From eb5d9806839c9b31bac51b94da5cec5b926b55e6 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Mateusz=20Burzy=C5=84ski?= <mateuszburzynski@gmail.com>
Date: Thu, 12 Apr 2018 10:12:12 +0200
Subject: [PATCH] Generate externals dynamically from pkg.json

---
 rollup.config.js | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/rollup.config.js b/rollup.config.js
index 2080f75b..ff01dc4f 100644
--- a/rollup.config.js
+++ b/rollup.config.js
@@ -4,6 +4,7 @@ import flow from 'rollup-plugin-flow'
 import commonjs from 'rollup-plugin-commonjs'
 import uglify from 'rollup-plugin-uglify'
 import replace from 'rollup-plugin-replace'
+import pkg from './package.json'
 
 const minify = process.env.MINIFY
 const format = process.env.FORMAT
@@ -46,7 +47,12 @@ export default {
     },
     output
   ),
-  external: ['react', 'prop-types', 'final-form'],
+  external: umd
+    ? Object.keys(pkg.peerDependencies || {})
+    : [
+      ...Object.keys(pkg.dependencies || {}),
+      ...Object.keys(pkg.peerDependencies || {}),
+    ],
   plugins: [
     resolve({ jsnext: true, main: true }),
     flow(),