/**
 * Given an array and a number N, return a new array which contains every nTh
 * element of the input array. For n below 1, an empty array is returned.
 * For n equal to 1, the input array is returned as is.
 * For n greater than the length of the array, an array containing the first element
 * and every nTh element after that (if any) is returned.
 *
 * @param array An input array.
 * @param n A number specifying which elements to take.
 * @returns The result array of the same type as the input array.
 */
export declare function getEveryNth<Type>(array: ReadonlyArray<Type>, n: number): ReadonlyArray<Type>;