From 47c8ce650c98ffa040483a82b82db6a36ebd935d Mon Sep 17 00:00:00 2001
From: Glen Cheney <cheney.glen@gmail.com>
Date: Tue, 20 Feb 2018 12:17:34 -0800
Subject: [PATCH] Add es module file.

---
 .gitignore     |  2 ++
 gulp/config.js | 16 ++++++++++++++++
 package.json   |  1 +
 3 files changed, 19 insertions(+)

diff --git a/.gitignore b/.gitignore
index b80a1f5..fd31e15 100644
--- a/.gitignore
+++ b/.gitignore
@@ -5,6 +5,8 @@ _site
 .sass-cache
 .jekyll-metadata
 *.scssc
+*.esm.js
+*.esm.js.map
 
 # https://github.com/sindresorhus/ama/issues/479#issuecomment-310661514
 package-lock.json
diff --git a/gulp/config.js b/gulp/config.js
index e7fd242..59d22be 100644
--- a/gulp/config.js
+++ b/gulp/config.js
@@ -42,6 +42,22 @@ module.exports.configs = [
     ],
   },
 
+  {
+    input: entry,
+    output: {
+      name: moduleName,
+      file: './dist/shuffle.esm.js',
+      sourcemap,
+      format: 'es',
+    },
+    cache: undefined,
+    plugins: [
+      resolve(),
+      commonjs(commonjsOptions),
+      babel(babelOptions),
+    ],
+  },
+
   {
     input: entry,
     output: {
diff --git a/package.json b/package.json
index de1df5d..62281d2 100644
--- a/package.json
+++ b/package.json
@@ -15,6 +15,7 @@
     "tiles"
   ],
   "main": "dist/shuffle.js",
+  "module": "dist/shuffle.esm.js",
   "moduleSource": "src/shuffle.js",
   "types": "index.d.ts",
   "scripts": {