Fix after merge

library/agent/hooks/wrapNewInstance.test.ts

@@ -115,7 +115,9 @@ t.test("Errors in interceptor are caught", async (t) => {
 
   const instance = new exports.test("input");
   t.same(instance.getInput(), "input");
-  t.same(logger.getMessages(), ["Failed to wrap method test in module test"]);
+  t.same(logger.getMessages(), [
+    "Failed to wrap method test in module test: test error",
+  ]);
 });
 
 t.test("Return value from interceptor is returned", async (t) => {
@@ -162,6 +164,6 @@ t.test("Logs error when wrapping default export", async (t) => {
   const instance = new exports("input");
   t.same(instance.getInput(), "input");
   t.same(logger.getMessages(), [
-    "Failed to wrap method default export in module test",
+    "Failed to wrap method default export in module test: test error",
   ]);
 });

library/agent/hooks/wrapNewInstance.ts

@@ -34,10 +34,13 @@ export function wrapNewInstance(
               return returnVal;
             }
           } catch (error) {
-            agent.onFailedToWrapMethod(
-              pkgInfo.name,
-              className || "default export"
-            );
+            if (error instanceof Error) {
+              agent.onFailedToWrapMethod(
+                pkgInfo.name,
+                className || "default export",
+                error
+              );
+            }
           }
 
           return newInstance;