diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index db5fd2b..9a38b57 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -22,3 +22,7 @@ jobs:
       - run: npm ci
       - run: npm run build
       - run: npm test
+      - working-directory: examples
+        run: npm run build
+      - working-directory: examples
+        run: npm test
diff --git a/examples/package.json b/examples/package.json
index 6a0b439..1ccc09f 100644
--- a/examples/package.json
+++ b/examples/package.json
@@ -5,6 +5,7 @@
   "license": "ISC",
   "private": true,
   "scripts": {
-    "build": "../node_modules/.bin/rollup -c"
+    "build": "../node_modules/.bin/rollup -c",
+    "test": "sh test.sh"
   }
 }
diff --git a/examples/test.sh b/examples/test.sh
new file mode 100755
index 0000000..6b15058
--- /dev/null
+++ b/examples/test.sh
@@ -0,0 +1,6 @@
+#!/bin/sh
+set -e
+
+node dist/factory.js | grep -q "factory { one: 'one', other: 'other' }" && echo "factory ok" || (echo "factory failed" && false)
+node dist/ponyfill.js | grep -q "ponyfill { one: 'one', othe: 'other' }" && echo "ponyfill ok" || (echo "ponyfill failed" && false)
+node dist/polyfill.js | grep -q "{ one: 'one', other: 'other' }" && echo "polyfill ok" || (echo "polyfill failed" && false)