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no-regexp-lookbehind

This prevents the use of the RegExp lookbehind feature

/(?<=a>)b/

new RegExp("/(?<=a)b")

These will not be allowed because they are not supported in the following browsers:

  • Edge < 79
  • Safari (any version at the time of writing)
  • Firefox (any version at the time of writing)
  • Chrome < 62

What is the Fix?

You may be able to rewrite your expression using (Negative) Lookaheads, but if not then there is no solution for this, aside from pulling in a custom RegExp library.