Question

我正在构建一个React项目，在最后的“ npm start”阶段，我遇到了很多错误：请帮我解决这个问题。

C：\ Users \ Intel \ Desktop \ Disha \ burger-project> npm start

burger-project@0.1.0开始C：\ Users \ Intel \ Desktop \ Disha \ burger-project
节点脚本/start.js

插件无法在“ html-webpack-plugin-before-html-processing”处注册。找不到挂钩。突破性变化：需要在“ this.hooks”处存在一个钩子。要为此钩子创建兼容层，请钩入“ this._pluginCompat”。
npm ERR！代码ELIFECYCLE
npm ERR！ errno 1
npm ERR！ burger-project@0.1.0开始：node scripts/start.js
npm ERR！退出状态1
npm ERR！
npm ERR！在burger-project@0.1.0启动脚本处失败。
npm ERR！ npm可能不是问题。上面可能还有其他日志记录输出。

npm ERR！可以在以下位置找到此运行的完整日志：
npm ERR！ C：\ Users \ Intel \ AppData \ Roaming \ npm-cache_logs \ 2020-09-22T17_01_17_645Z-debug.log

这也是我的项目package.json文件

 {
      "name": "burger-project",
      "version": "0.1.0",
      "private": true,
      "dependencies": {
        "autoprefixer": "7.1.6",
        "axios": "^0.19.2",
        "babel-core": "6.26.0",
        "babel-eslint": "7.2.3",
        "babel-jest": "^26.3.0",
        "babel-loader": "7.1.2",
        "babel-preset-react-app": "^3.1.2",
        "babel-runtime": "6.26.0",
        "case-sensitive-paths-webpack-plugin": "2.1.1",
        "chalk": "1.1.3",
        "dotenv": "4.0.0",
        "dotenv-expand": "4.2.0",
        "eslint": "4.10.0",
        "eslint-config-react-app": "^2.1.0",
        "eslint-loader": "1.9.0",
        "eslint-plugin-flowtype": "2.39.1",
        "eslint-plugin-import": "2.8.0",
        "eslint-plugin-jsx-a11y": "5.1.1",
        "eslint-plugin-react": "7.4.0",
        "extract-text-webpack-plugin": "3.0.2",
        "file-loader": "1.1.5",
        "fs-extra": "3.0.1",
        "html-webpack-plugin": "2.29.0",
        "jest": "^26.4.2",
        "npm-upgrade": "^2.0.4",
        "object-assign": "4.1.1",
        "postcss-flexbugs-fixes": "3.2.0",
        "postcss-loader": "2.0.8",
        "promise": "8.0.1",
        "prop-types": "^15.7.2",
        "raf": "3.4.0",
        "react": "^16.8.0",
        "react-dev-utils": "^5.0.2",
        "react-dom": "^16.8.0",
        "react-redux": "^7.2.1",
        "react-router-dom": "^5.2.0",
        "redux": "^4.0.5",
        "redux-devtools-extension": "^2.13.8",
        "redux-thunk": "^2.3.0",
        "resolve": "1.6.0",
        "style-loader": "0.19.0",
        "sw-precache-webpack-plugin": "0.11.4",
        "url-loader": "0.6.2",
        "webpack-dev-server": "^3.11.0",
        "webpack-manifest-plugin": "1.3.2",
        "whatwg-fetch": "2.0.3"
      },
      "scripts": {
        "start": "node scripts/start.js",
        "build": "node scripts/build.js",
        "test": "node scripts/test.js --env=jsdom"
      },
      "jest": {
        "collectCoverageFrom": [
          "src/**/*.{js,jsx,mjs}"
        ],
        "setupFiles": [
          "<rootDir>/config/polyfills.js"
        ],
        "testMatch": [
          "<rootDir>/src/**/__tests__/**/*.{js,jsx,mjs}",
          "<rootDir>/src/**/?(*.)(spec|test).{js,jsx,mjs}"
        ],
        "testEnvironment": "node",
        "testURL": "http://localhost",
        "transform": {
          "^.+\\.(js|jsx|mjs)$": "<rootDir>/node_modules/babel-jest",
          "^.+\\.css$": "<rootDir>/config/jest/cssTransform.js",
          "^(?!.*\\.(js|jsx|mjs|css|json)$)": "<rootDir>/config/jest/fileTransform.js"
        },
        "transformIgnorePatterns": [
          "[/\\\\]node_modules[/\\\\].+\\.(js|jsx|mjs)$"
        ],
        "moduleNameMapper": {
          "^react-native$": "react-native-web"
        },
        "moduleFileExtensions": [
          "web.js",
          "js",
          "json",
          "web.jsx",
          "jsx",
          "node",
          "mjs"
        ]
      },
      "babel": {
        "presets": [
          "react-app"
        ]
      },
      "eslintConfig": {
        "extends": "react-app"
      },
      "devDependencies": {
        "babel-plugin-add-module-exports": "^1.0.2",
        "css-loader": "^4.2.1",
        "html-webpack-beforehtml-plugin": "^1.0.0",
        "preload-webpack-plugin": "^3.0.0-beta.3",
        "webpack": "^4.44.2",
        "webpack-cli": "^3.3.12"
      }
    }

这是start.js的代码

//'use strict';

// Do this as the first thing so that any code reading it knows the right env.
process.env.BABEL_ENV = 'development';
process.env.NODE_ENV = 'development';

// Makes the script crash on unhandled rejections instead of silently
// ignoring them. In the future, promise rejections that are not handled will
// terminate the Node.js process with a non-zero exit code.
process.on('unhandledRejection', err => {
  throw err;
});

// Ensure environment variables are read.
require('../config/env');

const fs = require('fs');
const chalk = require('chalk');
const webpack = require('webpack');
const WebpackDevServer = require('webpack-dev-server');
const clearConsole = require('react-dev-utils/clearConsole');
const checkRequiredFiles = require('react-dev-utils/checkRequiredFiles');
const {
  choosePort,
  createCompiler,
  prepareProxy,
  prepareUrls,
} = require('react-dev-utils/WebpackDevServerUtils');
const openBrowser = require('react-dev-utils/openBrowser');
const paths = require('../config/paths');
const config = require('../config/webpack.config.dev');
const createDevServerConfig = require('../config/webpackDevServer.config');

const useYarn = fs.existsSync(paths.yarnLockFile);
const isInteractive = process.stdout.isTTY;

// Warn and crash if required files are missing
if (!checkRequiredFiles([paths.appHtml, paths.appIndexJs])) {
  process.exit(1);
}

// Tools like Cloud9 rely on this.
const DEFAULT_PORT = parseInt(process.env.PORT, 10) || 3000;
const HOST = process.env.HOST || '0.0.0.0';

// We attempt to use the default port but if it is busy, we offer the user to
// run on a different port. `detect()` Promise resolves to the next free port.
choosePort(HOST, DEFAULT_PORT)
  .then(port => {
    if (port == null) {
      // We have not found a port.
      return;
    }
    const protocol = process.env.HTTPS === 'true' ? 'https' : 'http';
    const appName = require(paths.appPackageJson).name;
    const urls = prepareUrls(protocol, HOST, port);
    // Create a webpack compiler that is configured with custom messages.
    const compiler = createCompiler(webpack, config, appName, urls, useYarn);
    // Load proxy config
    const proxySetting = require(paths.appPackageJson).proxy;
    const proxyConfig = prepareProxy(proxySetting, paths.appPublic);
    // Serve webpack assets generated by the compiler over a web sever.
    const serverConfig = createDevServerConfig(
      proxyConfig,
      urls.lanUrlForConfig
    );
    const devServer = new WebpackDevServer(compiler, serverConfig);
    // Launch WebpackDevServer.
    devServer.listen(port, HOST, err => {
      if (err) {
        return console.log(err);
      }
      if (isInteractive) {
        clearConsole();
      }
      console.log(chalk.cyan('Starting the development server...\n'));
      openBrowser(urls.localUrlForBrowser);
    });

    ['SIGINT', 'SIGTERM'].forEach(function(sig) {
      process.on(sig, function() {
        devServer.close();
        process.exit();
      });
    });
  })
  .catch(err => {
    if (err && err.message) {
      console.log(err.message);
    }
    process.exit(1);
  });

Answer 1

在您的情况下，最好的方法可能是使用 npx create-react-app your-project-name，并将所有文件从src移至新项目src，并将所有依赖项从package.json复制到新项目package.json。

for more on Create React App

尝试运行命令“ npm start”时出错

1 个答案: