type Config = Record<string, any>;
/** Returns the object properties values, including properties values of it child objects in a string.*/
declare function toString(obj: Config, separator?: string): string;
/** Returns the object properties values, including properties values of it child objects in an array.*/
declare function toArray(obj: Config): string[];
/** Simply merges objects from source to target.
 * @NOTE Empty child objet(s) of source are ignored during the merge.
 * @param target - The target object to update
 * @param source - The source objects to merge
 * @returns The merged object
 */
declare function simpleMerge<T extends Config>(...arg: (T | Partial<T>)[]): T;
/** Strictly merges objects from source to target.
 * @NOTE Empty child objet(s) of source are not ignored during the merge.
 * @param target - The target object to update
 * @param source - The source object to merge
 * @returns The merged object
 */
declare function strictMerge<T extends Config>(...arg: (T | Partial<T>)[]): T;
/**
 * Object helper class with static methods for object manipulation.
 */
export declare abstract class Obj {
    /** Returns the object properties values,
     * including properties values of it child objects in a string.
     * */
    static readonly toString: typeof toString;
    /** Returns the object properties values,
     * including properties values of it child objects in an array.
     * */
    static readonly toArray: typeof toArray;
    static readonly merge: {
        /**
         * Merges objects from source to target ignoring empty child objects from source.
         */
        simple: typeof simpleMerge;
        /**
         * Merges objects from source to target including empty child objects from source. If a property exists in both objects, the value from the source object will be used.
         */
        strict: typeof strictMerge;
    };
}
export {};