export declare enum NODE_TYPES {
    STRING = "string",
    NUMBER = "number",
    ARRAY = "object",
    OBJECT = "object"
}
export declare const checkExpr: (expr: string) => "+" | "-" | "*" | "/" | "=" | "<" | ">" | "<=" | ">=" | "==" | "!=" | null;
export declare const checkExist: (anything: any) => boolean;
declare const executeExpr: (exprE: string, arg1: string | number, arg2?: string | number | undefined) => string | number;
export default executeExpr;