It still can on JS toolchains. There is multiprocess webpack (happypack) now, Flow threads really well, and the extra cores can even help when restarting a bunc

It still can on JS toolchains. There is multiprocess webpack (happypack) now, Flow threads really well, and the extra cores can even help when restarting a bunch of processes at once and live reloading. Shaving off even a second helps productivity when you do it dozens/hundreds of times a day.