gulpfile

var plumber = require("gulp-plumber");
var through = require("through2");
var gutil   = require("gulp-util");
var gulp    = require("gulp");
var babel   = require("gulp-babel");
var watch   = require("gulp-watch");

var scripts = "./src/**/*.js";
var dest = "build";

var srcEx, libFragment;

gulp.task("default", ["build"]);

gulp.task("build", function () {
    return gulp.src(scripts, {base: "."})
	.pipe(watch(scripts))
    .pipe(plumber({
      errorHandler: function (err) {
        gutil.log(err.stack);
      }
    }))
/*    .pipe(through.obj(function (file, enc, callback) {
      file._path = file.path;
      file.path = file.path.replace(srcEx, libFragment);
      callback(null, file);
    }))
    .pipe(through.obj(function (file, enc, callback) {
      gutil.log("Compiling", "'" + chalk.cyan(file._path) + "'...");
      callback(null, file);
    }))
*/
    .pipe(babel())
	.pipe(gulp.dest(dest));
});

gulp.task("watch", ["build"], function (callback) {
  watch(scripts, function () {
    gulp.start("build");
  });
});