tsconfig.json

{
  "compilerOptions": {
    "target": "es5",
    "module": "commonjs",
    "moduleResolution": "node",
    "strict": true,
    "noImplicitReturns": true,
    "noUnusedLocals": true,
    "forceConsistentCasingInFileNames": true,
    "outDir": "./out",
    "declaration": true,
    "experimentalDecorators": true,
    "esModuleInterop": true,
    "allowSyntheticDefaultImports": true,
    "sourceMap": true,
    "tsBuildInfoFile": "./.cache/tsbuildinfo",
    "incremental": true,
    "rootDir": "./src",
    "typeRoots": ["./node_modules/@types", "./typings"]
  },
  "include": ["./src/**/*.ts"]
}