Started migrating the DB to MongoDB

src/lib/mongodb.ts

@@ -0,0 +1,30 @@
+import {MongoClient} from "mongodb";
+
+if (!process.env.MONGODB_URI) {
+	throw new Error('Invalid/Missing environment variable: "MONGODB_URI"');
+}
+
+const uri = process.env.MONGODB_URI;
+const options = {};
+
+let client: MongoClient;
+
+if (process.env.NODE_ENV === "development") {
+	// In development mode, use a global variable so that the value
+	// is preserved across module reloads caused by HMR (Hot Module Replacement).
+	let globalWithMongo = global as typeof globalThis & {
+		_mongoClient?: MongoClient;
+	};
+
+	if (!globalWithMongo._mongoClient) {
+		globalWithMongo._mongoClient = new MongoClient(uri, options);
+	}
+	client = globalWithMongo._mongoClient;
+} else {
+	// In production mode, it's best to not use a global variable.
+	client = new MongoClient(uri, options);
+}
+
+// Export a module-scoped MongoClient. By doing this in a
+// separate module, the client can be shared across functions.
+export default client;