README.md

git clone https://github.com/jquery/jquery-ui.git
cd jquery-ui
git checkout ref-1029-css-dependency-comments
npm install builder-jquery-css async glob
wget https://gist.githubusercontent.com/rxaviers/01ab3bc43bf9f42c769f/raw/3b7295b66ebc0e2d7b4753780f6075131b086409/build-css.js
node build-css.js

build-css.js

var async = require( "async" );
var path = require( "path" );
var jQueryCSSBuilder = require( "builder-jquery-css" );
var glob = require( "glob" );
var fs = require( "fs" );

var files = {};

glob.sync( "./ui/*.js", { nodir: true } ).forEach(function( filepath ) {
  files[ path.relative( ".", filepath ) ] = fs.readFileSync( filepath );
})
glob.sync( "./themes/base/*.css", { nodir: true } ).forEach(function( filepath ) {
  files[ path.relative( ".", filepath ) ] = fs.readFileSync( filepath );
})
files[ "jquery.js" ] = "define(function() {});"

async.parallel([ "structure", "theme" ].map(function( selector ) {
  return function( callback ) {
    jQueryCSSBuilder( files, selector, {
      appDir: "ui",
      include: [ "accordion", "autocomplete", "button", "core", "datepicker",
        "dialog", "draggable", "droppable", "effect-blind", "effect-bounce",
        "effect-clip", "effect-drop", "effect-explode", "effect-fade",
        "effect-fold", "effect-highlight", "effect", "effect-puff",
        "effect-pulsate", "effect-scale", "effect-shake", "effect-size",
        "effect-slide", "effect-transfer", "menu", "mouse", "position",
        "progressbar", "resizable", "selectable", "selectmenu", "slider",
        "sortable", "spinner", "tabs", "tooltip", "widget"
      ],
      paths: {
        "jquery": "../jquery"
      }
    }, function( error, css, files ) {
      if ( error ) {
        return callback( error );
      }
      console.log( "Writing jquery-ui." + selector + ".css" );
      fs.writeFileSync( "jquery-ui." + selector + ".css", css );
      callback();
    });
  };
}), function( error ) {
  if ( error ) {
    console.error( error );
    throw error;
  }
});