tsconfig.json

{
  "compilerOptions": {
    //"allowUnreachableCode": true,
    //"noUnusedLocals": false,
    //"noUnusedParameters": false,


    "removeComments": false,
    "preserveConstEnums": true,
    "emitDecoratorMetadata": true,
    "experimentalDecorators": true,
    "sourceMap": true,
    "declaration": true,
    "noImplicitAny": true,
    "noImplicitReturns": true,
    "noImplicitThis": true,
    "noFallthroughCasesInSwitch": true,
    "suppressImplicitAnyIndexErrors": true,
    "strictNullChecks": true,
    "importHelpers": true,
    "outDir": "build/commonjs",
    "module": "commonjs",
    "target": "es5",
    "moduleResolution": "node",
    "lib": ["es2015", "dom"],
    "typeRoots": [
      "typings",
      "node_modules/@types"
    ]
  },
  "formatCodeOptions": {
    "indentSize": 2,
    "tabSize": 2
  },
  "exclude": [
    "node_modules",
    "dist"
  ],
  "include": [
    "src"
  ]
}