Not that I doubt the value of the work, and the reasoning of its performance directly affecting common operations makes intuitive sense, but I would have liked to hear more about what concrete problems were being solved. Was there any interesting data across the V8 ecosystem about `JSON.stringify` dominating runtimes?
It requires macOS 13.0 (High Sierra, 2017) or later, which is several releases after it stopped being called OS X. 10.11 (El Capitan, 2015) was the last OS X.