gulpfile.js

var gulp = require('gulp');
var gutil = require('gulp-util');
var bower = require('bower');
var concat = require('gulp-concat');
var sass = require('gulp-sass');
var minifyCss = require('gulp-minify-css');
var rename = require('gulp-rename');
var sh = require('shelljs');
var sourcemaps = require('gulp-sourcemaps');
var templateCache = require('gulp-angular-templatecache');

var paths = {
  sass: ['./scss/**/*.scss'],
  scripts: ['./src/**/*.js', '!./www/js/app.bundle.js'],
  vendor: ['./vendor/**/*.js'],
  templateCache: ['./src/**/*.html']
};

var files = {
  jsbundle: 'app.bundle.js',
  vendorbundle: 'vendor.bundle.js',
  appcss: 'app.css'
};

gulp.task('default', ['sass','vendor','templatecache', 'scripts']);

// scripts - clean dist dir then annotate, minify, concat
gulp.task('scripts', function() {
  gulp.src(paths.scripts)
      .pipe(sourcemaps.init())
    //.pipe(jshint())
    //.pipe(jshint.reporter('default'))
    //  .pipe(ngAnnotate({
    //    remove: true,
    //    add: true,
    //    single_quotes: true
    //  }))
    //  .pipe(uglify())
      .pipe(concat(files.jsbundle))
      .pipe(sourcemaps.write())
      .pipe(gulp.dest('./www/dist'));
});

gulp.task('templatecache', function(done){
    gulp.src('./src/**/*.html')
        .pipe(templateCache({standalone:true}))
        .pipe(gulp.dest('./www/dist'))
        .on('end', done);
});

gulp.task('vendor', function() {
  gulp.src(['./vendor/ionic/js/ionic.bundle.min.js',
            './vendor/ngCordova/dist/ng-cordova.min.js',
            './vendor/angular-translate/angular-translate.min.js',
            'vendor/angular-translate-loader-static-files/angular-translate-loader-static-files.min.js',
            './vendor_manual/**/*.js'])
      .pipe(concat(files.vendorbundle))
      .pipe(gulp.dest('./www/dist/'));
});

gulp.task('sass', function(done) {
  gulp.src('./scss/ionic.app.scss')
    .pipe(sass())
    //.pipe(gulp.dest('./www/css/'))
    .pipe(minifyCss({
      keepSpecialComments: 0
    }))
    .pipe(rename({ extname: '.min.css' }))
    .pipe(gulp.dest('./www/css/'))
    .on('end', done);
});

gulp.task('watch', function() {
  gulp.watch(paths.sass, ['sass']);
  gulp.watch(paths.scripts, ['scripts']);
  gulp.watch(paths.vendor, ['vendor']);
    gulp.watch(paths.templateCache, ['templatecache']);
});

gulp.task('install', ['git-check'], function() {
  return bower.commands.install()
    .on('log', function(data) {
      gutil.log('bower', gutil.colors.cyan(data.id), data.message);
    });
});

gulp.task('git-check', function(done) {
  if (!sh.which('git')) {
    console.log(
      '  ' + gutil.colors.red('Git is not installed.'),
      '\n  Git, the version control system, is required to download Ionic.',
      '\n  Download git here:', gutil.colors.cyan('http://git-scm.com/downloads') + '.',
      '\n  Once git is installed, run \'' + gutil.colors.cyan('gulp install') + '\' again.'
    );
    process.exit(1);
  }
  done();
});