[phone format] #phone #format

phone-format-simple.js

const formatPhone = (phone) => {
  if (typeof phone !== "string") return "";

  const phoneNums = phone.replaceAll(/\D/g, "");

  if (phoneNums.length !== 11) return "+" + phoneNums;

  const code = phoneNums.substring(0, 1);
  const region = phoneNums.substring(1, 4);
  const phone1 = phoneNums.substring(4, 7);
  const phone2 = phoneNums.substring(7, 9);
  const phone3 = phoneNums.substring(9, 11);

  return `+${
    code === "8" ? "7" : code
  } (${region}) ${phone1}-${phone2}-${phone3}`;
};