export interface IRequestParams {
    app_id: string;
    ext_user_id: string;
    sdk: string;
    skdVersion: string;
}
export declare const getRequestParams: (appId: string, userId: string) => IRequestParams;
export declare const checkIfStringIsHexColor: (string: string) => boolean;
export declare const throwErrorIfColorStringsAreNoHexColor: (strings: (string | undefined)[]) => void;
export declare const buildQueryString: (params: Record<string, any>) => string;
export declare const deepPropsComparison: (prevProps: Record<string, any>, nextProps: Record<string, any>) => boolean;