refactor(backend): modernize data access and runtime setup

README.md

@@ -3,10 +3,12 @@
 CoinRadar is a crypto portfolio tracking web application with wallet management, transaction history, and swap support.
 
 ## Stack
+
 - Frontend: React, TypeScript, Redux Toolkit, RTK Query, Tailwind CSS, Chart.js
 - Backend: Node.js, Express, TypeScript, PostgreSQL, Prisma ORM, Zod, JWT
 
 ## Key Features
+
 - Session-based authentication with HttpOnly cookies, access/refresh tokens, and refresh token rotation
 - Google OAuth sign-in with callback flow and account linking safeguards
 - Wallet management with per-user wallet isolation and access control

apps/backend/jest.config.cjs

@@ -1,12 +1,31 @@
 /** @type {import('jest').Config} */
 module.exports = {
-  preset: 'ts-jest',
   testEnvironment: 'node',
   roots: ['<rootDir>/tests'],
   testMatch: ['**/*.test.ts'],
-  setupFilesAfterEnv: ['<rootDir>/tests/setup/jest.setup.ts'],
+  setupFilesAfterEnv: ['<rootDir>/tests/setup/jest.setup.cjs'],
   globalSetup: '<rootDir>/tests/setup/globalSetup.cjs',
   globalTeardown: '<rootDir>/tests/setup/globalTeardown.cjs',
+  extensionsToTreatAsEsm: ['.ts'],
+  moduleNameMapper: {
+    '^(\\.{1,2}/.*)\\.js$': '$1',
+  },
+  transform: {
+    '^.+\\.tsx?$': [
+      '@swc/jest',
+      {
+        jsc: {
+          parser: {
+            syntax: 'typescript',
+          },
+          target: 'es2022',
+        },
+        module: {
+          type: 'commonjs',
+        },
+      },
+    ],
+  },
   maxWorkers: 1,
   verbose: true,
 };

apps/backend/package.json

@@ -1,11 +1,12 @@
 {
   "name": "backend",
   "version": "1.0.0",
-  "main": "src/server.ts",
+  "type": "module",
+  "main": "dist/src/server.js",
   "scripts": {
-    "dev": "nodemon --exec \"ts-node --esm src/server.ts\"",
+    "dev": "tsx watch src/server.ts",
     "prisma": "prisma",
-    "seed": "ts-node ./src/prisma.ts",
+    "seed": "tsx ./src/prisma.ts",
     "build": "prisma generate && tsc",
     "test": "jest --config ./jest.config.cjs --runInBand",
     "test:integration": "jest --config ./jest.config.cjs --runInBand"
@@ -14,10 +15,15 @@
   "license": "ISC",
   "description": "",
   "devDependencies": {
+    "@swc/core": "^1.13.5",
+    "@swc/jest": "^0.2.39",
+    "@types/jest": "^29.5.14",
     "@types/supertest": "^7.2.0",
+    "jest": "^29.7.0",
     "nodemon": "^3.1.10",
     "ts-node": "^10.9.2",
-    "tsconfig-paths": "^4.2.0"
+    "tsconfig-paths": "^4.2.0",
+    "tsx": "^4.20.6"
   },
   "dependencies": {
     "@prisma/client": "6.19.0",

apps/backend/prisma/migrations/20260422123000_rename_transactions_to_transaction/migration.sql

@@ -0,0 +1 @@
+ALTER TABLE "Transactions" RENAME TO "Transaction";

apps/backend/prisma/schema.prisma

@@ -11,19 +11,18 @@ generator client {
 datasource db {
   provider = "postgresql"
   url      = env("DATABASE_URL")
-  //! 7.0.0 - не стабільна версія тому залишив (6.19.0) без prisma.config.ts (a high-severity vulnerability in the 'hono' package)
 }
 
 enum BuyOrSell {
   buy
   sell
 }
 
-model Transactions {
+model Transaction {
   id       String @id @default(uuid())
   walletId String
 
-  coinSymbol String
+  coinSymbol  String
   swapGroupId String?
 
   buyOrSell BuyOrSell
@@ -43,7 +42,7 @@ model Wallet {
   userId    String
   user      User     @relation(fields: [userId], references: [id])
 
-  transactions Transactions[]
+  transactions Transaction[]
   swapSettings SwapSettings?
 
   @@unique([name, userId]) //Композитний унікальний індекс - в межах одного користувача (userId)
@@ -61,16 +60,16 @@ model User {
 }
 
 model RefreshToken {
-  id                 String    @id @default(uuid())
-  userId             String
-  tokenHash          String    @unique
-  expiresAt          DateTime
-  createdAt          DateTime  @default(now())
-  revokedAt          DateTime?
+  id                  String    @id @default(uuid())
+  userId              String
+  tokenHash           String    @unique
+  expiresAt           DateTime
+  createdAt           DateTime  @default(now())
+  revokedAt           DateTime?
   replacedByTokenHash String?
-  userAgent          String?
-  ip                 String?
-  user               User      @relation(fields: [userId], references: [id], onDelete: Cascade)
+  userAgent           String?
+  ip                  String?
+  user                User      @relation(fields: [userId], references: [id], onDelete: Cascade)
 
   @@index([userId])
 }

apps/backend/src/app.ts

@@ -1,35 +1,46 @@
-require('dotenv').config();
-const express = require('express');
-import type { Express, Request, Response } from 'express';
-const cors = require('cors');
-const prisma = require('./prisma');
+import "dotenv/config";
+import express, { type Express, type Request, type Response } from "express";
+import cors from "cors";
+import prisma from "./prisma.js";
 
-const authRouter = require('./router/authRouter');
-const walletRouter = require('./router/walletRouter');
+import authRouter from "./router/authRouter.js";
+import walletRouter from "./router/walletRouter.js";
 
 const app: Express = express();
 
-const allowedOrigins = (process.env.CORS_ALLOWED_ORIGINS || process.env.FRONTEND_URL || 'http://localhost:5173')
-    .split(',')
-    .map((origin: string) => origin.trim())
-    .filter(Boolean);
+const allowedOrigins = (
+  process.env.CORS_ALLOWED_ORIGINS ||
+  process.env.FRONTEND_URL ||
+  "http://localhost:5173"
+)
+  .split(",")
+  .map((origin: string) => origin.trim())
+  .filter(Boolean);
 
 app.use(express.json());
-app.use(cors({
+app.use(
+  cors({
     origin: allowedOrigins,
     credentials: true,
-}));
+  }),
+);
 
-app.use('/api/auth', authRouter);
-app.use('/api/wallets', walletRouter);
+app.use("/api/auth", authRouter);
+app.use("/api/wallets", walletRouter);
 
-app.get('/api/status', async (_req: Request, res: Response) => {
-    try {
-        await prisma.$queryRaw`SELECT 1`;
-        res.json({ message: 'API Server is running and DB is connected!', status: 'OK' });
-    } catch (_error) {
-        res.status(500).json({ message: 'API Server is running, but DB connection failed.', status: 'ERROR' });
-    }
+app.get("/api/status", async (_req: Request, res: Response) => {
+  try {
+    await prisma.$queryRaw`SELECT 1`;
+    res.json({
+      message: "API Server is running and DB is connected!",
+      status: "OK",
+    });
+  } catch (_error) {
+    res.status(500).json({
+      message: "API Server is running, but DB connection failed.",
+      status: "ERROR",
+    });
+  }
 });
 
-module.exports = { app };
+export { app };