/**
 * Finds all of the unique items in an array.
 * @param arr The array to extract unique values from
 * @returns An array with one copy of each unique item in `arr`
 */
export declare function unique(arr: Array<any>): any[];
export declare function deepCopy(obj: any): any;
/**
 * Merges two objects, recursively.
 * @param obj1 Object to merge
 * @param obj2 Object to merge
 */
export declare function deepMerge(obj1: any, obj2: any): any;