Regular expression in Firefox, what's wrong?

Question

JavaScript

Good afternoon,
Please help. Very simple code to replace double quotes "" with "".
Here is the code:

var str = `asdffsafd sdfsf, 7 sdf<br>asdfsfaf С.Я.afdsdfaf "asdf asfdasfsaf"<br>
"La <br> lala," "A fdfdfd, А fdfdfd<br>
fdff df dfdfdf dfdfdf, "<br> adffsdf asdfdsfsadf asdfdf adfadsff`;

var changeDoubleQuotes = function (str) {
  var regExp1 = /\n/g;
  var _str = str.replace(regExp1, ``);
  var regExp = /"(?<name>.+?)"/img;
  return _str.replace(regExp, `«$<name>»`);
};

console.log(changeDoubleQuotes(str));

But in firefox for some reason it says SyntaxError: invalid regexp group.
I think he doesn't like named groups, which is weird.
How to write what I want Firefox to accept (in Chrome and Opera everything is fine)?

Answer 1

var str = `asdffsafd sdfsf, 7 sdf<br>asdfsfaf С.Я.afdsdfaf "asdf asfdasfsaf"<br>
"La <br> lala," "A fdfdfd, А fdfdfd<br>
fdff df dfdfdf dfdfdf, "<br> adffsdf asdfdsfsadf asdfdf adfadsff`;

var changeDoubleQuotes = function (str) {
  return str.replace(/"([\s\S]*?)"/g, '«$1»');
};

console.log(changeDoubleQuotes(str));