добвлены файлы

backend/src/index.ts

+import express, {Express, json, urlencoded} from 'express';
+import 'dotenv/config';
+import cors from 'cors';
+import {mongoose} from './repository/mongoose';
+
+mongoose.run();
+
+const app: Express = express();
+app.use(json());
+app.use(cors());
+app.use(urlencoded({extended: true}));
+
+app.use(express.static('public/uploads'));
+
+app.listen(process.env.PORT, () => {
+	console.log(`App started on port ${process.env.PORT}`);
+});

backend/src/repository/mongoose.ts

+import {connect, connection} from 'mongoose';
+
+export const mongoose = {
+	run: async () => {
+		try {
+			return await connect(`${process.env.MONGO_URL}/hw92`);
+		} catch (error) {
+			console.log(error);
+		}
+	},
+
+	stop: async () => {
+		try {
+			return await connection.destroy();
+		} catch (error) {
+			console.log(error);
+		}
+	},
+};

backend/src/types/environment.d.ts

+declare global {
+	namespace NodeJS {
+		interface ProcessEnv {
+			PORT: string;
+			MONGO_URL: string;
+		}
+	}
+}
+
+export {};