repro-deno-14437.ts

import {
  iterateReader,
  readableStreamFromIterable,
} from "https://deno.land/[email protected]/streams/mod.ts";
import { createHash } from "https://deno.land/[email protected]/hash/mod.ts";

const path = "data.txt";

function toHex(digest: ArrayBuffer) {
  return [...new Uint8Array(digest)].map(x => x.toString(16).padStart(2, '0')).join('')
}

async function main() {
  Deno.writeTextFileSync(path, "abcdefghi\n".repeat(100000));

  let hash = createHash("md5")
  let iter: any;

  iter = iterateReader(await Deno.open(path));
  for await (const i of iter) {
    hash.update(i);
  }
  console.log("digest 1", toHex(hash.digest()));

  hash = createHash("md5")
  iter = readableStreamFromIterable(iterateReader(await Deno.open(path)));
  for await (const i of iter) {
    hash.update(i);
  }
  console.log("digest 2", toHex(hash.digest()));

  let bytes: any;

  bytes = await new Response(readableStreamFromIterable(iterateReader(await Deno.open(path)))).arrayBuffer();
  hash = createHash("md5")
  hash.update(bytes);
  console.log("digest 3", toHex(hash.digest()));

  bytes = await new Response((await Deno.open(path)).readable).arrayBuffer();
  hash = createHash("md5")
  hash.update(bytes);
  console.log("digest 4", toHex(hash.digest()));
}

await main();