Transform a stream into a stream where each chunk is divided by a newline, be it \n or \r\n. \r can be enabled via the allowCR option.

import { TextLineStream } from "https://deno.land/std@0.199.0/streams/text_line_stream.ts";
const res = await fetch("https://example.com");
const lines = res.body!
  .pipeThrough(new TextDecoderStream())
  .pipeThrough(new TextLineStream());