/**
 * Applies the given selector to all elements of the given collection and
 * returns the min value of all elements. If an empty array is provided the
 * function will return undefined
 *
 * Example:
 *
 * ```ts
 * import { minOf } from "https://deno.land/std@$STD_VERSION/collections/mod.ts"
 * import { assertEquals } from "https://deno.land/std@$STD_VERSION/testing/asserts.ts"
 *
 * const inventory = [
 *      { name: "mustard", count: 2 },
 *      { name: "soy", count: 4 },
 *      { name: "tomato", count: 32 },
 * ];
 * const minCount = minOf(inventory, (i) => i.count);
 *
 * assertEquals(minCount, 2);
 * ```
 */
export declare function minOf<T>(array: readonly T[], selector: (el: T) => number): number | undefined;
export declare function minOf<T>(array: readonly T[], selector: (el: T) => bigint): bigint | undefined;