type CompressionFormat = 'gzip' | 'deflate' | 'deflate-raw';
declare let CompressionStreamImpl: {
    new (format: CompressionFormat | string): {
        readable: ReadableStream<Uint8Array>;
        writable: WritableStream<Uint8Array>;
    };
};
declare let DecompressionStreamImpl: {
    new (format: CompressionFormat | string): {
        readable: ReadableStream<Uint8Array>;
        writable: WritableStream<Uint8Array>;
    };
};
export { CompressionStreamImpl as CompressionStream, DecompressionStreamImpl as DecompressionStream };
declare const _default: {
    CompressionStream: new (format: CompressionFormat | string) => {
        readable: ReadableStream<Uint8Array>;
        writable: WritableStream<Uint8Array>;
    };
    DecompressionStream: new (format: CompressionFormat | string) => {
        readable: ReadableStream<Uint8Array>;
        writable: WritableStream<Uint8Array>;
    };
};
export default _default;