Add new Node JS file to build.yaml
diff --git a/package.json b/package.json
index 7ab4ea5..f9e3384 100644
--- a/package.json
+++ b/package.json
@@ -84,6 +84,7 @@
     "src/node/src/client.js",
     "src/node/src/common.js",
     "src/node/src/credentials.js",
+    "src/node/src/grpc_extension.js",
     "src/node/src/metadata.js",
     "src/node/src/server.js",
     "include/grpc/grpc_security.h",