Simple WP Gulpfile

gulpfile.js

var gulp = require('gulp'),
    watch = require('gulp-watch'),
    sass = require('gulp-sass'),
    autoprefixer = require('gulp-autoprefixer'),
    minify = require('gulp-minify-css'),
    jshint = require('gulp-jshint'),
    stylish = require('jshint-stylish'),
    uglify = require('gulp-uglify'),
    concat = require('gulp-concat');


gulp.task('sass', function () {
  console.log('Starting Sass');
  gulp.src('./assets/sass/main.scss')
    .pipe(sass().on('error', sass.logError))
    .pipe(gulp.dest('./assets/css'));
});

gulp.task('js', function(){
  console.log('Starting JS');
  gulp.src('assets/src/js/*.js')
    .pipe(jshint())
    .pipe(jshint.reporter(stylish))
    .pipe(gulp.dest('assets/js'));
});

gulp.task('sasspost', function(){
  console.log('Starting Post Processing');
  gulp.src('assets/css/*.css')
  .pipe(autoprefixer({
    browsers: ['last 3 versions'],
    cascade: false
  }))
  .pipe(minify())
  .pipe(concat('main.min.css'))
  .pipe(gulp.dest('assets/css'));
});

gulp.task('jspost', function(){
  gulp.src('assets/js/*.js')
  .pipe(uglify())
  .pipe(concat('scripts.min.js'))
  .pipe(gulp.dest('assets/js'));
});

gulp.task('default', function(){
  console.log('Watching Files in assets/');
  gulp.watch('assets/sass/**', ['sass', 'sasspost']);
  gulp.watch('assets/js/**', ['js', 'jspost'])
});

package.json

{
  "name": "design-studio-west",
  "version": "1.0.0",
  "description": "",
  "main": "gulpfile.js",
  "scripts": {
    "test": "echo \"Error: no test specified\" && exit 1"
  },
  "author": "",
  "license": "ISC",
  "dependencies": {
    "gulp": "^3.9.0",
    "gulp-autoprefixer": "^2.3.1",
    "gulp-concat": "^2.6.0",
    "gulp-jshint": "^1.11.2",
    "gulp-minify-css": "^1.2.0",
    "gulp-sass": "^2.0.4",
    "gulp-uglify": "^1.2.0",
    "gulp-watch": "^4.3.4",
    "jshint-stylish": "^2.0.1",
    "uglify": "^0.1.5"
  }
}