dantheman Posts

dantheman

•Created by dantheman on 8/14/2023 in #help

How to release node:zlib resources

I have some testcases which use the node:zlib polyfill and I'm having a bit of trouble getting the tests to pass. Here's a very basic example:

import { createDeflate } from 'node:zlib';
Deno.test('deflate teardown', async () => {
  const deflate = createDeflate();
  deflate.close();
  await new Promise(ok => setTimeout(ok, 1000));
});

import { createDeflate } from 'node:zlib';
Deno.test('deflate teardown', async () => {
  const deflate = createDeflate();
  deflate.close();
  await new Promise(ok => setTimeout(ok, 1000));
});

When I run this, Deno finds a leak:

error: Leaking resources:
  - A "zlib" resource (rid 3) was created during the test, but not cleaned up during the test. Close the resource before the end of the test.

error: Leaking resources:
  - A "zlib" resource (rid 3) was created during the test, but not cleaned up during the test. Close the resource before the end of the test.

Am I missing something, or is this an issue with the node:zlib polyfill?

2 replies

DDeno

•Created by dantheman on 3/24/2023 in #help

Investigating memory leak after adding new app dependency

10 replies

DDeno

•Created by dantheman on 3/8/2023 in #help

How can I create a linked [ReadableStream,WritableStream] pair?

Hi, I have a function A which accepts a WritableStream and another function B which accepts a ReadableStream. How can I plug them into each other so that the writes from function A will be given to function B? In NodeJS this could be accomplished with an NPM package like https://github.com/indutny/stream-pair.

4 replies