/// <reference types="workers-types" />
export default class WritableMultipartUpload {
    private readonly multipartUpload;
    private readonly maxBodySize;
    private commands;
    uploadedParts: R2UploadedPart[];
    constructor(multipartUpload: R2MultipartUpload, maxBodySize: number);
    append(command: string): Promise<void>;
    uploadRemainingPart(): Promise<void>;
    upload(command: Uint8Array): Promise<void>;
}
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