Memory leak with deno/bun when catching errors

[daweijs]

Reproduction with deno :

ky.deno.test.ts :

import ky from "https://esm.sh/[email protected]";

Deno.test("throws HTTPError : no memory leak", async () => {
  // this test throws the expected error and does not leak memory
  // HTTPError: Request failed with status code 404 Not Found: GET https://github.com/not_found

  await ky.get("https://github.com/not_found").text();
});

Deno.test("memory leak when catching error", async () => {
  // this test report a memory leak when catching the error
  // the memory leak is fixed if we rethrow something

  // the test fails with :
  // Leaks detected:
  // - A fetch response body was created during the test, but not consumed during the test. Consume or close the response body `ReadableStream`, e.g `await resp.text()` or `await resp.body.cancel()`.

  try {
    await ky.get("https://github.com/not_found").text();
  } catch (error) {
    console.error("I handle the error here");

    // fix the leak : rethrow the error
    // throw error;
  }
});

deno test --allow-net ky.deno.test.ts

Same issue with bun : denoland/deno#25546 (comment)