From f3da583c3272adf61e362f8983d7888820f6b19f Mon Sep 17 00:00:00 2001
From: Gary Green <holegary@gmail.com>
Date: Fri, 19 Apr 2019 22:10:44 +0100
Subject: [PATCH] Use rollup to bundle.

---
 Sortable.js      | 26 ++++++--------------------
 gulpfile.js      | 45 ---------------------------------------------
 index-es.js      |  7 +++++++
 index-iife.js    |  3 +++
 index.html       |  2 +-
 package.json     | 15 +++++++--------
 rollup.config.js | 13 +++++++++++++
 7 files changed, 37 insertions(+), 74 deletions(-)
 delete mode 100644 gulpfile.js
 create mode 100644 index-es.js
 create mode 100644 index-iife.js
 create mode 100644 rollup.config.js

diff --git a/Sortable.js b/Sortable.js
index eeb0ba4c7..eddab4807 100644
--- a/Sortable.js
+++ b/Sortable.js
@@ -5,26 +5,12 @@
  * @license MIT
  */
 
-(function sortableModule(factory) {
-	"use strict";
+"use strict";
 
-	if (typeof define === "function" && define.amd) {
-		define(factory);
-	}
-	else if (typeof module != "undefined" && typeof module.exports != "undefined") {
-		module.exports = factory();
-	}
-	else {
-		/* jshint sub:true */
-		window["Sortable"] = factory();
-	}
-})(function sortableFactory() {
-	"use strict";
+import { version } from './package.json';
 
 	if (typeof window === "undefined" || !window.document) {
-		return function sortableError() {
-			throw new Error("Sortable.js requires a window with a document");
-		};
+		throw new Error("Sortable.js requires a window with a document");
 	}
 
 	var dragEl,
@@ -2455,6 +2441,6 @@
 
 
 	// Export
-	Sortable.version = '1.9.0';
-	return Sortable;
-});
+	Sortable.version = version;
+
+	export default Sortable;
diff --git a/gulpfile.js b/gulpfile.js
deleted file mode 100644
index 8e45f1fdf..000000000
--- a/gulpfile.js
+++ /dev/null
@@ -1,45 +0,0 @@
-/* jshint ignore:start */
-const gulp = require('gulp'),
-	uglify = require('gulp-uglify'),
-	rename = require('gulp-rename'),
-	each = require('gulp-each'),
-	path = require('path'),
-	pump = require('pump')
-;
-
-const package = require('./package.json'),
-	  name = package.exportName,
-	  versionExp = /(?<=\"version\":\s{0,}\")(.{0,})(?=\")/i;
-
-gulp.task('version', function() {
-	let version = package.version;
-	return pump([
-		gulp.src('./*.json'),
-		each(function(content, file, callback){
-			let prevVersion = content.match(versionExp);
-			prevVersion && (prevVersion = prevVersion[0]);
-			content = content.replace(versionExp, version);
-			prevVersion && prevVersion !== version && console.info(`Updated version in ${ path.basename(file.history[0]) }:\t${ prevVersion } -> ${ version }`);
-			callback(null, content);
-		}),
-		gulp.dest('./')
-	]);
-});
-
-gulp.task('minify', function() {
-	return pump([
-		gulp.src(`./${ name }.js`),
-		uglify({
-			output: {
-				preamble: `/*! ${ name } ${ package.version } - ${ package.license } | ${ package.repository.url } */\n`
-			}
-		}),
-		rename({
-			suffix: '.min'
-		}),
-		gulp.dest(`./`)
-	]);
-});
-
-gulp.task('build', gulp.series('version', 'minify'));
-/* jshint ignore:end */
diff --git a/index-es.js b/index-es.js
new file mode 100644
index 000000000..52aa405d3
--- /dev/null
+++ b/index-es.js
@@ -0,0 +1,7 @@
+import Sortable from './Sortable';
+
+export default Sortable;
+
+export {
+    Sortable
+}
\ No newline at end of file
diff --git a/index-iife.js b/index-iife.js
new file mode 100644
index 000000000..8f711ebcc
--- /dev/null
+++ b/index-iife.js
@@ -0,0 +1,3 @@
+import Sortable from './Sortable';
+
+export default Sortable;
diff --git a/index.html b/index.html
index f3c010e33..93457377c 100644
--- a/index.html
+++ b/index.html
@@ -365,7 +365,7 @@ <h3 class="col-6"><a target="_blank" href="https://github.com/SortableJS/polymer
 
 
 	<!-- Latest Sortable -->
-	<script src="./Sortable.js"></script>
+	<script src="dist/sortable.js"></script>
 
 	<script type="text/javascript" src="st/prettify/prettify.js"></script>
 	<script type="text/javascript" src="st/prettify/run_prettify.js"></script>
diff --git a/package.json b/package.json
index 88ee1f22a..896adb918 100644
--- a/package.json
+++ b/package.json
@@ -3,18 +3,17 @@
 	"exportName": "Sortable",
 	"version": "1.9.0",
 	"devDependencies": {
-		"gulp": "^4.0.0",
-		"gulp-each": "^0.5.0",
-		"gulp-rename": "^1.4.0",
-		"gulp-uglify": "^3.0.1",
-		"http-server": "^0.9.0",
-		"pump": "^3.0.0"
+		"rollup": "^1.10.1",
+		"uglify-js": "^3.5.5"
 	},
 	"description": "JavaScript library for reorderable drag-and-drop lists on modern browsers and touch devices. No jQuery required. Supports Meteor, AngularJS, React, Polymer, Vue, Knockout and any CSS library, e.g. Bootstrap.",
 	"main": "Sortable.js",
+	"module": "index-es.js",
 	"scripts": {
-		"http-server": "http-server -s ./",
-		"prepublish": "gulp build"
+		"prepublish": "npm run build",
+		"build": "rollup -c rollup.config.js && npm run min",
+		"min": "uglifyjs -mangle --comments=/@license/ -o dist/sortable.min.js -- dist/sortable.js",
+		"watch": "npm run build -- --watch"
 	},
 	"maintainers": [
 		"Konstantin Lebedev <ibnRubaXa@gmail.com>",
diff --git a/rollup.config.js b/rollup.config.js
new file mode 100644
index 000000000..2bec24110
--- /dev/null
+++ b/rollup.config.js
@@ -0,0 +1,13 @@
+import json from 'rollup-plugin-json';
+
+export default [
+  {
+    input: 'index-iife.js',
+    output: {
+      file: 'dist/sortable.js',
+      format: 'iife',
+      name: 'Sortable'
+    },
+    plugins: [json()]
+  }
+];