tsconfig.json

{
    "compilerOptions": {            
      "target": "es6",                               
      "module": "commonjs",                                                  
      "outDir": "./dist",                             
      "rootDir": "./src",                                              
      "strict": true,                                            
      "strictPropertyInitialization": false,                     
      "baseUrl": "./src",                                                             
      "esModuleInterop": true,                      
      "experimentalDecorators": true,            
      "emitDecoratorMetadata": true,               
      "skipLibCheck": true,                          
      "forceConsistentCasingInFileNames": true,
      "strictNullChecks": false,
      "noImplicitAny": false,
      "typeRoots": [
        "./src/@types",
        "./node_modules/@types"
      ] 
    }
  }