Module Webapi__ReadableStream
module type Reader = { ... };
module rec DefaultReader: { ... };
module rec BYOBReader: { ... };
let locked: t => bool;
let cancel: t => Js.Promise.t(unit);
let cancelWith: string => t => Js.Promise.t(string);
let getReader: t => DefaultReader.t;
let getReaderBYOB: t => BYOBReader.t;
let tee: t => (t, t);