Having a varible in regex?

Hi I have the following code

    const containsAtLeastDigits = (digits, password) => {
  
  const regex = new RegExp(/(?=.{6}).*/g);

  if (regex.test(password)) {
    console.log("yes");
    return false;
  } else {
    console.log("no");
  }
};

containsAtLeastDigits(6, "abcdefg");

Here I have to pass the parameter digits where {6} is defined in regex as interpolation like this ${digits}. Can someone please explain if this is possible to do? I saw a few answers in StackOverflow itself but they are not working.