chore(examples-express): call setupTracing before module imports (#2992)

Author: aryamohanan

examples/express/src/client.ts

@@ -16,11 +16,12 @@
 
 import { setupTracing } from './tracer';
 
+// Initialize tracing before importing other moduless
+const tracer = setupTracing('example-express-client');
+
 import * as api from '@opentelemetry/api';
 import * as axios from 'axios';
 
-const tracer = setupTracing('example-express-client');
-
 async function makeRequest() {
   const span = tracer.startSpan('client.makeRequest()', {
     kind: api.SpanKind.CLIENT,

examples/express/src/server.ts

@@ -16,13 +16,14 @@
 
 import { setupTracing } from './tracer';
 
+// Initialize tracing before importing other modules
+setupTracing('example-express-server');
+
 // Require in rest of modules
 import * as express from 'express';
 import * as axios from 'axios';
 import { RequestHandler } from 'express';
 
-setupTracing('example-express-server');
-
 // Setup express
 const app = express();
 const PORT = 8080;