diff --git a/packages/syntax-playground/webpack.config.js b/packages/syntax-playground/webpack.config.js
index 38a73a3..4371d27 100644
--- a/packages/syntax-playground/webpack.config.js
+++ b/packages/syntax-playground/webpack.config.js
@@ -1,4 +1,7 @@
 module.exports = {
   entry: "./lib/index.js",
   mode: "development",
+  externals: {
+    crypto: 'null'
+  },
 };