As a web developer I have to say: a 2x increase in JS performance is insignificant. If I would profile most web apps, JS execution wouldn't account for much of

As a web developer I have to say: a 2x increase in JS performance is insignificant. If I would profile most web apps, JS execution wouldn't account for much of the processing time, the DOM interactions are order of magnitude slower. Users would barely notice a 2x increase in JS speed. Also the snapshotting could be done with JS too if Google would be really concerned about startup time. I would say that at this given moment in time the performance argument is BS, the real reason is that most of Google are Java developers that probably don't like JavaScript and they want something that looks more like Java, because that's what they are used to. JavaScript has it's issues, however I think that TypeScript the superior approach towards these kinds of problems.