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std/io/streams.ts

Deno standard library
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// Copyright 2018-2020 the Deno authors. All rights reserved. MIT license.
export function fromStreamWriter( streamWriter: WritableStreamDefaultWriter<Uint8Array>,): Deno.Writer { return { async write(p: Uint8Array): Promise<number> { await streamWriter.ready; await streamWriter.write(p); return p.length; }, };}
export function fromStreamReader( streamReader: ReadableStreamDefaultReader<Uint8Array>,): Deno.Reader { const buffer = new Deno.Buffer();
return { async read(p: Uint8Array): Promise<number | null> { if (buffer.empty()) { const res = await streamReader.read(); if (res.done) { return null; // EOF }
await Deno.writeAll(buffer, res.value); }
return buffer.read(p); }, };}