backend/tsconfig.json

{
  "compilerOptions": {
    "target": "ESNext",
    "module": "NodeNext",
    "moduleResolution": "NodeNext",
    "allowJs": true,
    "checkJs": false,
    "esModuleInterop": true,
    "forceConsistentCasingInFileNames": true,
    "strict": true,
    "skipLibCheck": true,
    "downlevelIteration": true,
    "outDir": "./dist",
    "baseUrl": ".",
    "paths": {
      "@/*": ["src/*"],
      "@shared/*": ["../shared/*"]
    },
    "jsx": "preserve",
    "lib": ["DOM", "DOM.Iterable", "ESNext", "ES2021"]
  },
  "include": ["src/**/*", "../shared/**/*"],
  "exclude": ["node_modules", "dist", "tests"]
}