From 6b37080b13b22a38d2ca6118c51bd5db1d4d2a4b Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Oskar=20Sch=C3=B6ldstr=C3=B6m?= <public@oxy.fi>
Date: Tue, 10 Jan 2017 12:21:25 -0500
Subject: [PATCH 1/2] Allow autoprefixer's browser versions to be configured

---
 assets/build/config.js         | 1 +
 assets/build/webpack.config.js | 2 +-
 assets/config.json             | 7 ++++++-
 3 files changed, 8 insertions(+), 2 deletions(-)

diff --git a/assets/build/config.js b/assets/build/config.js
index b77763d..c1e6772 100644
--- a/assets/build/config.js
+++ b/assets/build/config.js
@@ -26,6 +26,7 @@ const config = mergeWithConcat({
     watcher: !!argv.watch,
   },
   watch: [],
+  browsers: [],
 }, userConfig);
 
 config.watch.push(`${path.basename(config.paths.assets)}/${config.copy}`);
diff --git a/assets/build/webpack.config.js b/assets/build/webpack.config.js
index 5ba816a..c3e746b 100644
--- a/assets/build/webpack.config.js
+++ b/assets/build/webpack.config.js
@@ -155,7 +155,7 @@ let webpackConfig = {
         output: { path: config.paths.dist },
         context: config.paths.assets,
         postcss: [
-          autoprefixer({ browsers: ['last 2 versions', 'android 4', 'opera 12'] }),
+          autoprefixer({ browsers: config.browsers }),
         ],
       },
     }),
diff --git a/assets/config.json b/assets/config.json
index 084d143..96815a6 100644
--- a/assets/config.json
+++ b/assets/config.json
@@ -15,5 +15,10 @@
   "publicPath": "/app/themes/sage",
   "devUrl": "http://example.dev",
   "proxyUrl": "http://localhost:3000",
-  "cacheBusting": "[name]_[hash:8]"
+  "cacheBusting": "[name]_[hash:8]",
+  "browsers": [
+    "last 2 versions",
+    "android 4",
+    "opera 12"
+  ]
 }

From f4cf20b94ff5aed6f3eea2f2ea4174db37a2c3e8 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Oskar=20Sch=C3=B6ldstr=C3=B6m?= <public@oxy.fi>
Date: Tue, 10 Jan 2017 12:22:01 -0500
Subject: [PATCH 2/2] Respect autoprefixer browsers when stripping vendor
 prefixes with cssnano

---
 assets/build/webpack.config.optimize.js | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/assets/build/webpack.config.optimize.js b/assets/build/webpack.config.optimize.js
index 5de2720..d77c389 100644
--- a/assets/build/webpack.config.optimize.js
+++ b/assets/build/webpack.config.optimize.js
@@ -11,7 +11,10 @@ module.exports = {
   plugins: [
     new OptimizeCssAssetsPlugin({
       cssProcessor: cssnano,
-      cssProcessorOptions: { discardComments: { removeAll: true } },
+      cssProcessorOptions: {
+        discardComments: { removeAll: true },
+        autoprefixer: { browsers: config.browsers },
+      },
       canPrint: true,
     }),
     new ImageminPlugin({