dynamically import ability, item, hero data

[blukai]

https://github.com/odota/ui/blob/master/src/components/Visualizations/inflictorWithValue.jsx

[howardchung]

If we don't have a performance/load time issue then we don't necessarily have to do this. However, if we want to make the tooltips available in multiple languages, we will probably want to do this because loading multiple languages of abilities will get big really quickly.

[howardchung]

Did a quick check, abilities data is currently about 720KB uncompressed and 120KB compressed. As of this writing the compressed bundle size is 923KB, so this is a pretty significant chunk of the bundle.

Items are 144KB. Assuming the same factor of 6 for compression that's 24KB compressed. All in all I estimate around 200KB of our bundle is dotaconstants data.

[howardchung]

Doing this will also enable translated data, since the client can just request data in the desired language.

[howardchung]

status update: done for abilities, not done for heroes/items at this point

[howardchung]

I also recently did this for items. Heroes is left (but is also the smallest of the three), plus being heavily used means we may not benefit as much from the code splitting.