diff --git a/externs/externs.js b/externs/externs.js
index bbccb9e30d..fe90dc972e 100644
--- a/externs/externs.js
+++ b/externs/externs.js
@@ -15,7 +15,9 @@ var TopLevel = {
 "capture" : function () {},
 "catch" : function () {},
 "Chance" : function () {},
+"clearCookies" : function () {},
 "clearInterval" : function () {},
+"clearStorageAPIs" : function () {},
 "clearTimeout" : function () {},
 "Clipboard" : function () {},
 "cloneWithRows" : function () {},
@@ -42,15 +44,14 @@ var TopLevel = {
 "DeviceEventEmitter" : function () {},
 "digest" : function () {},
 "Dimensions" : function () {},
-"disableYellowBox" : function () {},
 "discardTransaction" : function () {},
 "dy" : function () {},
 "encrypt" : function () {},
 "ENC_DEC" : function () {},
 "end" : function () {},
 "endCoordinates" : function () {},
+"Error" : function () {},
 "eth" : function () {},
-"getBlock" : function () {},
 "event" : function () {},
 "fallbacks" : function () {},
 "fetch" : function () {},
@@ -64,10 +65,13 @@ var TopLevel = {
 "generate" : function () {},
 "get" : function () {},
 "getAll" : function () {},
+"getBlock" : function () {},
+"getCardId" : function () {},
+"getExample" : function () {},
 "getInitialOrientation" : function () {},
 "getLayout" : function () {},
 "getNumber" : function () {},
-"getExample" : function () {},
+"getSyncing" : function () {},
 "getTime" : function () {},
 "getTimezoneOffset" : function () {},
 "goog" : function () {},
@@ -76,6 +80,8 @@ var TopLevel = {
 "height" : function () {},
 "hex" : function () {},
 "hide" : function () {},
+"HttpProvider" : function () {},
+"IBGLog" : function () {},
 "indexOf" : function () {},
 "initialPage" : function () {},
 "initJail" : function () {},
@@ -83,8 +89,6 @@ var TopLevel = {
 "isConnected" : function () {},
 "isMatches" : function () {},
 "isMobile" : function () {},
-"isSyncing" : function () {},
-"getSyncing" : function () {},
 "isValid" : function () {},
 "Item" : function () {},
 "JSON" : function () {},
@@ -92,6 +96,7 @@ var TopLevel = {
 "Keyboard" : function () {},
 "layout" : function () {},
 "length" : function () {},
+"Linking" : function () {},
 "locale" : function () {},
 "lockToPortrait" : function () {},
 "log" : function () {},
@@ -103,10 +108,12 @@ var TopLevel = {
 "moveY" : function () {},
 "nativeEvent" : function () {},
 "NativeModules" : function () {},
+"Number" : function () {},
 "objects" : function () {},
 "open" : function () {},
 "openDrawer" : function () {},
 "openPicker" : function () {},
+"openURL" : function () {},
 "OS" : function () {},
 "p" : function () {},
 "panHandlers" : function () {},
@@ -115,20 +122,21 @@ var TopLevel = {
 "parse" : function () {},
 "parseInt" : function () {},
 "parseJail" : function () {},
-"clearCookies": function () {},
-"clearStorageAPIs": function () {},
 "path" : function () {},
 "Platform" : function () {},
 "post" : function () {},
 "prototype" : function () {},
+"providers" : function () {},
 "push" : function () {},
 "random" : function () {},
 "randomBytes" : function () {},
 "ReactNative" : function () {},
 "readFile" : function () {},
+"readTag" : function () {},
 "realm-class" : function () {},
 "recoverAccount" : function () {},
 "registerComponent" : function () {},
+"reload" : function () {},
 "remove" : function () {},
 "removeAllListeners" : function () {},
 "require" : function () {},
@@ -166,6 +174,7 @@ var TopLevel = {
 "startsWith" : function () {},
 "Status" : function () {},
 "status" : function () {},
+"stop" : function () {},
 "stopAnimation" : function () {},
 "stopNodeRPCServer" : function () {},
 "stopWatching" : function () {},
@@ -175,9 +184,12 @@ var TopLevel = {
 "text" : function () {},
 "then" : function () {},
 "timing" : function () {},
+"toAscii" : function () {},
 "toBits" : function () {},
 "toDecimal" : function () {},
+"toLocaleString" : function () {},
 "toLowerCase" : function () {},
+"toNumber" : function () {},
 "toString" : function () {},
 "toUtf8" : function () {},
 "translations" : function () {},
@@ -189,27 +201,11 @@ var TopLevel = {
 "vy" : function () {},
 "Web3" : function () {},
 "web3" : function () {},
-"providers" : function () {},
-"HttpProvider": function () {},
 "width" : function () {},
 "window" : function () {},
 "write" : function () {},
+"writeTag" : function () {},
 "x" : function () {},
 "y" : function () {},
-"_value" : function () {},
-"ListView": function() {},
-"DataSource": function() {},
-"IBGLog": function() {},
-"getCardId": function() {},
-"readTag": function() {},
-"writeTag": function() {},
-"Error": function() {},
-"Linking": function() {},
-"reload": function() {},
-"stop": function() {},
-"toLocaleString": function() {},
-"openURL": function() {},
-"Number" : function () {},
-"toAscii" : function () {},
-"toNumber" : function () {}
-};
+"_value" : function () {}
+}
\ No newline at end of file
diff --git a/project.clj b/project.clj
index ed3536b058..2c70636bc0 100644
--- a/project.clj
+++ b/project.clj
@@ -12,12 +12,14 @@
                  [tailrecursion/cljs-priority-map "1.2.0"]
                  [com.taoensso/timbre "4.7.4"]]
   :plugins [[lein-cljsbuild "1.1.4"]
-            [lein-figwheel "0.5.8"]]
+            [lein-figwheel "0.5.8"]
+            [rasom/lein-externs "0.1.7"]]
   :clean-targets ["target/" "index.ios.js" "index.android.js"]
   :aliases {"prod-build" ^{:doc "Recompile code with prod profile."}
                          ["do" "clean"
                           ["with-profile" "prod" "cljsbuild" "once" "ios"]
-                          ["with-profile" "prod" "cljsbuild" "once" "android"]]}
+                          ["with-profile" "prod" "cljsbuild" "once" "android"]]
+            "generate-externs" ["with-profile" "prod" "externs" "android" "externs/externs.js"]}
   :test-paths ["test/clj"]
   :figwheel {:nrepl-port 7888}
   :profiles {:dev  {:dependencies [[figwheel-sidecar "0.5.8"]