import { ControlType, FieldBase, FieldBaseOptions } from './field-base';
export declare type FileType = 'image';
export interface FileUploadGroupFieldOptions extends FieldBaseOptions {
    fileType: FileType;
    uploadUrl: string;
    numFiles: number;
}
export declare class FileUploadGroupField extends FieldBase<string[]> {
    readonly controlType: ControlType;
    fileType: FileType;
    uploadUrl: string;
    numFiles: number;
    constructor(options: FileUploadGroupFieldOptions);
}