enum CompressionFormat {
  "deflate",
  "deflate-raw",
  "gzip",
};

[Exposed=*]
interface CompressionStream {
  constructor(CompressionFormat format);
};
CompressionStream includes GenericTransformStream;

[Exposed=*]
interface DecompressionStream {
  constructor(CompressionFormat format);
};
DecompressionStream includes GenericTransformStream;