style(MongoMemoryReplSet): trim error message & add "_" to unused parameter

Author: hasezoey

packages/mongodb-memory-server-core/src/MongoMemoryReplSet.ts

@@ -597,7 +597,7 @@ export class MongoMemoryReplSet extends EventEmitter {
             const instanceInfo = server.instanceInfo;
 
             if (!instanceInfo) {
-              return rej(new Error('_waitForPrimary - instanceInfo not present '));
+              return rej(new Error('_waitForPrimary - instanceInfo not present'));
             }
 
             instanceInfo.instance.once(MongoInstanceEvents.instancePrimary, res);
@@ -608,7 +608,7 @@ export class MongoMemoryReplSet extends EventEmitter {
             }
           })
       ),
-      new Promise((res, rej) => {
+      new Promise((_res, rej) => {
         timeoutId = setTimeout(() => {
           rej(new Error(`Timed out after ${timeout}ms while waiting for an Primary`));
         }, timeout);