fix: require grpc-js instead of grpc in grpc-js example (#1364)

Co-authored-by: Bartlomiej Obecny <[email protected]>

Author: reggiemcdonald

examples/grpc-js/helloworld_grpc_pb.js

@@ -18,7 +18,7 @@
 
 'use strict';
 
-const grpc = require('grpc');
+const grpc = require('@grpc/grpc-js');
 const helloworld_pb = require('./helloworld_pb.js');
 
 function serialize_HelloReply(arg) {

examples/grpc-js/server.js

@@ -2,7 +2,7 @@
 
 const tracer = require('./tracer')(('example-grpc-server'));
 // eslint-disable-next-line import/order
-const grpc = require('grpc');
+const grpc = require('@grpc/grpc-js');
 
 const messages = require('./helloworld_pb');
 const services = require('./helloworld_grpc_pb');
@@ -14,9 +14,10 @@ function startServer() {
   // Creates a server
   const server = new grpc.Server();
   server.addService(services.GreeterService, { sayHello });
-  server.bind(`0.0.0.0:${PORT}`, grpc.ServerCredentials.createInsecure());
-  console.log(`binding server on 0.0.0.0:${PORT}`);
-  server.start();
+  server.bindAsync(`0.0.0.0:${PORT}`, grpc.ServerCredentials.createInsecure(), () => {
+    console.log(`binding server on 0.0.0.0:${PORT}`);
+    server.start();
+  });
 }
 
 function sayHello(call, callback) {