/**
 * Upload file to presigned URL with progress tracking
 *
 * Uses XMLHttpRequest for progress events (fetch doesn't support upload progress)
 */
export interface UploadProgress {
    loaded: number;
    total: number;
    percentage: number;
}
export type ProgressCallback = (progress: UploadProgress) => void;
export declare class UploadError extends Error {
    statusCode?: number | undefined;
    constructor(message: string, statusCode?: number | undefined);
}
export interface UploadOptions {
    onProgress?: ProgressCallback;
    timeout?: number;
    abortSignal?: AbortSignal;
}
/**
 * Upload file to a presigned URL with progress tracking
 *
 * @param url Presigned URL from external API
 * @param file File object to upload
 * @param options Upload options (progress callback, timeout, abort signal)
 * @returns Promise that resolves when upload completes
 */
export declare function uploadToPresignedUrl(url: string, file: File, options?: UploadOptions): Promise<void>;
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