declare const _default: (instance?: typeof import("fabric/fabric-impl")) => void;
export default _default;
declare module 'fabric' {
    namespace fabric {
        interface Canvas {
            __insertExternalElements(data: DataTransfer): void;
            __insertExternalObjects(objects: any[]): this;
        }
        interface IUtil {
            registerDataTransferType(type: string, callback: DataTransferToObject): void;
            dataTransferTypes: {
                [key: string]: DataTransferToObject;
            };
        }
    }
}
declare type DataTransferToObject = (data: DataTransferItem, canvas: fabric.Canvas) => Promise<fabric.Object[] | fabric.Object | any | undefined>;