Gulp minify

.gitignore

node_modules/

gulpfile.js

'use strict';

// Include Gulp & Tools We'll Use
var gulp = require('gulp');
var $ = require('gulp-load-plugins')();
var uglify = require('gulp-uglifyjs');
var runSequence = require('run-sequence');

// minify json
gulp.task('json', function () {
	return gulp.src('src/**/**/*.json')
		.pipe($.jsonminify())
		.pipe(gulp.dest('dist'))
		.pipe($.size({
			title: 'json'
		}));
})

// build zip for webstore
gulp.task('zip', function () {
	return gulp.src('dist/*').pipe($.zip('dist.zip')).pipe(gulp.dest('dist'))
})

// copies images
gulp.task('copy', function () {
	return gulp.src(['src/doc/**', 'src/img/**']).pipe(gulp.dest('dist'))
})

// Scan Your HTML For Assets & Optimize Them
gulp.task('html', function () {
	return gulp.src('src/*.html')
	.pipe($.useref.assets())
	// Concatenate And Minify JavaScript
	.pipe($.if ('*.js', uglify('', {
			mangle: {
				toplevel: true,
				screw_ie8: true
			},
			compress: {
				screw_ie8: true,
				sequences: true,
				properties: true,
				dead_code: true,
				drop_debugger: true,
				comparisons: true,
				conditionals: true,
				evaluate: true,
				booleans: true,
				loops: true,
				unused: false,
				hoist_funs: true,
				if_return: true,
				join_vars: true,
				cascade: true,
				negate_iife: true,
				drop_console: true
			}
	})))
	// for faster execution
	.pipe($.if('*.js', $.replace('"use strict";', '')))
	// Concatenate And Minify Styles
	.pipe($.if ('*.css', $.csso()))
	.pipe($.useref.restore())
	.pipe($.useref())
	// Minify Any HTML
	.pipe($.minifyHtml())
	// Output Files
	.pipe(gulp.dest('dist'))
	.pipe($.size({
		title: 'html'
	}));
});

// Clean Output Directory
gulp.task('clean', function (cb) {
	rimraf('dist', cb);
});


// Build Production Files
gulp.task('build', function (cb) {
	runSequence(['json', 'html', 'copy'], 'zip', cb);
});

// Default Task
gulp.task('default', ['clean'], function (cb) {
	gulp.start('build', cb);
});

package.json

{
  "devDependencies": {
    "gulp": "^3.6.0",
    "gulp-csso": "^0.2.6",
    "gulp-if": "^1.2.1",
    "gulp-load-plugins": "^0.5.0",
    "gulp-minify-html": "^0.1.3",
    "gulp-size": "^0.4.0",
    "gulp-uglifyjs": "^0.3.0",
    "gulp-uncss": "^0.4.4",
    "gulp-useref": "^0.4.3",
    "rimraf": "^2.2.8",
    "run-sequence": "^0.3.6",
    "gulp-replace": "^0.3.0",
    "gulp-jsonminify": "^0.0.1",
    "gulp-zip": "^0.4.0"
  },
  "engines": {
    "node": ">=0.10.0"
  }
}