export interface ExcelFiles {
    [fileName: string]: ExcelFile;
}
export interface ExcelFile {
    [sheetName: string]: ExcelSheet;
}
export declare type ExcelSheet = any[];
export interface ExcelColumn {
    name: string;
    type: 'string' | 'number' | 'date' | 'boolean';
    index: number;
}
export declare function readExcelFiles(files: FileList, sheetRows?: number, sheets?: number, delimiter?: string, callback?: (progress: number) => void): Promise<ExcelFiles>;
export declare function uploadCSVToS3(bucket: string, files: ExcelFiles, folder: string, callback?: (progress: number) => void, useStage?: boolean): Promise<void>;
export declare function getFirstSheet(files: ExcelFiles): ExcelSheet;
export declare function downloadCSVfromS3(bucket: string, sourceFile: string, progressCallback: (progress: ProgressEvent) => void, useStage?: boolean, fileName?: string): Promise<void>;
export declare function downloadCSVfromMemory(sourceFile: string, obj: any[]): Promise<void>;
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