export declare const MIN_RESUMABLE_CHUNK_SIZE: number;
export declare const DEFAULT_RESUMABLE_CHUNK_SIZE: number;
export declare const MAX_RESUMABLE_CHUNK_SIZE: number;
export interface ResumableStreamUploadOptions {
    readonly stream: ReadableStream;
    readonly sessionUrl: URL;
    readonly contentType: string;
    readonly chunkSize: number;
    readonly signal?: AbortSignal;
    readonly request: (input: URL, init: RequestInit) => Promise<Response>;
    readonly createHttpError: (response: Response) => Promise<Error>;
}
export interface ResumableStreamUploadResult {
    readonly response: Response;
    readonly size: number;
}
/** Upload an unknown-length byte stream using the GCS resumable protocol. */
export declare function uploadUnknownLengthStream(options: ResumableStreamUploadOptions): Promise<ResumableStreamUploadResult>;
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