Add dom.data during hydration to avoid redundantly adding text…

[JoviDeCroock]

Due to the dom not being available as a node diffChildren will double add this text if we don't set the dom.data

I have been looking at solving it in diffChildren but the problem persists itself like this:

LOG: 'oldDom', hello bar
LOG: 'newChldren', ['hello ', 'bar']
LOG: 'oldChldren', []
LOG: 'excess', [hello bar]

So we effectively come in at the first newChild and diff it with oldDom, next up we have no oldDom and we just append it to the text node.

A potential perf improvement would be to check if the parent.innerHTML === props this would allow us to skip childDiffing for that text node (if it does not contain any dom nodes).

Fixes #2237

[jchip]

wow! that was fast!!! thanks.

[coveralls]

Coverage decreased (-0.002%) to 97.749% when pulling a0ee655 on fix-hydrate-text-nodes into f695f5a on master.

[cristianbote]

👍 wooosh! nice!

[marvinhagemeister]

Good catch 🙌💯