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

{
  "solution": {
    "name": "react-todo-basic-client-side-solution",
    "id": "40efb476-b506-409a-8848-5fbfb9456af6",
    "version": "1.0.0.0"
  },
  "paths": {
    "zippedPackage": "solution/react-todo-basic.sppkg"
  }
}