fix(fastify): Make sure consturctor patching works with esm

open-telemetry · Aug 10, 2023 · d052a1b · d052a1b
1 parent 4f11245
commit d052a1b
Showing 1 changed file with 3 additions and 3 deletions.
diff --git a/plugins/node/opentelemetry-instrumentation-fastify/src/instrumentation.ts b/plugins/node/opentelemetry-instrumentation-fastify/src/instrumentation.ts
@@ -198,13 +198,13 @@ export class FastifyInstrumentation extends InstrumentationBase {
   }
 
   private _patchConstructor(
-    original: () => FastifyInstance
-  ): () => FastifyInstance {
+    moduleExports: { fastify: () => FastifyInstance },
+    ): () => FastifyInstance {
     const instrumentation = this;
     this._diag.debug('Patching fastify constructor function');
 
     function fastify(this: FastifyInstance, ...args: any) {
-      const app: FastifyInstance = original.apply(this, args);
+      const app: FastifyInstance = moduleExports.fastify.apply(this, args);
       app.addHook('onRequest', instrumentation._hookOnRequest());
       app.addHook('preHandler', instrumentation._hookPreHandler());