https://developers.cloudflare.com/workers/runtime-apis/streams/writablestreamdefaultwriter/
WritableStreamDefaultWriter ยท Cloudflare Workers docs
Use WritableStreamDefaultWriter in Workers to write data directly to a WritableStream.
cloudflare workerswritablestreamdefaultwriterdocs
https://developer.mozilla.org/en-US/docs/Web/API/WritableStreamDefaultWriter
WritableStreamDefaultWriter - Web APIs | MDN
The WritableStreamDefaultWriter interface of the Streams API is the object returned by WritableStream.getWriter() and once created locks the writer to the...
web apiswritablestreamdefaultwritermdn