help prs

test/TestBackend.ts

 import { Server } from '../src/Backend'
 
-const testServer = new Server(20000, [{
+new Server(20000, [{
     name: "HelloWorldRPCGroup",
     publicRPCs: () => [],
     localRPCs: () => [{

test/TestFrontend.ts

 import { Client } from '../src/Frontend'
 
-const testClient = new Client(20000, 'localhost')
-testClient.connect().then(_ => {
-    testClient.info().then(console.log)
-    testClient["HelloWorldRPCGroup"].echo("x").then(console.log)
+const client = new Client(20000, 'localhost')
+client.connect().then(_ => {
+    client.info().then(console.log)
+    client["HelloWorldRPCGroup"].echo("x").then(console.log)
 })