It will still have a small impact: -) Less work for decompression -) Less total length means lexing+parsing will be a bit quicker -) shorter class names will

It will still have a small impact: -) Less work for decompression -) Less total length means lexing+parsing will be a bit quicker -) shorter class names will also mean a lower memory consumption because of shorter strings, and ideally fewer allocations if some pooling or smart allocator is used But those points can probably be completely ignored, since JS is a way way bigger factor.