PerformanceObserver open handle

[electriquo]

🐛 Bug Report

i use prom-client version 13.1.0.

when i run jest --detectOpenHandles i get

Jest has detected the following 1 open handle potentially keeping Jest from exiting:

  ●  PerformanceObserver

      3 |
      4 | const prefix = "foo";
    > 5 | client.collectDefaultMetrics({ prefix });
        |        ^

To Reproduce

// prom.test.js

const client = require("prom-client");
const prefix = "foo";
client.collectDefaultMetrics({ prefix });

$ npm install prom-client --save
$ npm test prom.test.js

Expected behavior

when running jest --detectOpenHandles, it should not detect PerformanceObserver as open handle and it coincide with #10020

envinfo

$ npx envinfo --preset jest
npx: installed 1 in 2.381s

  System:
    OS: macOS 11.2
    CPU: (8) x64 Intel(R) Core(TM) i7-8569U CPU @ 2.80GHz
  Binaries:
    Node: 14.15.4 - ~/.nvm/versions/node/v14.15.4/bin/node
    npm: 6.14.11 - ~/.nvm/versions/node/v14.15.4/bin/npm
  npmPackages:
    jest: ^26.6.3 => 26.6.3

[electriquo]

@micaelmbagira: thank you!
@SimenB: could you please share when jest next release timeline?

[github-actions]

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