While the M1 is surely impressive I think you put too much weight on those JS compilation results. Windows is known to be really slow for this specific task since it has poor per-file IO performance - especially when Windows Defender is enabled.
I do my daily work - involving lots of JS compilation - on a i5-4690 running ubuntu server, it's faster than any of my colleagues' much newer MacBook Pros (no M1's yet though). Our Windows laptops are so far behind that it's just awful to watch (3-5 times slower).
I do my daily work - involving lots of JS compilation - on a i5-4690 running ubuntu server, it's faster than any of my colleagues' much newer MacBook Pros (no M1's yet though). Our Windows laptops are so far behind that it's just awful to watch (3-5 times slower).