import type { UploadResult, UploadObject, UploadPromiseItem } from './types';
/**
 * Start individual upload operations and return array of promises
 * This allows tracking per-file upload progress
 *
 * @param functionKey - Configuration object containing the backend function key to filter and generate presigned URLs
 * @param objects - Array of Blob objects or Base64Object (with data and optional mimeType) to upload
 * @returns Array of individual upload promises with their associated index
 * @throws {BridgeAPIError} When filtering fails or upload encounters an error
 */
export declare const createUploadPromises: ({ functionKey, objects }: {
    functionKey: string;
    objects: UploadObject[];
}) => Promise<UploadPromiseItem[]>;
/**
 * Upload multiple objects to pre-signed URLs
 *
 * @param functionKey - Configuration object containing the backend function key to filter and generate presigned URLs
 * @param objects - Array of Blob objects or Base64Object (with data and optional mimeType) to upload
 * @returns Promise resolving to UploadResult[]
 * @throws {BridgeAPIError} When filtering fails or upload encounters an error
 */
export declare const upload: ({ functionKey, objects }: {
    functionKey: string;
    objects: UploadObject[];
}) => Promise<UploadResult[]>;
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