react-router-dom@4.0.0 需要 react@^15 的对等体，但已安装 none。您必须自己安装对等依赖项

Question

我已经使用 npm install 安装了所有必需的库，我也安装了 npm install --save react-router-dom@4.0.0，但我仍然收到此错误。

我的Package.json

  "author": "",
  "license": "ISC",
  "devDependencies": {
    "babel-core": "^6.2.1",
    "babel-loader": "^6.2.0",
    "babel-preset-es2015": "^6.1.18",
    "babel-preset-react": "^6.1.18",
    "chai": "^3.5.0",
    "chai-jquery": "^2.0.0",
    "jquery": "^2.2.1",
    "jsdom": "^8.1.0",
    "mocha": "^2.4.5",
    "react-addons-test-utils": "^0.14.7",
    "webpack": "^1.12.9",
    "webpack-dev-server": "^1.14.0"
  },
  "dependencies": {
    "babel-preset-stage-1": "^6.1.18",
    "lodash": "^3.10.1",
    "react": "^15.6.2",
    "react-dom": "^0.14.3",
    "react-redux": "4.3.0",
    "react-router": "^2.0.1",
    "react-router-dom": "^4.0.0",
    "redux": "^3.0.4"
  }

在更新 react、redux、react-redux 之后，我没有收到任何警告，但在运行 npm start

之后出现以下错误

> node ./node_modules/webpack-dev-server/bin/webpack-dev-server.js

events.js:160
      throw er; // Unhandled 'error' event
      ^

Error: listen EADDRINUSE 127.0.0.1:8080
    at Object.exports._errnoException (util.js:1020:11)
    at exports._exceptionWithHostPort (util.js:1043:20)
    at Server._listen2 (net.js:1258:14)
    at listen (net.js:1294:10)
    at net.js:1404:9
    at GetAddrInfoReqWrap.asyncCallback [as callback] (dns.js:62:16)
    at GetAddrInfoReqWrap.onlookup [as oncomplete] (dns.js:81:10)
npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! redux-simple-starter@1.0.0 start: `node ./node_modules/webpack-dev-server/bin/webpack-dev-server.js`
npm ERR! Exit status 1
npm ERR! 
npm ERR! Failed at the redux-simple-starter@1.0.0 start script.
npm ERR! This is probably not a problem with npm. There is likely additional logging output above.

npm ERR! A complete log of this run can be found in:
npm ERR!     /Users/myhome/.npm/_logs/2017-12-23T00_38_08_579Z-debug.log

Answer 1

您的 package.json

需要 React

在 package.json 所在的文件夹中尝试以下操作：

npm install react --save

如果 react 已经存在于您的 package.json 中，请确认版本高于 15.0。

如果这不能解决您的错误，请向我们提供您的 package.json

Answer 2

在@rieckpil 的帮助下，我按照以下步骤解决了我的问题。

1：在这个 page 上，我收集了以下所有库的最新版本 react、react-dom、react-redux、react-router、react-router-dom、 redux 并将其替换为我的 package.json 文件。

2: 运行 npm install

3: 运行 npm start。如果出现上述错误，只需重新启动计算机并再次运行 npm start。

react-router-dom@4.0.0 需要 react@^15 的对等体，但已安装 none。您必须自己安装对等依赖项

react-router-dom@4.0.0 requires a peer of react@^15 but none is installed. You must install peer dependencies yourself

reactjs

react-router

npm-install

react-router-dom