tsconfig.json

{
    "version": "3.2.2",
    "compilerOptions": {
      "module": "commonjs",
      "lib": ["es2015", "es2016","esnext.asynciterable"],
      "target": "es6",
      "types": ["node"],
      "skipLibCheck": true,
      "strictNullChecks": true,
      "alwaysStrict": true,
      "noImplicitThis": true,
      "forceConsistentCasingInFileNames": true,
      "noImplicitReturns": true,
      "noUnusedLocals": true,
      "experimentalDecorators": true,
      "sourceMap": true,
      "esModuleInterop": true,
      "rootDir": "src",
      "outDir": "dist"
    },
    "exclude": [
      "**/node_modules",
      //"**/*.d.ts"
    ]
  }