import { Dictionary, ObjectIterator, ValueKeyIteratee } from 'lodash';
/**
 * Deep merges the two objects and returns a new object with the merge result.
 *
 * @param lhs - One of the objects to be merged.
 * @param rhs - Another object to be merged.
 * @param arrayMergeStrategy - Strategy used to merge the array typed fields. Union strategy is used by default to avoid
 * duplicated elements.
 * @returns A Javascrip tobject with th emerged objects.
 */
export declare function deepMergeObjects<T1, T2>(lhs: Partial<T1>, rhs: Partial<T2>, arrayMergeStrategy?: (destinationArray: unknown[], sourceArray: unknown[]) => unknown[]): T1 & T2;
/**
 * Creates an object composed of the `object` properties `predicate` returns
 * truthy for. The predicate is invoked with two arguments: (value, key).
 *
 * @param object - The source object.
 * @param predicate - The function invoked per property.
 * @returns Returns the new object.
 */
export declare function pickBy<T, S extends T>(object: Dictionary<T> | null | undefined, predicate?: ValueKeyIteratee<T>): Dictionary<S>;
/**
 * Creates an object with the same keys as object and values generated by running each own
 * enumerable property of object through iteratee. The iteratee function is
 * invoked with three arguments: (value, key, object).
 *
 * @param source - The object to iterate over.
 * @param callback - The function invoked per iteration.
 * @returns Returns the new mapped object.
 */
export declare function mapValues<T extends object, TResult>(source: T | null | undefined, callback: ObjectIterator<T, TResult>): {
    [P in keyof T]: TResult;
};
/**
 * Deeply compares two objects and returns true if they are equal.
 *
 * @param one - The first object to be compared.
 * @param two - The second object to be compared.
 * @returns True if the objects are equal, false otherwise.
 */
export declare function deepCompare(one: object, two: object): boolean;
/**
 * Return the difference between two nested objects.
 *
 * @param one - The first object to be compared.
 * @param two - The second object to be compared.
 * @returns Two objects containing the fields that are different, each one with the values of one object.
 */
export declare function deepDifference(one: object, two: object): [object, object];