ExperimentalWarning: queueMicrotask() is experimental.

[brunorozendo]

Describe the bug
A warning is throwed by just import sinon

(node:15479) ExperimentalWarning: queueMicrotask() is experimental.
  <Root />
    ✓ calls componentDidMount

To Reproduce
Just import sinon

import sinon from 'sinon';

or

const sinon = require('sinon');

Expected behavior
No warning

Context (please complete the following information):

• Library version: 7.2.4 and 7.2.5
• Environment:

$ node -v      
v11.10.0
$ npm -v 
6.8.0
$ uname -a
Linux fedora 4.20.11-200.fc29.x86_64 #1 SMP Wed Feb 20 15:56:08 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux

[fatso83]

This is sinonjs/fake-timers#232. Since this isn't really a functional bug impacting anything, I don't see why we should duplicate the issue here. Follow the lolex issue for updates (it has seen work by @shdq).

[fatso83]

With lolex 4 out and included in the latest Sinon, this warning should not show itself, unless explicitly triggered by using queueMicrotask()