I've tried to explain it in another comment: > To add my own perspective: I was running some analytics batch job on Node and hit this limit, had to add multi-s

I've tried to explain it in another comment: > To add my own perspective: I was running some analytics batch job on Node and hit this limit, had to add multi-stage processing to accommodate it. Using --max-old-space-size=1900 did help a bit. So yeah, it did affect me, although not on a typical web project. It wouldn't be a problem at all if I knew about this limit from the start. Thus this is a warning for others. (BTW another limit I was told about is that objects can't have more than a million keys. Thankfully I did not hit that one.)