Is this like working/collaborating on glitch.com/codesandbox (auto building, hot reloading) BUT being able to do it offline (train,plane dev) and then just push

Is this like working/collaborating on glitch.com/codesandbox (auto building, hot reloading) BUT being able to do it offline (train,plane dev) and then just push with one command ? I guess i can see the value since i do realise im dependant to my internets connection to do some dev this last days (im a hacky ceo).