Hello everybody.
Yannic from twitter (https://twitter.com/0beqz) was able to convert it to Vanilla 
. It is working like a charm and it is very easy to use it. It suports the blur with depth based fade.
MeshReflectorMaterial.js · GitHub.
It is awesome. A great achievement and I’m sharing it here in case someone searches for it and end up here.
This is the first result I got with this: https://twitter.com/Andersonmancini/status/1499514798433869829?t=XubsW0VLmxS848HTcXFd-w&s=19