sp-dev-fx-webparts/samples/react-todo/config/package-solution.json

{
  "solution": {
    "name": "todo-webpart-sample-client-side-solution",
    "id": "99a1fe26-363c-4980-b7c7-f14322a071ed",
    "version": "1.0.0.0"
  },
  "paths": {
    "zippedPackage": "todo-webpart-sample.spapp"
  }
}