>the react-ish pseudocode probably doesn't make nearly as many allocations as a naive reading of the code might expect. Who knows, if V8 manages it to turn it

>the react-ish pseudocode probably doesn't make nearly as many allocations as a naive reading of the code might expect. Who knows, if V8 manages it to turn it into a for-loop? I don't, but after a quick googling, as of 2018, it certainly didn't: https://github.com/dg92/Performance-Analysis-JS https://github.com/dg92/Performance-Analysis-JS The problem with JS is that the execution model is so nebulous, that performance advice basically boils down to - trust in Google.