tsconfig.json

{
  "compilerOptions": {
    "allowSyntheticDefaultImports": true,
    "declaration": true,
    "experimentalDecorators": true,
    "importHelpers": true,
    "lib": [ 
      "dom",
      "es6"
    ],
    "listFiles": false,
    "module": "commonjs",
    "moduleResolution": "node",
    "outDir": "./build/main",
    "pretty": true,
    "rootDir": "src",
    "target": "es5",
    "traceResolution": false,
    "types": [
      "mocha",
      "node"
    ],
    "typeRoots": [
      "@types",
      "./src/types"
    ],

    "strictNullChecks": true,
    "forceConsistentCasingInFileNames": true,
    "noFallthroughCasesInSwitch": true,
    "noImplicitAny" : true,
    "noImplicitReturns": true,
    "noImplicitThis": true,
    "noUnusedLocals": true,
    "noUnusedParameters": true,
    "esModuleInterop": true,
    "skipLibCheck": true
  },
  "include": [
    "src/**/*.ts"
  ],
  "exclude": [
    "node_modules"
  ]
}