tsconfig.json

{
  "compilerOptions": {
    "target": "es6",                          
    "module": "commonjs",                    
    "outDir": "./lib",                      
    "rootDir": "./src",                    
    "strict": true,                       
    "noImplicitAny": true,               
    "esModuleInterop": true             
  },
  "exclude": ["node_modules", "**/*.test.ts"]
}