export declare type DataType = 'str' | 'number' | 'currency' | 'int' | 'date' | 'time' | 'datetime' | 'percent' | 'bool' | 'ref';
export declare const DataType: {
    str: DataType;
    num: DataType;
    currency: DataType;
    int: DataType;
    date: DataType;
    time: DataType;
    datetime: DataType;
    percent: DataType;
    bool: DataType;
    ref: DataType;
    isNumeric(dt: DataType): boolean;
    isDate(dt: DataType): boolean;
};
export declare type DataAgg = 'sum' | 'min' | 'max' | 'avg' | 'count';
export declare const DataAgg: {
    sum: DataAgg;
    min: DataAgg;
    max: DataAgg;
    avg: DataAgg;
    count: DataAgg;
};
export declare type SortDir = 'asc' | 'desc';
export declare const SortDir: {
    asc: SortDir;
    desc: SortDir;
};
export declare type CompareMethod = '=' | '>' | '<' | '<>' | '>=' | '<=';
export declare const CompareMethod: {
    eq: CompareMethod;
    gt: CompareMethod;
    lt: CompareMethod;
    ge: CompareMethod;
    le: CompareMethod;
    ne: CompareMethod;
};