tsconfig.json

{
    "compilerOptions": {
      "target": "es6",
      "module": "commonjs",
      "rootDir": "./src",
      "outDir": "./build",
      "esModuleInterop": true,
      "moduleResolution": "node",
      "noImplicitReturns": false,
      "strict": true,
      "emitDecoratorMetadata": true,
      "strictPropertyInitialization": false,
      "experimentalDecorators": true,
      "typeRoots": [
        "./src/@types",
        "./@types",
        "./node_modules/@types"
      ]
      
    }
}