tsconfig.json

{
  "compilerOptions": {
    "strict": true,
    "target": "ES2020",
    "module": "CommonJS",
    "moduleResolution": "node",
    "esModuleInterop": true,
    "forceConsistentCasingInFileNames": true,
    "skipLibCheck": true,
    "skipDefaultLibCheck": true,
    "outDir": "build",
    "incremental": true
  },
  "include": ["src"],
  "exclude": ["node_modules"],
  "files": ["src/types/custom.d.ts"]
}