import { List } from '../util/List';
import { Obj } from '../util/Obj';
import { TupleHasIndex } from '../array/TupleHasIndex';
import { Spread } from '../object/Spread';
import { Inc } from '../number/Inc';

/**
 * Merges a list of objects together into one object.
 * @see http://ramdajs.com/docs/#mergeAll
 */
export type MergeAllFn<R extends List<Obj<any>>, I extends number = 0, T = {}> =
  { 1: MergeAllFn<R, Inc[I], Spread<T, R[I]>>, 0: T }[TupleHasIndex<R, I>];