React npm run build 每次都失败答案

【问题标题】：React npm run build is getting failed every timeReact npm run build 每次都失败
【发布时间】：2020-11-28 13:07:58
【问题描述】：

当我尝试构建我的 React 应用程序时。 npm run build 命令每次都失败。当我使用 npm start 命令时，一切正常，但我无法使用该命令构建应用程序。这是我的错误：

PS G:\self learning\react js\resort-reactjs> npm run build

> resort@0.1.0 build G:\self learning\react js\resort-reactjs
> react-scripts build

Creating an optimized production build...
Failed to compile.

static/js/main.b4300d14.js from UglifyJs
SyntaxError: Unexpected token: operator (>) [./~/contentful/dist/contentful.node.js:3909,0]


npm ERR! Windows_NT 10.0.18362
npm ERR! argv "C:\\Program Files\\nodejs\\node.exe" "C:\\Users\\USER\\AppData\\Roaming\\npm\\node_modules\\npm\\bin\\npm-cli.js" "run" "build"
npm ERR! node v12.18.1
npm ERR! npm  v3.10.10
npm ERR! code ELIFECYCLE
npm ERR! resort@0.1.0 build: `react-scripts build`
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the resort@0.1.0 build script 'react-scripts build'.
npm ERR! Make sure you have the latest version of node.js and npm installed.
npm ERR! If you do, this is most likely a problem with the resort package,
npm ERR! not with npm itself.
npm ERR! Tell the author that this fails on your system:
npm ERR!     react-scripts build
npm ERR! You can get information on how to open an issue for this project with:
npm ERR!     npm bugs resort
npm ERR! Or if that isn't available, you can get their info via:
npm ERR!     npm owner ls resort
npm ERR! There is likely additional logging output above.

npm ERR! Please include the following file with any support request:
npm ERR!     G:\self learning\react js\resort-reactjs\npm-debug.log

在我的 package.json 文件中，所有内容都已更新。我的 package.json 文件在这里。：

{
  "name": "resort",
  "version": "0.1.0",
  "private": true,
  "dependencies": {
    "react": "^16.13.1",
    "react-dom": "^16.13.1",
    "react-icons": "^3.10.0",
    "react-router-dom": "^5.2.0",
    "react-scripts": "0.9.5",
    "styled-components": "^5.1.1"
  },
  "devDependencies": {},
  "scripts": {
    "start": "react-scripts start",
    "build": "react-scripts build",
    "test": "react-scripts test --env=jsdom",
    "eject": "react-scripts eject"
  }
}

【问题讨论】：

这可能会回答您的问题stackoverflow.com/a/46954832/10028748
你在代码库的其他地方有意外的运算符'>'，在开发模式下运行并检查
如何找到意外的运算符？运行代码时在哪里没有显示错误或警告！ @bews99
SyntaxError: Unexpected token: operator (>) [./~/contentful/dist/contentful.node.js:3909,0] is the error my contentful.node.js 3909 number line: module .exports = (flag, argv) => { @bews99

标签： javascript reactjs npm npm-install npm-scripts

【解决方案1】：

package.json 文件对我来说看起来不错。我认为这是一个错误，或者至少是一个记录不充分的错误。尝试调试或只清理项目周围不需要的不需要的文件，然后重新启动构建。

【讨论】：