获取undefined不是一个对象

Question

我正在寻找React-Native的示例项目。首先，我得到了无法解决路由器通量的erro。然后我添加了磁通依赖，我运行npm start。在那之后我得到了＃34; Undefined不是一个对象＆＃34;在package.json中。我该如何解决呢。你能帮我么？

{
 "name": "FirsTrial",
 "version": "0.0.1",
 "private": true,
 "scripts": {
 "start": "node node_modules/react-native/local-cli/cli.js start",
 "test": "jest"
},
 "dependencies": {
 "react": "16.3.1",
 "react-native": "0.55.3",
 "react-native-router-flux": "3.38.0"
},
"devDependencies": {
"babel-jest": "22.4.3",
"babel-preset-react-native": "^2.1.0",
"jest": "22.4.3",
"react-test-renderer": "16.3.1"
  },
 "jest": {
 "preset": "react-native"
  }
}

＆＃34; FirsTrial＆＃34;有下划线!!!