social number formatter

gistfile1.txt

function numberToSocial(bigNum, startAt = 10_000) {
  return bigNum < startAt ? bigNum : Intl.NumberFormat("en", {
    notation: "compact",
    style: "decimal",
    maximumFractionDigits: 1,
    roundingMode: "floor",
    unitDisplay: "narrow",
  }).format(bigNum)
}

console.log(numberToSocial(123));
console.log(numberToSocial(1457));
console.log(numberToSocial(10001));
console.log(numberToSocial(10512));
console.log(numberToSocial(2_300_213));
console.log(numberToSocial(1457, 1000));