/**
 * verify value if undefined or null
 */
export declare function isDefined(value: any): boolean;
/**
 * Format translation string, e.g. 'No custom buckets specified for {0}'
 */
export declare function format(message: string, args: any[]): string;
export declare function mergeObject(a: any, b: any): Object;
export declare function equals(o1: any, o2: any): boolean;
export declare function Mixin(baseCtors: Function[], data?: any): (derivedCtor: Function) => void;
/**
 * Returns the culture language code name from the browser, e.g. "de-DE"
 * @returns string
 */
export declare function getBrowserCultureLang(): string;