gulpfile.js

/**
 * Gulp File
 *
 * 1) Make sure you have node and npm installed locally
 *
 * 2) Install all the modules from package.json:
 * $ npm install
 *
 * 3) Run gulp to mifiy javascript and css using the 'gulp' command.
 */

var gulp      = require( 'gulp' );
var rename    = require( 'gulp-rename' );
var uglify    = require( 'gulp-uglify' );
var minifyCSS = require( 'gulp-minify-css' );
var chmod     = require( 'gulp-chmod' );
var del       = require( 'del' );
var sass      = require( 'gulp-sass' );
var wpPot     = require( 'gulp-wp-pot' );
var sort      = require( 'gulp-sort' );

var paths = {
	scripts: ['assets/js/*.js' ],
	adminScripts: ['assets/js/admin/*.js'],
	css: ['assets/css/*.css'],
    frontedCss: ['assets/css/frontend/*.scss']
};

gulp.task( 'clean', function( cb ) {
	return del( ['assets/js/*.min.js','assets/js/admin/*.min.js', 'assets/css/*.min.css'], cb );
});

gulp.task( 'default', [ 'CSS','FrontendCSS','JS','adminJS' ] );

gulp.task( 'CSS', ['clean'], function() {
	return gulp.src( paths.css )
        .pipe( sass().on('error', sass.logError))
		.pipe( gulp.dest( 'assets/css' ) );
});

gulp.task( 'FrontendCSS', function() {
    return gulp.src( paths.frontedCss )
        .pipe( sass().on('error', sass.logError))
        .pipe( gulp.dest( './assets/css/frontend' ) );
});

gulp.task( 'JS', ['clean'], function() {
	return gulp.src( paths.scripts )
		// This will minify and rename to *.min.js
		.pipe( uglify() )
		.pipe( rename({ extname: '.min.js' }) )
		.pipe( chmod( 644 ) )
		.pipe( gulp.dest( 'assets/js' ));
});

gulp.task( 'adminJS', ['clean'], function() {
	return gulp.src( paths.adminScripts )
		// This will minify and rename to *.min.js
		.pipe( uglify() )
		.pipe( rename({ extname: '.min.js' }) )
		.pipe( chmod( 644 ) )
		.pipe( gulp.dest( 'assets/js/admin' ) );
});

gulp.task( 'pot', function() {
	return gulp.src( [ '**/**.php', '!node_modules/**'] )
		.pipe( sort() )
		.pipe( wpPot({
			domain: 'woothemes-sensei',
			bugReport: 'https://www.transifex.com/woothemes/sensei-by-woothemes/'
		}) )
		.pipe( gulp.dest( 'lang' ) );
});