some progress

node_modules/mongoose/tools/repl.js

@@ -0,0 +1,35 @@
+'use strict';
+
+run().catch(error => {
+  console.error(error);
+  process.exit(-1);
+});
+
+async function run() {
+  const ReplSet = require('mongodb-memory-server').MongoMemoryReplSet;
+
+  // Create new instance
+  const replSet = new ReplSet({
+    binary: {
+      version: process.argv[2]
+    },
+    instanceOpts: [
+      // Set the expiry job in MongoDB to run every second
+      {
+        port: 27017,
+        args: ['--setParameter', 'ttlMonitorSleepSecs=1']
+      }
+    ],
+    dbName: 'mongoose_test',
+    replSet: {
+      name: 'rs0',
+      count: 2,
+      storageEngine: 'wiredTiger'
+    }
+  });
+
+  await replSet.start();
+  await replSet.waitUntilRunning();
+  console.log('MongoDB-ReplicaSet is now running.');
+  console.log(replSet.getUri('mongoose_test'));
+}