/**
 * Gets the first item of an array
 *
 * @since v0.0.1
 * @category Array
 * @template {T} - The type of the array
 * @template {TDefault} - The type of the default value
 * @param {T[]} array - The array of items
 * @param {TDefault} [defaultValue] - The default value if the item is null or undefined
 * @returns {T | TDefault}
 * @example
 * const array = [7, 25, 21, 17, 42];
 *
 * first(array)              //=> 7
 * first([], 'default')      //=> 'default'
 * first([null], 'default')  //=> 'default'
 */
export declare const first: <T = unknown, TDefault = unknown>(array: T[], defaultValue?: TDefault) => T | TDefault;