feat: Friendly prerender message + remove UglifyJS from SSR build

[rkostrzewski]

This closes #178

[thangngoc89]

This is freaking awesome !!!
Best DX ever <3 <3

But we might want to consider add some info about prerender (why? cons?) and point user to that page. Because currently, there are no info about this on README

[rkostrzewski]

Heh, previously I've had See https://github.com/developit/preact-cli#prerender for further information. but I was too lazy to write it 😆

[lukeed]

Looks great @rkostrzewski ! 😻

Quick question though: Why was uglify removed on SSR? UglifyJS was mangling the maps, ergo making tracing impossible?

[rkostrzewski]

@lukeed that's one of the reasons there other being that chief said so 😆, right @developit ?

[lukeed]

@rkostrzewski Lol 😂 Just went thru that Slack. Looks like Chief said that because of the source map issues!

[hassanbazzi]

I notice this suggests people should check for window. I always just use this:

https://www.npmjs.com/package/window-or-global

It also makes SSR work for a bunch of features that need global, and it doesn't break even if you run things like eventListeners on global.

[rkostrzewski]

@thangngoc89 I've added Pre-rendering part to the README.md let me know if this is what you had in mind and I'll be merging this

[thangngoc89]

@rkostrzewski LGTM