gulpfile.js

// Include gulp
var gulp = require('gulp'); 

// Include Our Plugins
var jshint = require('gulp-jshint');
var sass = require('gulp-sass');
var concat = require('gulp-concat');
var uglify = require('gulp-uglify');
var rename = require('gulp-rename');
var browserSync = require('browser-sync').create();

// Lint Task
gulp.task('lint', function() {
    return gulp.src('js/*.js')
        .pipe(jshint())
        .pipe(jshint.reporter('default'));
});

gulp.task('sass', function() {
  return gulp.src('app/scss/**/*.scss') // Gets all files ending with .scss in app/scss
    .pipe(sass())
    .pipe(gulp.dest('app/css'))
    .pipe(browserSync.reload({
      stream: true
    }))
});

// Concatenate & Minify JS
gulp.task('scripts', function() {
    return gulp.src('js/*.js')
        .pipe(concat('all.js'))
        .pipe(gulp.dest('dist'))
        .pipe(rename('all.min.js'))
        .pipe(uglify())
        .pipe(gulp.dest('dist'));
});

gulp.task('browserSync', function() {
  browserSync.init({
    server: {
      baseDir: 'app'
    },
  })
})


gulp.task('html', function() {
  return gulp.src('app/**/*.html') // Gets all files ending with .scss in app/scss
    .pipe(browserSync.reload({
      stream: true
    }))
});


// Watch Files For Changes
gulp.task('watch', ['browserSync', 'sass'], function (){
  gulp.watch('app/scss/**/*.scss', ['sass']);
  gulp.watch('app/js/**/*.js', ['scripts']); 
  gulp.watch('app/index.html', ['html']); 
  // Other watchers
});

gulp.task('hello', function() {
  console.log('test');
});

// Default Task
gulp.task('default', ['lint', 'sass', 'scripts', 'watch']);