chore: Improve tracing

server/tracing.ts

@@ -1,12 +1,13 @@
+import tracer from "dd-trace";
+
 // If the DataDog agent is installed and the DD_API_KEY environment variable is
 // in the environment then we can safely attempt to start the DD tracer
 if (process.env.DD_API_KEY) {
-  // eslint-disable-next-line @typescript-eslint/no-var-requires
-  require("dd-trace").init({
+  tracer.init({
     // SOURCE_COMMIT is used by Docker Hub
     // SOURCE_VERSION is used by Heroku
     version: process.env.SOURCE_COMMIT || process.env.SOURCE_VERSION,
   });
 }
 
-export {};
+export default tracer;