gulpfile test

gulpfile.js

var gulp = require('gulp');
var uglify = require('gulp-uglify');
var minicss = require('gulp-minify-css');
var rename = require("gulp-rename");
var del = require('del');

gulp.task('clean', function(cb) {
  del(['build'], cb);
});

gulp.task('css', function(){
  gulp.src('src/**/*.css')
    .pipe(gulp.dest('build'))
    .pipe(minicss())
    .pipe(rename({
      suffix:"-min"
    }))
    .pipe(gulp.dest('build'));
});

gulp.task('js', function(){
  gulp.src('src/**/*.js')
    .pipe(gulp.dest('build'))
    .pipe(uglify())
    .pipe(rename({
      suffix:"-min"
    }))
    .pipe(gulp.dest('build'));
});

gulp.task('default', ['clean'], function(){
  gulp.start('css', 'js');
});