如何解决Node.js项目启动时的ENOENT文件不存在警告？

我有一个在服务器上正常运行的Node.js Web应用，现在正尝试在开发服务器上搭建本地副本。已安装与生产环境相同的依赖（Node.js、NPM、react-mutation-mapper、mobx-react、react-bootstrap），但启动Node服务器时出现如下警告：

错误日志 #

Compiled with warnings.

Failed to parse source map from '/Users/maruwu/Desktop/project/react-now/node_modules/svg2pdf.js/dist/svg2pdf.min.js.map' file: Error: ENOENT: no such file or directory, open '/Users/maruwu/Desktop/project/react-now/node_modules/svg2pdf.js/dist/svg2pdf.min.js.map'

Search for the keywords to learn more about each warning.
To ignore, add // eslint-disable-next-line to the line before.

WARNING in ./node_modules/svg2pdf.js/dist/svg2pdf.min.js
Module Warning (from ./node_modules/source-map-loader/dist/cjs.js):
Failed to parse source map from '/Users/maruwu/Desktop/project/react-now/node_modules/svg2pdf.js/dist/svg2pdf.min.js.map' file: Error: ENOENT: no such file or directory, open '/Users/maruwu/Desktop/project/react-now/node_modules/svg2pdf.js/dist/svg2pdf.min.js.map'

webpack compiled with 1 warning

package.json内容 #

{  
  "name": "react-now",  
  "version": "0.1.0",  
  "private": true,  
  "dependencies": {    
    "@testing-library/jest-dom": "^5.16.5",    
    "@testing-library/react": "^13.4.0",    
    "@testing-library/user-event": "^13.5.0",    
    "bootstrap": "^5.2.2",    
    "install": "^0.13.0",    
    "mobx-react": "^7.5.3",    
    "npm": "^8.19.2",    
    "react": "^18.2.0",    
    "react-bootstrap": "^2.5.0",    
    "react-dom": "^18.2.0",    
    "react-mutation-mapper": "^0.8.56",    
    "react-scripts": "5.0.1",    
    "web-vitals": "^2.1.4"  
  },  
  "scripts": {    
    "start": "react-scripts start",    
    "build": "react-scripts build",    
    "test": "react-scripts test",    
    "eject": "react-scripts eject"  
  },  
  "eslintConfig": {    
    "extends": [      
      "react-app",      
      "react-app/jest"    
    ]  
  },  
  "browserslist": {    
    "production": [      
      ">0.2%",      
      "not dead",      
      "not op_mini all"    
    ],    
    "development": [      
      "last 1 chrome version",      
      "last 1 firefox version",      
      "last 1 safari version"    
    ]  
  }
}

问题成因 #

• 依赖包安装不完整：svg2pdf.js是react-mutation-mapper的间接依赖，安装过程中可能因网络波动、缓存异常等原因，导致该包的svg2pdf.min.js.map文件未被正确下载到本地node_modules目录。
• source-map-loader的严格校验：React Scripts 5.x版本默认启用了source-map-loader，它会扫描所有依赖包中的source map引用。当svg2pdf.min.js文件里声明了source map路径，但实际文件缺失时，就会触发这个警告。
• 依赖树版本差异：即使你安装了和生产环境相同的顶层依赖，间接依赖的版本可能存在细微差异。部分版本的svg2pdf.js可能在打包时遗漏了source map文件，或者source map的路径声明存在错误。

内容的提问来源于stack exchange，提问作者deamru