tsconfig.json

{
    "compilerOptions": {
      "target": "es5",
      "module": "commonjs",
      "outDir": "out/public",
      "lib": ["dom", "es2015", "es2015.promise" ],
      "importHelpers": true,
      "typeRoots": [
        "node_modules/@types",
        "./@types",
        "src/modules"
      ],
      "moduleResolution": "node",
      "baseUrl": "./",
      "paths": {
        "*": [ "@types/*" ]
      },

      "esModuleInterop": true,
      "removeComments": false,
      "preserveConstEnums": true,
      "emitDecoratorMetadata": true,
      "experimentalDecorators": true,
      "sourceMap": true,
      "noImplicitAny": true,
      "noImplicitReturns": true,
      "noImplicitThis": true,
      "noFallthroughCasesInSwitch": true,
      "suppressImplicitAnyIndexErrors": true,
      "strictNullChecks": true,
      "downlevelIteration": true
    },
    "include": [
      "src",
      "@types",
      "server",
    ],
    "exclude": [
      "node_modules",
      "public"
    ]
  }