export declare const isUndefined: (value: any) => boolean; export declare const pick: (obj?: Object, keys?: Array) => { [k: string]: any; }; export declare const omitBy: (obj: Object, predicate: Function) => { [k: string]: any; }; export declare const debounce: (func: Function, wait: number) => (...args: any[]) => void; export declare const matches: (srcObj: Object) => (obj: Object) => boolean; export declare function getRandomHex(byte: number): string; export declare function getRandomTelemetryId(): string;