regex Modifier syntax not working as expected

[hugo9655]

Version

v24.9.0

Platform

Windows 10 LTSC

Subsystem

No response

What steps will reproduce the bug?

1. Open node in a CLI.
2. Paste the following example regex:

   var e = "-SAd";
   e.match(/[\[-](?-i:\b(test|SAD|Hello)\b)/i);

3. Notice how it finds a match when it shouldnt have.
   

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

Can be replicated almost all of the time, though sometimes its inconsistent in whether it works or not.

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

In the example above it should only find a match if the case-sensitive modifier capture group finds -SAD, no other variations.

What do you see instead?

It matches -SAd.

Additional information

This issue is not exclusive to node.js, the same behaviour can be found in common browsers. But im hoping it can be fixed in node.js at least.

[Renegade334]

Irregexp issue: https://issues.chromium.org/issues/447583670