node-stream-helpers/tsconfig.json

{
  "compilerOptions": {
    "target": "es5",
    "module": "commonjs",
    "outDir": "./lib",
    "declaration": true,
    "moduleResolution": "node",
    "strict": true,
    "esModuleInterop": true,
    "lib": ["es6"]
  },
  "include": ["./src/**/*"]
}