Babelify Gulp

gulpfile.js

gulp.task('js', function() {

    browserify({
        entries: './public/js/src/index.js',
        insertGlobals : true,
        fullPaths: true, // For discify
        debug: ! isProduction
    }).transform(babelify, {
            presets: ['es2015'],
            compact: false,
            global: true
        })
        .bundle()
        .pipe(source('index.js'))
        .pipe(buffer())
        .pipe(uglify())
        .pipe(gulp.dest('./public/js/dist'))
})