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ReferenceError: queueMicrotask is not defined #9139

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BlackGlory opened this issue Nov 6, 2019 · 2 comments 路 Fixed by #9140
Closed

ReferenceError: queueMicrotask is not defined #9139

BlackGlory opened this issue Nov 6, 2019 · 2 comments 路 Fixed by #9140

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@BlackGlory
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馃悰 Bug Report

ReferenceError: queueMicrotask is not defined

To Reproduce

jsdom has not implemented queueMicrotask yet, so this is expected.

/**
 * @jest-environment jsdom
 */

test('queueMicrotask', () => {
  console.log(typeof window === 'undefined' ? process.version : 'jsdom') // jsdom
  console.log(queueMicrotask)
})

However, the node environment also cannot get the queueMicrotask, although the node environment has already implemented this function.

/**
 * @jest-environment node
 */

test('queueMicrotask', () => {
  console.log(typeof window === 'undefined' ? process.version : 'jsdom') // v12.13.0
  console.log(queueMicrotask)
})

Expected behavior

queueMicrotask is defined.

envinfo

  npmPackages:
    jest: ^24.9.0 => 24.9.0
@thymikee
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thymikee commented Nov 6, 2019

Looks like we need to inject queueMicrotask into globals of the Node environment. Would you like to send a PR? :) The code is here:
https://github.com/facebook/jest/blob/e3f4c65140f08a2ec81e5a8260704c1d201e33c1/packages/jest-environment-node/src/index.ts#L48-L55

SimenB pushed a commit that referenced this issue Nov 6, 2019
* Add global.queueMicrotask

Fix #9139

* jest-environment-node: Add queueMicrotask
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2 participants