Function isSafeNumberString

src/number.ts:13–22

(s: string)

 * @param {String} s number format string, like `"123"`, `"-1000123123123123123123"`
 */
export function isSafeNumberString(s: string) {
  if (s[0] === '-') {
    s = s.substring(1);
  }
  if (s.length < MAX_SAFE_INTEGER_STR_LENGTH ||
    (s.length === MAX_SAFE_INTEGER_STR_LENGTH && s <= MAX_SAFE_INTEGER_STR)) {
    return true;
  }
  return false;
}

/**
 * Convert string to Number if string in safe Number scope.