From b270f20693e8b82e1b5ad4e7e19db2ded9a88c7e Mon Sep 17 00:00:00 2001
From: David Nagli <davidnagli@gmail.com>
Date: Sun, 22 Jul 2018 23:25:00 +0300
Subject: [PATCH 1/2] Add basic babel plugin autoinstall support

---
 src/transforms/babel.js | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/src/transforms/babel.js b/src/transforms/babel.js
index 841d6a65ba9..77f647cc59e 100644
--- a/src/transforms/babel.js
+++ b/src/transforms/babel.js
@@ -107,6 +107,14 @@ async function getBabelConfig(asset) {
   // Merge the babel-preset-env config and the babelrc if needed
   if (babelrc && !shouldIgnoreBabelrc(asset.name, babelrc)) {
     if (envConfig) {
+      // Auto Install any missing babel plugins
+      if(babelrc.plugins){
+        for(let plugin of babelrc.plugins){
+          let pluginName = getPluginName(plugin);
+          await localRequire(`babel-plugin-${pluginName}`, asset.name)
+        }
+      }
+
       // Filter out presets that are already applied by babel-preset-env
       if (Array.isArray(babelrc.presets)) {
         babelrc.presets = babelrc.presets.filter(preset => {

From cd1b130ac428aae1b585085e2669bc87b12b2cde Mon Sep 17 00:00:00 2001
From: David Nagli <davidnagli@gmail.com>
Date: Sun, 22 Jul 2018 23:35:54 +0300
Subject: [PATCH 2/2] Add basic babel preset autoinstall support

---
 src/transforms/babel.js | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/src/transforms/babel.js b/src/transforms/babel.js
index 77f647cc59e..4a97a5f6356 100644
--- a/src/transforms/babel.js
+++ b/src/transforms/babel.js
@@ -115,6 +115,13 @@ async function getBabelConfig(asset) {
         }
       }
 
+      // Autoinstall any missing babel presets
+      if(babelrc.presets){
+        for(let preset of babelrc.presets){
+          await localRequire(`babel-preset-${preset}`, asset.name)
+        }
+      }
+
       // Filter out presets that are already applied by babel-preset-env
       if (Array.isArray(babelrc.presets)) {
         babelrc.presets = babelrc.presets.filter(preset => {