Current Implementation not working on windows (related to child_process.spawn)

[Raagh]

Problem: the current implementation is not working on windows. child_process.spawn from node.js throws an error when trying to lunch angular by ng tests in a command line. On linux and MacOS it works fine.

On windows it works fine if you replace spawn by exec (but we cannot use this as it brings bigger problems)

Repro steps:
Clone repo with branch bugfix/not-working-on-windows
Start application on windows you will see this error in console after angular starts.

[Raagh]

in case you wanna give it a try @hbenl ! . no compromise 👍

[hbenl]

Wow, I was not aware how broken spawn is on Windows! There is even a project trying to fix all the bugs. But even that doesn't solve this issue which seems to come from spawn being unable to create the IPC channel on Windows.

[Raagh]

@hbenl yes I was surprised too. There's tons of people having the same issue, also found that project but indeed it doesn't help us in this case. Thank you very much for your changes. I will try your pull request when I get home and see what we can do too make it work.

[Raagh]

@hbenl made some major changes to fix it, there is now a new way loading and running test much more similar to the one you have in other adapters and working great. also we re back on spawn with socket.io.