tsconfig.json

{
 "compilerOptions": {
   "lib": [
     "es5",
     "es6"
   ],
   "baseUrl": "./",
   "emitDecoratorMetadata": true,
   "esModuleInterop": true,
   "experimentalDecorators": true,
   "strictPropertyInitialization": false,
   "importHelpers": true,
   "module": "commonjs",
   "outDir": "dist",
   "removeComments": true,
   "sourceMap": true,
   "strict": true,
   "target": "es6",
   "moduleResolution": "node",
   "types": [
     "node"
   ],
   "typeRoots": [
     "node_modules/@types"
   ]
 },
 "include": [
   "src/**/*.ts",
   "spec/**/*.ts"
 ],
 "exclude": [
   "src/public/"
 ]
}