Nice to see the property work finally removed getClass hooks. I remember trying to remove those like 6 years ago, but I thought the breakage would be too big to even try. SpiderMonkey is in good hands!
Thanks for posting. I was already wondering, if SpiderMonkey didn't get the memo of Quantum coming or what, because I never heard much about it when seemingly every other team was touting their horn.
Also, this is a fantastic format for an article if you're looking to communicate developer value to a wider audience.