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setTimeout is not promisifiable

See original GitHub issue

The simple testcase

const {promisify} = require('util');
const timeout = promisify(setTimeout);

test('should timeout', async () => {
    await timeout(100);
});

works in Node environment, but fails in JSDOM. The difference is that JSDOM gives custom setTimeout implementation, that doesn’t work with Node built-in util.promisify.

Is there a way to make this work? For example, get the original Node’s setTimeout within JSDOM.

Issue Analytics

State:
Created 6 years ago
Comments:5 (3 by maintainers)

Top GitHub Comments

4reactions

just-boriscommented, Feb 19, 2018

If this is not a bug, then it should show a different error message. Currently it just fails due to test duration timeout.

  ● should timeout

    Timeout - Async callback was not invoked within the 5000ms timeout specified by jest.setTimeout.

      at node_modules/jest-jasmine2/build/queue_runner.js:72:21
      at Timeout.callback [as _onTimeout] (node_modules/jsdom/lib/jsdom/browser/Window.js:633:19)

Maybe if people will find this issue, it already would give them a pointer where to look.

0reactions

github-actions[bot]commented, May 12, 2021

This issue has been automatically locked since there has not been any recent activity after it was closed. Please open a new issue for related bugs. Please note this issue tracker is not a help forum. We recommend using StackOverflow or our discord channel for questions.

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