Keystone is crazy slow to start

This is an umbrella issue to track startup performance. It should be possible to get startup perf <100ms because there just isn’t that much code!

console.time('keystone');
var keystone = require('keystone');
console.timeEnd('keystone');

$ node server.js 
keystone: 3297.995ms

[josephg]

Without knowledge of keystone’s internals, some obvious candidates for lazy / optional module loading:

• lib/email (670ms)
• browserify (612ms). The keystone admin UI javascript should be compiled in an npm postinstall script.

Alone those two changes would decrease startup time by >50% (to about 1 second on my mba).

[ghuroo]

Problem: Loading the Admin UI for the first time (after the server restarts) takes way too long (1min), and unfortunately slows down my productivity a lot.

Cause: fields.js and admin.js take > 1 min to be generated

Proof:

Details: Lately, more than ever, this is something I have been struggling with. I don’t want to be picky about it because having an auto-generated admin UI, even if slowly generated at first, is far better than not having one and it’s the first reason for me to use KeystoneJS. But unfortunately, since I’me developing my biggest project so far, I have to take a lot of consideration into how the Admin UI displays the data and enables any user to manage it = which translates in restarting the server all the time and checking the changes.

Is it something I’m doing wrong? Any tips on how to decrease this, or is it already fixed and it’s waiting for a PR? I suppose it has to do with reading all the Models structure and translating to React.js components/etc (I have no experience with reactjs yet).