third_party/blink/renderer/modules/compression/compression_stream.idl

[
    Exposed=(Window,Worker,ShadowRealm) // TODO(crbug.com/41480387): This should be Exposed=*
] interface CompressionStream {
    [CallWith=ScriptState, RaisesException, MeasureAs=CompressionStreamConstructor] constructor(DOMString format);
    readonly attribute ReadableStream readable;
    readonly attribute WritableStream writable;
};