如何修复Node.js错误:找不到模块'immer‘

Question

在此错误中，我无法运行npm start。我用于运行后端服务器的脚本。下面显示的是我在package.json中编写的脚本。

"scripts": {
    "start": "react-scripts start",
    "build": "react-scripts build",
    "test": "react-scripts test",
    "eject": "react-scripts eject",
    "server": "nodemon server.js",
    "client": "npm run start --prefix client",
    "dev": "concurrently \"npm run server\" \"npm run client\""
  },

我看到了这个和这个来自另一个stackoverflow帖子，但对我来说不是一样的情况。

我尝试做npm安装和更新npm本身。在我遇到这个错误之前，我正在安装和卸载npm包，所以我重置为原来的提交，因为可能是package.json中的更改导致了这个错误。在这样做的时候，我仍然有相同的错误。有什么办法解决这个问题吗？谢谢！

错误如下：

node:internal/modules/cjs/loader:928
  throw err;
  ^

Error: Cannot find module 'immer'
Require stack:
- /Users/username/Documents/path/to/project/node_modules/react-dev-utils/immer.js
- /Users/username/Documents/path/to/project/node_modules/react-scripts/scripts/utils/verifyTypeScriptSetup.js
- /Users/username/Documents/path/to/project/node_modules/react-scripts/scripts/start.js
    at Function.Module._resolveFilename (node:internal/modules/cjs/loader:925:15)
    at Function.Module._load (node:internal/modules/cjs/loader:769:27)
    at Module.require (node:internal/modules/cjs/loader:997:19)
    at require (node:internal/modules/cjs/helpers:92:18)
    at Object. (/Users/username/Documents/path/to/project/node_modules/react-dev-utils/immer.js:10:13)
    at Module._compile (node:internal/modules/cjs/loader:1108:14)
    at Object.Module._extensions..js (node:internal/modules/cjs/loader:1137:10)
    at Module.load (node:internal/modules/cjs/loader:973:32)
    at Function.Module._load (node:internal/modules/cjs/loader:813:14)
    at Module.require (node:internal/modules/cjs/loader:997:19) {
  code: 'MODULE_NOT_FOUND',
  requireStack: [
    '/Users/username/Documents/path/to/project/node_modules/react-dev-utils/immer.js',
    '/Users/username/Documents/path/to/project/node_modules/react-scripts/scripts/utils/verifyTypeScriptSetup.js',
    '/Users/username/Documents/path/to/project/node_modules/react-scripts/scripts/start.js'
  ]
}

Answer 1

我是来自秘鲁的艾萨克。尝试删除包-lock.json和node.modules，然后运行npm install。如果你有一个没有安装的npm，就像你的问题(immer)中的消息一样，手动安装它。致以问候。

Answer 2

尝试使用以下命令安装软件包：

npm I immer

https://www.npmjs.com/package/immer