gulpfile.js

var path = require('path');
var gulp = require('gulp');
var mainBowerFiles = require('main-bower-files');
var sass = require('gulp-sass');
var merge = require('merge-stream');
var autoprefixer = require('gulp-autoprefixer');
var minifyCSS = require('gulp-minify-css');
var runSequence = require('run-sequence');
var git = require('gulp-git');
var clean = require('gulp-clean');
var webserver = require('gulp-webserver');

var config = {
  bootstrapDir: './bower_components/bootstrap-sass',
  jqueryDir: './bower_components/jquery',
  distDir: './',
  srcDir: './scss',
  host: 'localhost',
  port: '8080'
};


gulp.task('styles', function() {
  gulp.src(config.srcDir + '/style.scss')
    .pipe(sass({
      includePaths: [config.bootstrapDir + '/assets/stylesheets'],
    }))
    .pipe(autoprefixer({
      browsers: ['last 2 version', 'iOS >= 8.1', 'Android >= 4.4'],
      cascade: false
    }))
    .pipe(minifyCSS({keepSpecialComments: 1}))
    .pipe(gulp.dest(config.distDir));
});

gulp.task('javascripts', function() {
  gulp.src(config.jqueryDir + '/dist/jquery.min.js')
    .pipe(gulp.dest(config.distDir + '/javascripts'));
  gulp.src(config.bootstrapDir + '/assets/javascripts/bootstrap.min.js')
    .pipe(gulp.dest(config.distDir + '/javascripts'));
});

gulp.task('fonts', function() {
  return gulp.src(config.bootstrapDir + '/assets/fonts/**/*')
    .pipe(gulp.dest(config.distDir + '/fonts'));
});

gulp.task('watch', function() {
  gulp.watch(config.srcDir + '**/*.html', ['html']);
  gulp.watch(config.srcDir + '**/*.scss', ['styles']);
  gulp.watch(config.srcDir + '**/*.js', ['javascripts']);
});

gulp.task('clean', function(callback) {
  return gulp.src('dist/*', {read: false})
    .pipe(clean());
});

gulp.task('build', function(callback) {
  runSequence('clean', ['styles', 'javascripts', 'fonts'], callback);
});

gulp.task('webserver', function() {
  gulp.src(config.distDir)
    .pipe(webserver({
      host: config.host,
      port: config.port,
      livereload: true
    }));
});

gulp.task('start', function(callback) {
  runSequence(
    'build',
    'webserver',
    'watch',
    callback
  )
});