std@0.139.0/streams/README.md

Deno standard library
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std/streams

Conversion

readerFromStreamReader

Creates a Reader from a ReadableStreamDefaultReader.

import {
  copy,
  readerFromStreamReader,
} from "https://deno.land/std@$STD_VERSION/streams/mod.ts";
const res = await fetch("https://deno.land");
const file = await Deno.open("./deno.land.html", { create: true, write: true });

const reader = readerFromStreamReader(res.body!.getReader());
await copy(reader, file);
file.close();

writerFromStreamWriter

Creates a Writer from a WritableStreamDefaultWriter.

import {
  copy,
  writerFromStreamWriter,
} from "https://deno.land/std@$STD_VERSION/streams/mod.ts";
const file = await Deno.open("./deno.land.html", { read: true });

const writableStream = new WritableStream({
  write(chunk): void {
    console.log(chunk);
  },
});
const writer = writerFromStreamWriter(writableStream.getWriter());
await copy(file, writer);
file.close();