diff --git a/src/main.js b/src/main.js
--- a/src/main.js
+++ b/src/main.js
@@ -3,4 +3,10 @@ import {blake2s} from "./blake.js";
 import {Chacha20} from "./chacha.js";
 
 export default {util,blake2s,Chacha20};
-	
\ No newline at end of file
+
+// export for tests running on Node
+if(typeof module!=='undefined'&&module.hasOwnProperty('exports')){
+	module.exports.util=util;
+	module.exports.blake2s=blake2s;
+	module.exports.Chacha20=Chacha20;
+}