Gulp, arquivo de configuração

gulpfile.js

/********************************************************************
1. DEPENDÊNCIAS
********************************************************************/
var gulp = require('gulp'),
    sass = require('gulp-sass'),
    autoprefixer = require('gulp-autoprefixer'),
    minifycss = require('gulp-minify-css'),
    jshint = require('gulp-jshint'),
    uglify = require('gulp-uglify'),
    imagemin = require('gulp-imagemin'),
    rename = require('gulp-rename'),
    clean = require('gulp-clean'),
    concat = require('gulp-concat'),
    cache = require('gulp-cache'),
    connect = require('gulp-connect'),
    minifyHtml = require("gulp-minify-html");



/********************************************************************
1. DEPENDÊNCIAS
********************************************************************/
// Styles
gulp.task('styles', function() {
  return gulp.src(['app/styles/**/*.scss', 'app/styles/**/*.sass'])
    .pipe(sass({ style: 'expanded' }))
    .pipe(autoprefixer("last 3 version","safari 5", "ie 8", "ie 9"))
    .pipe(gulp.dest("public/styles"))
    .pipe(rename({suffix: '.min'}))
    .pipe(minifycss())
    .pipe(gulp.dest('public/styles'))
    .pipe(connect.reload());
});

// Scripts
gulp.task('scripts', function() {
  return gulp.src('app/scripts/**/*.js')
    .pipe(jshint())
    .pipe(jshint.reporter('default'))
    .pipe(concat('main.js'))
    .pipe(gulp.dest('public/scripts'))
    .pipe(rename({ suffix: '.min' }))
    .pipe(uglify())
    .pipe(gulp.dest('public/scripts'))
    .pipe(connect.reload());
});

// Images
gulp.task('images', function() {
  return gulp.src('app/images/**/*')
    .pipe(cache(imagemin({ optimizationLevel: 3, progressive: true, interlaced: true })))
    .pipe(gulp.dest('public/images'))
     .pipe(connect.reload());
});

//Font
gulp.task('fonts', function() {
  return gulp.src(['app/fonts/**/*'])
    .pipe(gulp.dest('public/fonts/'));
});

//Html
gulp.task('build', function () {
    gulp.src('app/views/**/*.html')
    .pipe(minifyHtml())
    .pipe(gulp.dest('public'))
    .pipe(connect.reload());
});

// Clean
gulp.task('clean', function() {
  return gulp.src(['public/styles', 'public/scripts', 'public/images', 'public'], {read: false})
    .pipe(clean());
});

// Watch
gulp.task('watch', function() {

  // Watch .scss files
  gulp.watch('app/styles/**/*.scss', ['styles']);

  // Watch .js files
  gulp.watch('app/scripts/**/*.js', ['scripts']);

  // Watch image files
  gulp.watch('app/images/**/*', ['images']);

  // Watch html files
  gulp.watch('app/views/**/*.html', ['build']);

});

//Connect
gulp.task('connect', function() {
  connect.server({
    root: 'public',
    port: 80,
    livereload: true
  });
});

// Default task
gulp.task('default', ['clean', 'connect', 'watch'], function() {
    gulp.start('styles', 'scripts', 'images', 'build');
});