gistfile1.js

//Module install command: npm install gulp-less gulp-livereload gulp-imagemin gulp-uglify gulp-minify-css gulp-rename gulp-notify --save

// Get modules
var gulp = require('gulp');
 
// Task boilerplate
gulp.task('taskname', function() {
 
});
 
// The default task (called when you run `gulp` from cli)
gulp.task('default', ['']);

// Get modules
var gulp = require('gulp');
var less = require('gulp-less');
var livereload = require('gulp-livereload');
var imagemin = require('gulp-imagemin');
var uglify = require('gulp-uglify');
var minify_css = require('gulp-minify-css');
var rename = require('gulp-rename');
var notify = require("gulp-notify");
 
// Task less
gulp.task('styles', function () {
    gulp.src('less/bootstrap.less')
        .pipe(less(function () {
          this.emit("error", new Error("Something happend: Error message!"))
        }))
        .on("error", notify.onError(function (error) {
          return "Message to the notifier: " + error.message;
        }))
        .pipe(minify_css())
        .pipe(rename('style.min.css'))
        .pipe(gulp.dest('css'))
        .pipe(livereload());
});
 

// The default task (called when you run `gulp` from cli)
gulp.task('default', ['less']);

gulp.task('images', function () {
        gulp.src('images-orig/*.{png,gif,jpg}/')
        .pipe(imagemin())
        .pipe(gulp.dest('images/'));
});

gulp.task('watch', function () {
  var server = livereload();
  gulp.watch('less/*.less', ['styles']);
  gulp.watch('js/**.js', ['scripts']);
  gulp.watch('images-orig/**', ['images']);
  gulp.watch('../../app/views/**/*.php').on('change', function(file) {
    server.changed(file.path);
  });
});