diff --git a/package.json b/package.json
index 5cf5c80..ab4f6f4 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,7 @@
 {
   "private": true,
   "devDependencies": {
+    "gzip-size-cli": "^2.1.0",
     "karma": "1.7.1",
     "karma-chrome-launcher": "2.2.0",
     "karma-cljs-test": "0.1.0",
diff --git a/project.clj b/project.clj
index ecb0adb..68f82f9 100644
--- a/project.clj
+++ b/project.clj
@@ -4,7 +4,7 @@
   :description "A simple ClojureScript interface to React"
 
   :dependencies [[org.clojure/clojure "1.8.0"]
-                 [org.clojure/clojurescript "1.9.946"]
+                 [org.clojure/clojurescript "1.10.126"]
                  ;; If :npm-deps enabled, these are used only for externs.
                  ;; Without direct react dependency, other packages,
                  ;; like react-leaflet might have closer dependency to a other version.
diff --git a/test-environments/browser-umd-prod/test.sh b/test-environments/browser-umd-prod/test.sh
index bb788bf..c015e8e 100755
--- a/test-environments/browser-umd-prod/test.sh
+++ b/test-environments/browser-umd-prod/test.sh
@@ -2,3 +2,4 @@
 set -ex
 lein do clean, doo chrome-headless prod-test once
 test -f target/cljsbuild/prod-test/main.js
+../../node_modules/.bin/gzip-size target/cljsbuild/prod-test/main.js
diff --git a/test-environments/node-foreign-libs/demo b/test-environments/node-foreign-libs/demo
new file mode 120000
index 0000000..bf71256
--- /dev/null
+++ b/test-environments/node-foreign-libs/demo
@@ -0,0 +1 @@
+../../demo
\ No newline at end of file
diff --git a/test-environments/node-foreign-libs/examples b/test-environments/node-foreign-libs/examples
new file mode 120000
index 0000000..d15735c
--- /dev/null
+++ b/test-environments/node-foreign-libs/examples
@@ -0,0 +1 @@
+../../examples
\ No newline at end of file
diff --git a/test-environments/node-foreign-libs/package-lock.json b/test-environments/node-foreign-libs/package-lock.json
new file mode 120000
index 0000000..322001a
--- /dev/null
+++ b/test-environments/node-foreign-libs/package-lock.json
@@ -0,0 +1 @@
+../../package-lock.json
\ No newline at end of file
diff --git a/test-environments/node-foreign-libs/package.json b/test-environments/node-foreign-libs/package.json
new file mode 120000
index 0000000..138a42c
--- /dev/null
+++ b/test-environments/node-foreign-libs/package.json
@@ -0,0 +1 @@
+../../package.json
\ No newline at end of file
diff --git a/test-environments/node-foreign-libs/project.clj b/test-environments/node-foreign-libs/project.clj
new file mode 120000
index 0000000..3737a29
--- /dev/null
+++ b/test-environments/node-foreign-libs/project.clj
@@ -0,0 +1 @@
+../../project.clj
\ No newline at end of file
diff --git a/test-environments/node-foreign-libs/site b/test-environments/node-foreign-libs/site
new file mode 120000
index 0000000..94a7c71
--- /dev/null
+++ b/test-environments/node-foreign-libs/site
@@ -0,0 +1 @@
+../../site
\ No newline at end of file
diff --git a/test-environments/node-foreign-libs/src b/test-environments/node-foreign-libs/src
new file mode 120000
index 0000000..929cb3d
--- /dev/null
+++ b/test-environments/node-foreign-libs/src
@@ -0,0 +1 @@
+../../src
\ No newline at end of file
diff --git a/test-environments/node-foreign-libs/test b/test-environments/node-foreign-libs/test
new file mode 120000
index 0000000..9a3b79e
--- /dev/null
+++ b/test-environments/node-foreign-libs/test
@@ -0,0 +1 @@
+../../test
\ No newline at end of file
diff --git a/test-environments/node-foreign-libs/test.sh b/test-environments/node-foreign-libs/test.sh
new file mode 100755
index 0000000..7bdb897
--- /dev/null
+++ b/test-environments/node-foreign-libs/test.sh
@@ -0,0 +1,4 @@
+#!/bin/bash
+set -ex
+lein do clean, doo node node-test once
+test -f target/cljsbuild/node-test/out/cljsjs/react/development/react.inc.js