Can't negate regular expression

Question

I'm trying to implement the negation of the following regular expression in JavaScript:

^(\d)\1+-(\d)\1+-(\d)\1+$

That expression matches on the following:

• 11111-111-11111
• 22-2222-2222
• 55-55555-55

And not on the following:

• 12-22-3345
• 32-44555-3333

I want it to do the opposite of those scenarios.

I've tried the following regular expressions and they do not work:

^(?!(\d)\1+-(\d)\1+-(\d)\1+)$
^(?!(\d))\1+-(?!(\d))\1+-(?!(\d))\1+$
^(?!(\d)\1+)-(?!(\d)\1+)-(?!(\d)\1+)$

I thought I had a solid understanding of what negative lookahead does, but apparently not. What am I doing wrong here? Can anyone point me in the right direction to a solution?

EDIT: Here's a link to mess around with the current regular expression: https://regex101.com/r/jY9mJ6/1

Answer 1

This negative lookahead should work:

^(?!(\d)\1+-(\d)\1+-(\d)\1+$).*

RegEx Demo