local function __TS__NumberToFixed(self, fractionDigits)
    if math.abs(self) >= 1e+21 or self ~= self then
        return tostring(self)
    end
    local f = math.floor(fractionDigits or 0)
    if f < 0 or f > 99 then
        error("toFixed() digits argument must be between 0 and 99", 0)
    end
    return string.format(
        ("%." .. tostring(f)) .. "f",
        self
    )
end