/**
 * Returns a unique array of strings from the given array
 * @param items The array of strings to make unique
 * @since 0.13
 */
export declare function makeUnique(arr: string[]): string[];
/**
 * Indicates if the given arrays are different (content-wise)
 * @param arr
 * @param other
 * @since 0.13
 */
export declare function areArraysDifferent<T>(arr: T[] | undefined, other: T[] | undefined, equalityFn?: (left: T, right: T) => boolean): boolean;
