gulpfile.js

var gulp = require('gulp'),
    uglify = require('gulp-uglify'),
    webserver = require('gulp-webserver'),
    watch = require('gulp-watch'),
    sass = require('gulp-sass');

gulp.task('uglify', function() {
    gulp.src('./src/*.js')
        .pipe(uglify())
        .pipe(gulp.dest('dist'));
});

gulp.task('sass', function() {
    gulp.src('./src/*.scss')
        .pipe(sass())
        .pipe(gulp.dest('dist'));
});

gulp.task('webserver', function() {
    gulp.src('.')
        .pipe(webserver({
            host: 'localhost',
            port: 8000,
            livereload: true,
            directoryListing: false,
            open: false,
            fallback: 'example.html'
        }));
});

gulp.task('watch', function(){
    gulp.watch('./src/*.scss', ['sass']);
    gulp.watch('./src/*.js', ['uglify']);
});

gulp.task('build', ['uglify', 'sass']);

gulp.task('default', ['build', 'webserver', 'watch']);