kleros/kleros-v2

export function commify(value: string | number): string {
  const comps = String(value).split(".");

  if (!String(value).match(/^-?[0-9]*\.?[0-9]*$/)) {
    return "0";
  }

  // Make sure we have at least one whole digit (0 if none)
  let whole = comps[0];

  let negative = "";
  if (whole.substring(0, 1) === "-") {
    negative = "-";
    whole = whole.substring(1);
  }

  // Make sure we have at least 1 whole digit with no leading zeros
  while (whole.substring(0, 1) === "0") {
    whole = whole.substring(1);
  }
  if (whole === "") {
    whole = "0";
  }

  let suffix = "";
  if (comps.length === 2) {
    suffix = "." + (comps[1] || "0");
  }
  while (suffix.length > 2 && suffix[suffix.length - 1] === "0") {
    suffix = suffix.substring(0, suffix.length - 1);
  }

  const formatted: string[] = [];
  while (whole.length) {
    if (whole.length <= 3) {
      formatted.unshift(whole);
      break;
    } else {
      const index = whole.length - 3;
      formatted.unshift(whole.substring(index));
      whole = whole.substring(0, index);
    }
  }

  if (suffix === ".0") suffix = "";

  return negative + formatted.join(",") + suffix;
}

export function uncommify(value: string): string {
  return value.replace(/,/g, "");
}