意外删除了 node_modules 文件夹答案

【问题标题】：Accidentally deleted node_modules folder意外删除了 node_modules 文件夹
【发布时间】：2017-12-17 09:16:26
【问题描述】：

我不小心删除了我的node_modules 文件夹。我知道找回它的方法就是运行npm install，但这在我的情况下不起作用。这说明我的JSON 文件有问题。我在Terminal 中收到此错误。

这是我的Package.js 文件：

{
  "name": "App",
  "version": "0.0.1",
  "private": true,
  "scripts": {
    "start": "node node_modules/react-native/local-cli/cli.js start",
    "test": "jest"
  },
  "dependencies": {
    "aws-sdk": "git://github.com/aws/aws-sdk-js.git#react-native",
    "react": "^16.0.0-alpha.12",
    "react-native": "^0.45.1",
    "react-native-aws-signature": "0.0.9",
    "react-native-dropdown-menu": "^1.1.0",
    "react-native-dynamodb": "0.0.5",
    "react-redux": "^5.0.5",
    "redux": "^3.7.1"
  },
  "devDependencies": {
    "babel-jest": "20.0.3",
    "babel-preset-react-native": "2.0.0",
    "jest": "20.0.4",
    "react-test-renderer": "16.0.0-alpha.12"
  },
  "jest": {
    "preset": "react-native"
  },
}

错误：

Failed to parse package.json data.
npm ERR! package.json must be actual JSON, not just JavaScript.
npm ERR! 
npm ERR! This is not a bug in npm.
npm ERR! Tell the package author to fix their package.json file. JSON.parse

npm ERR! Please include the following file with any support request:

【问题讨论】：

标签： javascript reactjs react-native terminal

【解决方案1】：

第27行有错误，足够,这里是一个有效的json

{
    "name": "TorusTApp",
    "version": "0.0.1",
    "private": true,
    "scripts": {
        "start": "node node_modules/react-native/local-cli/cli.js start",
        "test": "jest"
    },
    "dependencies": {
        "aws-sdk": "git://github.com/aws/aws-sdk-js.git#react-native",
        "react": "^16.0.0-alpha.12",
        "react-native": "^0.45.1",
        "react-native-aws-signature": "0.0.9",
        "react-native-dropdown-menu": "^1.1.0",
        "react-native-dynamodb": "0.0.5",
        "react-redux": "^5.0.5",
        "redux": "^3.7.1"
    },
    "devDependencies": {
        "babel-jest": "20.0.3",
        "babel-preset-react-native": "2.0.0",
        "jest": "20.0.4",
        "react-test-renderer": "16.0.0-alpha.12"
    },
    "jest": {
        "preset": "react-native"
    }
}

【讨论】：

【解决方案2】：

我相信这是因为您的 package.js 文件的倒数第二行多了一个逗号。

【讨论】：

【解决方案3】：

通过在线 json 验证器运行此 json。例如https://jsonlint.com/

之前的答案是正确的，但这应该对您将来有所帮助。

【讨论】：