n-api: throw when entry point is null

PR-URL: https://github.com/nodejs/node/pull/20779
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>

1 files changed, 6 insertions, 0 deletions

diff --git a/src/node_api.cc b/src/node_api.cc
index fb3ea5df2c..a83244131f 100644
--- a/src/node_api.cc
+++ b/src/node_api.cc
@@ -868,6 +868,12 @@ void napi_module_register_by_symbol(v8::Local<v8::Object> exports,
                                     v8::Local<v8::Value> module,
                                     v8::Local<v8::Context> context,
                                     napi_addon_register_func init) {
+  if (init == nullptr) {
+    node::Environment::GetCurrent(context)->ThrowError(
+        "Module has no declared entry point.");
+    return;
+  }
+
   // Create a new napi_env for this module or reference one if a pre-existing
   // one is found.
   napi_env env = v8impl::GetEnv(context);