export declare function isPlainObject(obj: any): boolean;
export declare const randomString: () => string;
export declare const splitList: (list?: any[]) => any[];
export declare const toRem: (px: number) => number;
export declare const px2hd: (px?: number) => number;
export declare const isJSONString: (str: string) => boolean;
export declare const getSearchObj: (url?: string) => any;
export declare const getOpacityColor: (color: any, opacity: any) => string;
export declare const getReverseColor: (color: any) => string;
export declare const transformFileToDataUrl: (file: any) => Promise<unknown>;
export declare function findMinMaxValue(data: any[], type?: string): {
    maxValue: number;
    minValue: number;
};
export declare function findMaxDifference(data: any[], type?: string, groupsType?: string): {
    maxGroup: null;
    maxDifference: number;
};
export declare function customRound(number: number): number;
export declare function formatNumber(num: any): number;