export declare function set(obj: any, path: string, value: any): any;
export declare function newProxy(): any;
export declare class RefObj<T> {
    v: T;
    constructor(v: T);
}
export declare function isObject(value: any): boolean;
export declare function clone<T>(obj: T): T;
export declare function isBoolean(value: any): boolean;
export declare function isValidNumber(num: number): boolean;
export declare function isStringNumber(str: string): boolean;