Added gulp with a configuration that allows compiling from es2015 to es5

Author: Lucas Vogel

.babelrc

@@ -0,0 +1,7 @@
+{
+	"presets": [
+		"es2015",
+		"stage-0"
+	],
+	"plugins": []
+}

.eslintrc

@@ -0,0 +1,37 @@
+{
+	"extends": "eslint:recommended",
+	"ecmaFeatures": {
+		"arrowFunctions": true,
+		"blockBindings": true,
+		"classes": true,
+		"defaultParams": true,
+		"destructering": true,
+		"spread": true,
+		"superInFunctions": true,
+		"templateStrings": true,
+		"unicodeCodePointEscapes": true,
+		"modules": true
+	},
+	"rules": {
+		"quotes": [2, "single"],
+		"eqeqeq": 2,
+		"curly": 2,
+		"camelcase": 2,
+		"strict": [2, "global"],
+		"no-var": 2,
+		"no-unused-vars": 2,
+		"no-console": 0,
+		"max-len": [2, 90, 4],
+		"semi": [2, "always"]
+	},
+	"parser": "babel-eslint",
+	"environment": {
+		"browser": true,
+		"es6": true
+	},
+	"settings": {
+		"ecmascript": 6,
+		"jsx": false
+	}
+}
+

dist/example.js

@@ -0,0 +1,6 @@
+(function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error("Cannot find module '"+o+"'");throw f.code="MODULE_NOT_FOUND",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s})({1:[function(require,module,exports){
+"use strict";
+
+var a = 1;
+
+},{}]},{},[1]);

gulpfile.js/index.js

@@ -0,0 +1,57 @@
+var gulp = require('gulp');
+var browserify = require('browserify');
+var babelify = require('babelify');
+var clean = require('gulp-clean');
+var argv = require('yargs').argv;
+var util = require('gulp-util');
+var source = require('vinyl-source-stream');
+var filesUtil = require('./util/filesUtil');
+
+var srcRoot = './src';
+var distRoot = './dist';
+var paths = {
+	src: {
+		root: srcRoot
+	},
+	dist: {
+		root: distRoot
+	}
+};
+
+gulp.task('clean', function() {
+	return gulp.src(paths.dist.root, {
+			read: false
+		})
+		.pipe(clean());
+});
+
+gulp.task('es2015-to-es5', ['clean'], function() {
+	var entryPath = argv.script || argv.s || srcRoot + '/' +
+			filesUtil.getLastModifiedFileInDir(srcRoot);
+	var outputFileName = argv.output || argv.o || 'scriptOutput.js';
+
+	if (!entryPath) {
+		util.beep();
+		util.log(util.colors.red(
+			'You must provide the path to the script ' +
+			'you want to compile. Use therefor -script or -s'));
+		return;
+	}
+
+	if (!outputFileName) {
+		util.beep();
+		util.log(util.colors.red(
+			'You must provide an output filename. ' +
+			'Use therefor -output or -o'));
+		return;
+	}
+
+	return browserify(entryPath)
+		.transform(babelify, {})
+		.bundle()
+		.on('error', util.log.bind(util, 'Browserify Error'))
+		.pipe(source(outputFileName))
+		.pipe(gulp.dest(distRoot));
+});
+
+gulp.task('default', ['es2015-to-es5']);

gulpfile.js/util/filesUtil.js

@@ -0,0 +1,23 @@
+var fs = require('fs');
+var recursive = require('recursive-readdir');
+
+var filesUtil = Object.create(null);
+
+filesUtil.getFilesByChronologicalOrderInDir = function(dir) {
+	var allFiles = fs.readdirSync(dir);
+	recursive(dir, function(err, files) {
+		if (err) { return; }
+		allFiles = files;
+	});
+	return allFiles.sort(function(a, b) {
+		return
+			fs.statSync(dir + a).mtime.getTime() -
+			fs.statSync(dir + b).mtime.getTime();
+	});
+};
+
+filesUtil.getLastModifiedFileInDir = function(dir) {
+	return filesUtil.getFilesByChronologicalOrderInDir(dir)[0];
+};
+
+module.exports = Object.create(filesUtil);

package.json

@@ -27,5 +27,18 @@
   "bugs": {
     "url": "https://github.com/vogelino/es2015-2-extendScript-build/issues"
   },
-  "homepage": "https://github.com/vogelino/es2015-2-extendScript-build#readme"
+  "homepage": "https://github.com/vogelino/es2015-2-extendScript-build#readme",
+  "devDependencies": {
+    "babel": "^6.5.2",
+    "babel-preset-es2015": "^6.6.0",
+    "babel-preset-stage-0": "^6.5.0",
+    "babelify": "^7.3.0",
+    "browserify": "^13.0.0",
+    "gulp": "^3.9.1",
+    "gulp-clean": "^0.3.2",
+    "gulp-util": "^3.0.7",
+    "recursive-readdir": "^2.0.0",
+    "vinyl-source-stream": "^1.1.0",
+    "yargs": "^4.6.0"
+  }
 }

src/example/index.js

@@ -0,0 +1,2 @@
+
+var a = 1;