How to implement OutlineGlowPass by using vtk.js?

I want to implement a feature that highlights the outline of an object, like the OutlineGlowPass ( found in vtk in c++, on the web.
There is no OutlineGlowPass in vtk.js, does anyone know how to implement it or have a reference?

The best is to look how the glow pass was done in VTK C++ OpenGL and do the same in WebGL.