demo/3d_demo/resources/src/gulpfile.js

var gulp = require('gulp');

var usemin = require('gulp-usemin');

var uglify = require('gulp-uglify');

var htmlmin = require('gulp-htmlmin');

var cleanCss = require('gulp-clean-css');

var rename = require("gulp-rename");

var rev = require('gulp-rev');

gulp.task('default', function() {

return gulp.src('./index.html')

.pipe(usemin({

css: [ rev() ],

html: [ htmlmin({ collapseWhitespace: true }) ],

js: [ uglify(), rev() ],

inlinejs: [ uglify() ],

inlinecss: [ cleanCss(), 'concat' ]

}))

.pipe(rename("3d_demo.min.html"))

.pipe(gulp.dest('..'));

});