Node to launch an app or a file using OS X services

For an automation system in our exhibition (vimeo.com/amcb/xyzt), we would need to launch app triggered by OSC signal. We are translating an old Quartz Composer patch, and we are looking for a simple way to launch an app directly from a VUO patch. The objective C code of the patch would basically do [NSWorkspace.sharedWorkspace launchApplication:[myNode objectForKey:@"appPath"]];