export interface RangeSpec {
    start: number;
    end: number;
}
export declare function createFileRangeStream(file: File, range: RangeSpec): ReadableStream<Uint8Array>;
export declare function parseRangeHeader(rangeHeader: string, fullSize: number): RangeSpec;
export interface Build206Options {
    type?: string;
    etag?: string;
    lastModified?: string;
    cacheControl?: string;
}
export declare function createRangeExtractTransform(range: RangeSpec): TransformStream<Uint8Array, Uint8Array>;
export declare function build206Response(rangeBlob: Blob, range: RangeSpec, fullSize: number, options?: Build206Options): Response;
export declare function build206ResponseFromStream(rangeStream: ReadableStream<Uint8Array>, range: RangeSpec, fullSize: number, options?: Build206Options): Response;