Godot Tutorial - How to fix edge stretching

So I have a sprite scene

 
If I move the UV, the pixels at the edge will stretch
 
it's quite annoying
but we can handle it

Decompose the UV that has been added


Add Step node and set the value to 1


Then multiply with alpha and connect it

Here it is
but what if you move it with a negative value?


Add the OneMinus node then the UV will flip horizontally


But what about the Y?
'Extract' Y then add Step node


Multiply them (by adding a multiply node) then connect.


Likewise if you move the Y with a negative value
add the OneMinus node then the UV will flip vertically