From f4eb2bb5433d2a27e2d819bc7e82f0dd41cd04fd Mon Sep 17 00:00:00 2001
From: Josep Sayol <josep.sayol@gmail.com>
Date: Fri, 16 Nov 2018 15:07:33 +0100
Subject: [PATCH 1/3] Generate smaller bundles (take 2)

---
 packages/firebase/rollup.config.js | 20 +++++++++++++++++---
 1 file changed, 17 insertions(+), 3 deletions(-)

diff --git a/packages/firebase/rollup.config.js b/packages/firebase/rollup.config.js
index ae5aa2e1ead..08053178366 100644
--- a/packages/firebase/rollup.config.js
+++ b/packages/firebase/rollup.config.js
@@ -49,6 +49,20 @@ const plugins = [
 
 const external = Object.keys(pkg.dependencies || {});
 
+const uglifyOptions = {
+  mangle: {
+    properties: {
+      keep_quoted: true,
+      regex: /_$|^_/
+    }
+  },
+  compress: {
+    passes: 3,
+    unsafe: true,
+    warnings: false,
+  }
+};
+
 /**
  * Global UMD Build
  */
@@ -81,7 +95,7 @@ const appBuilds = [
       format: 'umd',
       name: GLOBAL_NAME
     },
-    plugins: [...plugins, uglify()]
+    plugins: [...plugins, uglify(uglifyOptions)]
   }
 ];
 
@@ -138,7 +152,7 @@ const componentBuilds = components
               );
             }`
         },
-        plugins: [...plugins, uglify()],
+        plugins: [...plugins, uglify(component !== 'auth' ? uglifyOptions : {})],
         external: ['@firebase/app']
       }
     ];
@@ -168,7 +182,7 @@ const completeBuilds = [
       format: 'umd',
       name: GLOBAL_NAME
     },
-    plugins: [...plugins, uglify()]
+    plugins: [...plugins, uglify(uglifyOptions)]
   },
   /**
    * App Node.js Builds

From be11c73ca36af39b83c9bcc5a95c8acc0e7056f7 Mon Sep 17 00:00:00 2001
From: Josep Sayol <josep.sayol@gmail.com>
Date: Fri, 16 Nov 2018 23:41:07 +0100
Subject: [PATCH 2/3] Address review comment

---
 packages/firebase/rollup.config.js | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/packages/firebase/rollup.config.js b/packages/firebase/rollup.config.js
index 08053178366..ab4a494778c 100644
--- a/packages/firebase/rollup.config.js
+++ b/packages/firebase/rollup.config.js
@@ -57,9 +57,7 @@ const uglifyOptions = {
     }
   },
   compress: {
-    passes: 3,
-    unsafe: true,
-    warnings: false,
+    passes: 3
   }
 };
 
@@ -152,7 +150,10 @@ const componentBuilds = components
               );
             }`
         },
-        plugins: [...plugins, uglify(component !== 'auth' ? uglifyOptions : {})],
+        plugins: [
+          ...plugins,
+          uglify(component !== 'auth' ? uglifyOptions : {})
+        ],
         external: ['@firebase/app']
       }
     ];

From 847868fe6861288747fe5b60f16b4f4fd2903976 Mon Sep 17 00:00:00 2001
From: Josep Sayol <josep.sayol@gmail.com>
Date: Wed, 21 Nov 2018 00:02:49 +0100
Subject: [PATCH 3/3] Prevent mangling properties with double underscore

---
 packages/firebase/rollup.config.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/packages/firebase/rollup.config.js b/packages/firebase/rollup.config.js
index ab4a494778c..c8f44ddf87e 100644
--- a/packages/firebase/rollup.config.js
+++ b/packages/firebase/rollup.config.js
@@ -53,7 +53,7 @@ const uglifyOptions = {
   mangle: {
     properties: {
       keep_quoted: true,
-      regex: /_$|^_/
+      regex: /(^_[^_])|([^_]_$)/
     }
   },
   compress: {