fix(Dependencies): Upgrades mongodb driver to ^4.7.0 (LLC-1690) (#314)

BREAKING CHANGE: when using this repo be mindful we now use official MongoDB TS Types which are packed with the mongodb driver v4.0.0, so if you're using a version of the mongodb driver that's lower than v4 you will likely be using the mongodb community types @types/mongodb which could clash with the shape of objects now defined in this project (i.e the official MongoDB types). To resolve, you'd likely need to upgrade to use mongodb driver ^4.0.0.

.gitignore

@@ -5,3 +5,4 @@ notes.md
 .vscode
 dist
 coverage
+.idea

package.json

@@ -43,7 +43,7 @@
     "knex": "^0.19.0",
     "lodash": "^4.17.10",
     "moment": "^2.22.1",
-    "mongodb": "^3.0.8",
+    "mongodb": "^4.7.0",
     "morgan": "^1.9.0",
     "newrelic": "^7.4.0",
     "rulr": "^4.0.2",
@@ -63,7 +63,6 @@
     "@types/knex": "0.15.2",
     "@types/lodash": "4.14.141",
     "@types/mocha": "2.2.48",
-    "@types/mongodb": "3.0.18",
     "@types/morgan": "1.7.37",
     "@types/node": "^17.0.35",
     "@types/uuid": "3.4.5",

src/knexRepo/utils/match.ts

@@ -1,4 +1,4 @@
-/* tslint:disable no-invalid-this no-use-before-declare no-this max-file-line-count */
+/* tslint:disable no-invalid-this no-this max-file-line-count */
 import { QueryBuilder } from 'knex';
 import { isObject } from 'lodash';
 import InvalidOp from '../../errors/InvalidOp';

src/memoryRepo/utils/match.ts

@@ -1,4 +1,3 @@
-/* tslint:disable no-use-before-declare */
 import { includes, isNull, isObject, isUndefined } from 'lodash';
 import InvalidOp from '../../errors/InvalidOp';
 

src/mongoRepo/utils/connectToDb/createConnection.ts

@@ -1,20 +1,19 @@
 import { MongoClient } from 'mongodb';
 import Config from './Config';
 import Connection from './Connection';
-import handleJoiningReplica from './handleJoiningReplica';
-import handleLeavingReplica from './handleLeavingReplica';
 import retryConnection from './retryConnection';
 
 export default async (config: Config, retries = 0): Promise<Connection> => {
   try {
     const client = await MongoClient.connect(config.url);
     const db = client.db(config.dbName);
+
     config.logger.info(`Created new Mongo connection`);
-    (db as any).s.topology.once('left', handleLeavingReplica(config));
-    (db as any).s.topology.once('joined', handleJoiningReplica(config));
+
     return { client, db };
-  } catch (err: any) {
-    config.logger.error(`Failed Mongo connection: ${err.message}`);
+  } catch (error: any) {
+    config.logger.error(`Failed Mongo connection: ${error.message}`);
+
     return retryConnection(config, retries + 1);
   }
 };