type table = {
    [string]: CFrame | Vector3 | UDim2 | Vector2 | number | Color3 | UDim | boolean | Rect | Vector2int16 | EnumItem,
}
local TweenService = game:GetService("TweenService")
local defaultEasing = {
    EaseStyle = Enum.EasingStyle.Linear,
    EaseDir = Enum.EasingDirection.In
}
local function mod(
    part,
    ttime: number,
    towhat: table | number | boolean,
    easestyle: Enum.EasingStyle?,
    easedir: Enum.EasingDirection?
): Tween
    easedir = easedir or defaultEasing.EaseDir
    easestyle = easestyle or defaultEasing.EaseStyle
    if part.ClassName == "ParticleEmitter" then
        local tVal = Instance.new("NumberValue")
        tVal.Value = part.Transparency.Keypoints[1].Value
        tVal.Parent = part
        local tInfo = TweenInfo.new(ttime, easestyle, easedir)
        local ftwn = TweenService:Create(tVal, tInfo, { Value = towhat.Transparency })
        tVal.Changed:Connect(function(val)
            part.Transparency = NumberSequence.new({
                part.Transparency.Keypoints[1],
                NumberSequenceKeypoint.new(1, val),
            })
        end)
        ftwn.Completed:Connect(function()
            ftwn:Destroy()
            tVal:Destroy()
        end)
        return ftwn
    else
        local tInfo = TweenInfo.new(ttime, easestyle, easedir)
        local ftwn = TweenService:Create(part, tInfo, towhat)
        ftwn.Completed:Connect(function()
            ftwn:Destroy()
        end)
        return ftwn
    end
end

return function(easestyle: Enum.EasingStyle, easedir: Enum.EasingDirection)
    if easedir then
        defaultEasing.EaseDir = easedir
    end
    if easestyle then
        defaultEasing.EaseStyle = easestyle
    end
    return mod
end