Sinon FakeTimers are not working with deno, but working in node.

[Lesiuk]

Node.js

import sinon from 'sinon';

const clock = sinon.useFakeTimers();

setTimeout(() => {
    console.log('setTimeout');
}, 1_000_000);

await clock.runAllAsync();

Deno

import sinon from 'npm:sinon';

const clock = sinon.useFakeTimers();

setTimeout(() => {
    console.log('setTimeout');
}, 1_000_000);

await clock.runAllAsync();

Node result:
Displays setTimeout imediately.

Deno result:
Waits for 1 milion miliseconds then displays setTimeout

[dsherret]

This one is tricky because the setTimeout global found in the npm packages is different than the setTimeout found in Deno code since Node's setTimeout is not web standard (it returns an object instead of a number). So, the sinon code is not overriding the Deno global setTimeout, but instead only the Node one. I don't think by design there is a solution here to make this work.

In the future, we will probably have the ability to import from node: specifiers, which means to make this work you would need to import setTimeout from Node like so:

// does not work at the moment, but may in the future
import { setTimeout } from "node:timers";
import sinon from 'npm:sinon';

const clock = sinon.useFakeTimers();

setTimeout(() => {
    console.log('setTimeout');
}, 1_000_000);

await clock.runAllAsync();

[Lesiuk]

Your answer pointed me to the solution.

import sinon from 'npm:sinon';

const clock = sinon.useFakeTimers({
    global: window
});

setTimeout(() => {
    console.log('setTimeout');
}, 10_000_000);

await clock.runAllAsync();

And it works now.
Thank you.

[dsherret]

Ah, awesome!

Note that you might want to do global: globalThis instead because the window global might be removed in a breaking change in the future (see #13367).