text: // generated on 2017-12-17 using generator-webapp 3.0.1
  const gulp = require('gulp');
  const gulpLoadPlugins = require('gulp-load-plugins');
  const browserSync = require('browser-sync').create();
  const del = require('del');
  const wiredep = require('wiredep').stream;
  const runSequence = require('run-sequence');
  
  const $ = gulpLoadPlugins();
  const reload = browserSync.reload;
  
  let dev = true;
  
  gulp.task('styles', () => {
    return gulp.src('app/styles/*.scss')
      .pipe($.plumber())
      .pipe($.if(dev, $.sourcemaps.init()))
      .pipe($.sass.sync({
        outputStyle: 'expanded',
        precision: 10,
        includePaths: ['.']
      }).on('error', $.sass.logError))
      .pipe($.autoprefixer({browsers: ['> 1%', 'last 2 versions', 'Firefox ESR']}))
      .pipe($.if(dev, $.sourcemaps.write()))
      .pipe(gulp.dest('.tmp/styles'))
      .pipe(reload({stream: true}));
  });
  
  gulp.task('scripts', () => {
    return gulp.src('app/scripts/**/*.js')
      .pipe($.plumber())
      .pipe($.if(dev, $.sourcemaps.init()))
      .pipe($.babel())
      .pipe($.if(dev, $.sourcemaps.write('.')))
      .pipe(gulp.dest('.tmp/scripts'))
      .pipe(reload({stream: true}));
  });
  
  function lint(files) {
    return gulp.src(files)
      .pipe($.eslint({ fix: true }))
      .pipe(reload({stream: true, once: true}))
      .pipe($.eslint.format())
      .pipe($.if(!browserSync.active, $.eslint.failAfterError()));
  }
  
  gulp.task('lint', () => {
    return lint('app/scripts/**/*.js')
      .pipe(gulp.dest('app/scripts'));
  });
  gulp.task('lint:test', () => {
    return lint('test/spec/**/*.js')
      .pipe(gulp.dest('test/spec'));
  });
  
  gulp.task('html', ['styles', 'scripts'], () => {
    return gulp.src('app/*.html')
      .pipe($.useref({searchPath: ['.tmp', 'app', '.']}))
      .pipe($.if(/\.js$/, $.uglify({compress: {drop_console: true}})))
      .pipe($.if(/\.css$/, $.cssnano({safe: true, autoprefixer: false})))
      .pipe($.if(/\.html$/, $.htmlmin({
        collapseWhitespace: true,
        minifyCSS: true,
        minifyJS: {compress: {drop_console: true}},
        processConditionalComments: true,
        removeComments: true,
        removeEmptyAttributes: true,
        removeScriptTypeAttributes: true,
        removeStyleLinkTypeAttributes: true
      })))
      .pipe(gulp.dest('dist'));
  });
  
  gulp.task('images', () => {
    return gulp.src('app/images/**/*')
      .pipe($.cache($.imagemin()))
      .pipe(gulp.dest('dist/images'));
  });
  
  gulp.task('fonts', () => {
    return gulp.src(require('main-bower-files')('**/*.{eot,svg,ttf,woff,woff2}', function (err) {})
      .concat('app/fonts/**/*'))
      .pipe($.if(dev, gulp.dest('.tmp/fonts'), gulp.dest('dist/fonts')));
  });
  
  gulp.task('extras', () => {
    return gulp.src([
      'app/*',
      '!app/*.html'
    ], {
      dot: true
    }).pipe(gulp.dest('dist'));
  });
  
  gulp.task('clean', del.bind(null, ['.tmp', 'dist']));
  
  gulp.task('serve', () => {
    runSequence(['clean', 'wiredep'], ['styles', 'scripts', 'fonts'], () => {
      browserSync.init({
        notify: false,
        port: 9000,
        server: {
          baseDir: ['.tmp', 'app'],
          routes: {
            '/bower_components': 'bower_components'
          }
        }
      });
  
      gulp.watch([
        'app/*.html',
        'app/images/**/*',
        '.tmp/fonts/**/*'
      ]).on('change', reload);
  
      gulp.watch('app/styles/**/*.scss', ['styles']);
      gulp.watch('app/scripts/**/*.js', ['scripts']);
      gulp.watch('app/fonts/**/*', ['fonts']);
      gulp.watch('bower.json', ['wiredep', 'fonts']);
    });
  });
  
  gulp.task('serve:dist', ['default'], () => {
    browserSync.init({
      notify: false,
      port: 9000,
      server: {
        baseDir: ['dist']
      }
    });
  });
  
  gulp.task('serve:test', ['scripts'], () => {
    browserSync.init({
      notify: false,
      port: 9000,
      ui: false,
      server: {
        baseDir: 'test',
        routes: {
          '/scripts': '.tmp/scripts',
          '/bower_components': 'bower_components'
        }
      }
    });
  
    gulp.watch('app/scripts/**/*.js', ['scripts']);
    gulp.watch(['test/spec/**/*.js', 'test/index.html']).on('change', reload);
    gulp.watch('test/spec/**/*.js', ['lint:test']);
  });
  
  // inject bower components
  gulp.task('wiredep', () => {
    gulp.src('app/styles/*.scss')
      .pipe($.filter(file => file.stat && file.stat.size))
      .pipe(wiredep({
        ignorePath: /^(\.\.\/)+/
      }))
      .pipe(gulp.dest('app/styles'));
  
    gulp.src('app/*.html')
      .pipe(wiredep({
        exclude: ['bootstrap-sass'],
        ignorePath: /^(\.\.\/)*\.\./
      }))
      .pipe(gulp.dest('app'));
  });
  
  gulp.task('build', ['lint', 'html', 'images', 'fonts', 'extras'], () => {
    return gulp.src('dist/**/*').pipe($.size({title: 'build', gzip: true}));
  });
  
  gulp.task('default', () => {
    return new Promise(resolve => {
      dev = false;
      runSequence(['clean', 'wiredep'], 'build', resolve);
    });
  });
  