export declare function noop(): void;
export declare function extend(to: any, _from: any): any;
export declare function traverse(data: any[], childrenKeys?: never[], fn?: typeof noop): void;
export declare function toObject(arr: any[]): {};
export declare function toArray(list: any[], start?: number): any[];
export declare function inArray(list: any[], item: any): boolean;
export declare function toNumber(val: any): any;
export declare function toString(val: any): string;
export declare function compareObjects(object0: any, object1: any): boolean;
export declare function isEmptyObject(obj: any): boolean;