V8 allows to create a script with cached data from previous runs. With that parsing time is reduced a lot: http://v8project.blogspot.co.uk/2015/07/code-caching.html. For us, it means that the average for loading workbench.main.js drops from 880ms to ~615ms (tested on my MBP).