export declare type FieldsBaseType = string | string[];
export declare type PopulateSelectBaseType = {
    select?: FieldsBaseType;
    populate?: PopulateFieldsType;
};
export declare type PopulateSelectType = {
    [K: string]: FieldsBaseType | PopulateSelectBaseType;
};
export declare type PopulateFieldsType = FieldsBaseType | PopulateSelectType;