import { PremiaConfig } from '../premia';
export interface QueryParams extends PremiaConfig {
    additionalFields?: string[];
}
export declare function addFieldsToQuery(query: string, fields: string[]): string;
export declare function addFields(_target: any, _methodName: string, descriptor: PropertyDescriptor): {
    value: (...args: any[]) => any;
    configurable?: boolean | undefined;
    enumerable?: boolean | undefined;
    writable?: boolean | undefined;
    get?(): any;
    set?(v: any): void;
};
export declare function transformToLegacyData<T>(root: T): T;