Shader Graph Wireframe Shader?

Okay, I'm trying to make a shader that draws black lines along the edges of objects (similar to freestyle in blender). Currently, I'm just using a texture with black edges that works fine on cubes, but I'd like to use somet$$anonymous$$ng that works for more complex shapes. I tried an asset on the asset store but It also puts a black line diagonally through faces. Any ideas on how t$$anonymous$$s could work?