Version

v23.3.0

Platform

Darwin mac.local 24.1.0 Darwin Kernel Version 24.1.0: Thu Oct 10 21:05:23 PDT 2024; root:xnu-11215.41.3~2/RELEASE_ARM64_T6031 arm64

Subsystem

timers

What steps will reproduce the bug?

Run the following script:

const t = setTimeout(() => {
  console.log("1");
}, 0);
clearImmediate(t);
await new Promise(resolve =>
  setTimeout(() => {
    console.log("2");
    resolve();
  }, 0),
);
await new Promise(resolve =>
  setTimeout(() => {
    console.log("3");
    resolve();
  }, 0),
);

How often does it reproduce? Is there a required condition?

Reproduces every time

What is the expected behavior? Why is that the expected behavior?

2
3

The first timeout should be cleared, and the second two should run because they were not cleared.

What do you see instead?

The last setTimeout callback never runs:

$ node example.mjs
2
Warning: Detected unsettled top-level await at file:///Users/ben/example.mjs:11
await new Promise(resolve =>
^
$

Additional information

No response