Hello, As I have seen quite a few times questions about setting up the dev environment and how to debug typescript and so on, I Changed a bit the dev process in th repo (for good I hope :-) ) You can find the entire doc here: http://doc.babylonjs.com/generals/how_to_start It is mostly explaining how to use VSCode, but you could use any editor suporting chrome debugging. The number of steps after installing the tools is really short: npm install run the test task