无法修复来自 UglifyJs 的“意外的标记名称 «i»,预期的双关语 «;»”

par*_*too 6 next npm uglifyjs reactjs webpack

我创建了一个带有自定义下一个服务器的 React 应用程序

服务器.js

const { createServer } = require('http');
const next = require('next');
const app = next({
  dev: process.env.NODE_ENV !== 'production',
  conf: {
  webpack: config => {
    config.devtool = false;
    for (const r of config.module.rules) {
      if (r.loader === 'babel-loader') {
        r.options.sourceMaps = false;
      }
    }
    return config;
  }
}
});
const routes = require('./routes');
const handler = routes.getRequestHandler(app);
app.prepare().then(() => {
   createServer(handler).listen(3000, err => {
    if (err) throw err;
   });
});
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但是,我遇到npm run build问题,因为我收到以下错误

Unexpected token name «i», expected punc «;» [commons.js:124406,11]
at /home/parstoo/Dropbox/Projects/Ethereum/SupplyChain/node_modules/next/dist/server/build/index.js:182:21
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根据论坛,问题是由于 UglifyJs 不支持 ES6 引起的,所以我尝试通过以下链接解决它:thisthis。我几乎尝试了所有的建议,但没有一个奏效。

另外,我的根目录中没有 webpack.config.js。所以,我在根目录中创建了一个(我不知道它是否正确),内容如下: webpack.config.js:

const path = require('path');
const UglifyJsPlugin = require('uglifyjs-webpack-plugin');

module.exports = {
  optimization: {
  minimizer: [new UglifyJsPlugin()],
  },
};
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package.json内容:

 {
   "name": "supplychain",
   "version": "1.0.0",
   "description": "",
   "main": "index.js",
   "scripts": {
     "test": "mocha",
     "dev": "node server.js",
     "start": "NODE_ENV=production server.js",
     "transpile": "babel src -d dist --copy-files",
     "prepublishOnly": "npm run transpile",
     "build": "next build",
     "deploy": "gh-pages -d examples/dist",
   },
   "author": "",
   "license": "ISC",
   "dependencies": {
     "@babel/polyfill": "^7.2.5",
     "fs-extra": "^7.0.1",
     "ganache-cli": "^6.4.1",
     "mocha": "^5.2.0",
     "next": "^4.1.1",
     "next-routes": "^1.4.2",
     "radium": "^0.25.1",
     "react": "^16.8.4",
     "react-dom": "^16.8.4",
     "semantic-ui-react": "^0.82.5",
     "solc": "^0.4.25",
     "truffle-hdwallet-provider": "0.0.3",
     "web3": "^1.0.0-beta.35"
  },
    "devDependencies": {
      "@babel/cli": "^7.2.3",
      "@babel/core": "^7.2.2",
      "@babel/preset-env": "^7.3.1",
      "babel": "^6.23.0",
      "babel-cli": "^6.26.0",
      "babel-preset-es2015": "^6.24.1",
      "css-loader": "^2.1.0",
      "html-webpack-plugin": "^3.2.0",
      "npm-install-webpack-plugin": "^4.0.5",
      "terser-webpack-plugin": "^1.3.0",
      "uglifyjs-webpack-plugin": "v1.0.0-beta.1",
      "webpack": "^4.35.0",
      "webpack-cli": "^3.3.4",
      "webpack-dev-server": "^3.7.2"
  }
}
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有人可以帮我解决问题吗?

小智 18

根据论坛,问题是由于 UglifyJs 不支持 ES6 引起的,所以我尝试通过以下链接解决它:this 和 this。我几乎尝试了所有的建议,但没有一个奏效。

不要使用 UglifyJs,而是尝试使用 terser !https://github.com/terser/terser

Uglify-js 只能转译 es5 语法。如果您想转译 es6+ 语法,请改用 terser。