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The Standard Library has been moved to JSR. See the blog post for details.
function readableStreamFromReader
import { readableStreamFromReader } from "https://deno.land/std@0.191.0/streams/readable_stream_from_reader.ts";

Create a ReadableStream<Uint8Array> from a Reader.

When the pull algorithm is called on the stream, a chunk from the reader will be read. When null is returned from the reader, the stream will be closed along with the reader (if it is also a Closer).

An example converting a Deno.FsFile into a readable stream:

import { readableStreamFromReader } from "https://deno.land/std@0.191.0/streams/readable_stream_from_reader.ts";

const file = await Deno.open("./file.txt", { read: true });
const fileStream = readableStreamFromReader(file);

Parameters

reader: Reader | (Reader & Closer)
optional
options: ReadableStreamFromReaderOptions = [UNSUPPORTED]