What's the regex problem in Firefox?

Question

JavaScript

There is a regular expression that clears the line: It works in chrome, but in Firefox I get an error:
'hello World'.replace(/[^\p{L}]/ug, '')

SyntaxError: invalid identity escape in regular expression

How to be?

Answer 1

Firefox does not yet know such expressions.
https://bugzilla.mozilla.org/show_bug.cgi?id=1361876
Use some transpiler
https://github.com/tc39/proposal-regexp-unicode-pr...