Gulp Error Notifications

gulp-error-notifications.js

var gulp = require('gulp');
var sass = require('gulp-ruby-sass');
var rename = require('gulp-rename');
var notify = require('gulp-notify');
var plumber = require('gulp-plumber');
var gutil = require('gulp-util');
var minifycss = require('gulp-minify-css');
var autoprefixer = require('gulp-autoprefixer');


var onError = function(err) {
    gutil.beep();
    console.error("You did something wrong, NERD! " + err.message);
}

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

    var onError = function(err) {
        notify.onError({
                    title:    "Gulp",
                    subtitle: "Failure!",
                    message:  "Error: <%= error.message %>",
                    sound:    "Beep"
                })(err);

        this.emit('end');
    };

   return gulp.src('assets/scss/global.scss')
       .pipe(plumber({errorHandler: onError}))
       .pipe(sass({ style: 'expanded' }))
       .pipe(autoprefixer())
       .pipe(gulp.dest('assets/css/'))
       .pipe(rename({suffix: '.min'}))
       .pipe(minifycss())
       .pipe(gulp.dest('assets/css/'))
       .pipe(notify({ // Add gulpif here
           title: 'Gulp',
           subtitle: 'success',
           message: 'Sass task',
           sound: "Pop"
       }));
});

gulp.task('less', function() {
    gulp.src('app/src/less/main.less')
        .pipe(plumber({
            errorHandler: onError
        }))
        .pipe(less({
            paths: [path.join(__dirname, 'less', 'includes')],
            sourceMap: true
        }))
        .pipe(gulp.dest('app/release/styles'))
});

gulp.task('watch', function(){
   gulp.watch('assets/scss/**/*.scss', ['sass']);
});

gulp.task('default', ['sass', 'watch']);