identifyNumber = n => {
	if (n === (n | 0)) {
		if (n <= 127 && n >= -128) return 0;
		if (n <= 2147483647 && n >= -2147483648) return 1;
	}
	return 2;
}
@param {number} n number
@returns {0 | 1 | 2} type of number for serialization