gulpfile.js

"use strict";

var gulp       = require("gulp"),
    sourcemaps = require("gulp-sourcemaps"),
    babel      = require("gulp-babel"),
    concat     = require("gulp-concat"),
    uglify     = require("gulp-uglify"),
    rename     = require("gulp-rename"),
    del        = require("del");

gulp.task("js", function() {
	return gulp.src("src/**/*.js")
		.pipe(sourcemaps.init({ loadMaps: true }))
		.pipe(concat("main.js"))
		.pipe(babel())
		.pipe(gulp.dest("dist"))
		.pipe(rename({ suffix: ".min" }))
		.pipe(uglify())
		.pipe(sourcemaps.write("./", { includeContent: false }))
		.pipe(gulp.dest("dist"));
});

gulp.task("resources", ["js"]);

gulp.task("clean", function(cb) {
	del(["dist/*"], cb);
});

gulp.task("default", ["clean"], function() {
	gulp.start("resources");
});

gulp.task("watch", function() {
  gulp.watch("src/**/*.js", ["default"]);
});