } from '@fullcalendar/core';
import { ResourceSourceInput } from '@fullcalendar/resource-common';

type Unpacked<T> = T extends (infer U)[] ? U : T;

/**
 * The `ResourceFunc` type is not exported since v5 of fullcalendar. This
 * hack here works around that by extracting the `ResourceFunc`.
 */
export type ResourceFunc = Extract<ResourceSourceInput, (...args: any) => any>;

/**
 * The `ResourceInput` type is not exported since v5 of fullcalendar. This
 * hack here works around that by extracting the `ResourceInput`.
 */
export type ResourceInput = Unpacked<Exclude<ResourceSourceInput, string | ResourceFunc | RawOptionsFromRefiners<any>>>;