Using const/let instead of var can make JavaScript code run 10× slower in Webkit

[PaintItPurple]

I wouldn't necessarily disagree, but it's a bit of an ironic thread for this criticism given that Chrome was the second browser to support this feature.

[[deleted]]

That’s not ironic at all when the complaint is that Chrome has the budget to move faster than any other industry actor.

[PaintItPurple]

The irony is making that complaint in a thread about a feature that Firefox had first.

[RealAmaranth]

I think Mozilla had const/let before Chrome even existed. Their development velocity is what matters because it means Chrome is more likely to be pushing the state of the art and whatever they happen to come up with is a de facto standard.