記錄一下坑

create-react-app

完成項(xiàng)目初始化

如果沒(méi)有安裝create-react-app矛紫，先安裝

 npm install create-react-app -g

然后運(yùn)行

create-react-app test-antd

然后運(yùn)行如下命令彈出webpack的配置

npm run eject

詢(xún)問(wèn)時(shí)輸入y確認(rèn)芹橡，過(guò)一會(huì)兒會(huì)多出一個(gè)config目錄

此時(shí)運(yùn)行

npm run start

報(bào)錯(cuò)：

查看package.json逛绵，明明安裝了babel-loader昨凡。

報(bào)錯(cuò)是因?yàn)榇藭r(shí)webpack已經(jīng)分為dev環(huán)境和prod環(huán)境，所以在package.json里漓库，我們把原來(lái)dependencies修改為devDependencies愿伴。

install以后npm run start 一下，看項(xiàng)目能否正常啟動(dòng)

不出意外呵扛，應(yīng)該就能看到上面的經(jīng)典logo

安裝antd

安裝相關(guān)的依賴(lài)

npm install --save antd 
npm install --save-dev babel-preset-es2015
npm install --save-dev babel-plugin-import

然后新建babelrc.的配置文件

{
  "presets": [
    "es2015",
    "react"
  ],
  "plugins": [
    [
      "import",
      {
        "libraryName": "antd",
        "style": "css"
      }
    ]
  ]
}

最后運(yùn)行

npm run start

就能啟動(dòng)項(xiàng)目

題外話(huà)

create-react-app默認(rèn)是用了react-scripts來(lái)啟動(dòng)項(xiàng)目每庆，當(dāng)我們r(jià)un eject之后，可以發(fā)現(xiàn)package.json里的script也發(fā)生了明顯的變化今穿，在根目錄的scripts文件夾里缤灵，我們可以看到啟動(dòng)的腳本文件。

// 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';

if (process.env.HOST) {
  console.log(
    chalk.cyan(
      `Attempting to bind to HOST environment variable: ${chalk.yellow(
        chalk.bold(process.env.HOST)
      )}`
    )
  );
  console.log(
    `If this was unintentional, check that you haven't mistakenly set it in your shell.`
  );
  console.log(`Learn more here: ${chalk.yellow('http://bit.ly/2mwWSwH')}`);
  console.log();
}

// We attempt to use the default port but if it is busy, we offer the user to
// run on a different port. `choosePort()` 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);
  });