webpack中怎么配置服务热更新

蜗牛 互联网技术资讯 2022-03-17 288 0

这篇文章主要讲解了“webpack中怎么配置服务热更新”,文中的讲解内容简单清晰,易于学习与理解,下面请大家跟着小编的思路慢慢深入,一起来研究和学习“webpack中怎么配置服务热更新”吧!

  热更新的意思是:左边打开浏览器,右边编译器,当编译器中的内容改变,按下ctrl+s,左边的浏览器会跟着编译器的内容发生改变

  配置devServer

  devServer有四个目录结构:

  constpath=require('path')//path是一个常量不能更改,path需要引入varwebpack=require('webpack')

  module.exports={//bundle入口

  entry:{

  entry:'./src/entry.js',//下面的entry是随便起的名字

  entry2:'./src/entry2.js'//有两个入口也要有两个出口

  },//bundle输出

  output:{

  path:path.resolve(__dirname,'dist'),//绝对路径

  filename:'[name].js'//可重命名当有多个入口文件时,出口文件用name,说明打包的出口文件和入口文件名相同

  },

  module:{},

  plugins:[],

  devServer:{

  contentBase:path.resolve(__dirname,'dist'),

  host:'10.212.109.18',

  compress:true,

  port:8087

  }

  }

  npminstallwebpack-dev-server–save-dev安装一个只在开发中使用的webpack-dev-server

  然后输入webpack-dev-server会报出不是内部命令,因为安装到了node_modules里了,找不到,所以需要package.json里scripts里面的内容删除,自己在里面写“server”:”webpack-dev-server”

  在package.json里面配置好server后输入:npmrunserver会报错

  >y@1.0.0serverF:\webLearn\webpackLearn

  >webpack-dev-server

  TheCLImovedintoaseparatepackage:webpack-cli.

  Pleaseinstall'webpack-cli'inadditiontowebpackitselftousetheCLI.->Whenusingnpm:npminstallwebpack-cli-D

  ->Whenusingyarn:yarnaddwebpack-cli-Dmodule.js:549

  throwerr;

  ^Error:Cannotfindmodule'webpack-cli/bin/config-yargs'

  atFunction.Module._resolveFilename(module.js:547:15)

  atFunction.Module._load(module.js:474:25)

  atModule.require(module.js:596:17)

  atrequire(internal/module.js:11:18)

  atObject.<anonymous>(F:\webLearn\webpackLearn\node_modules\webpack-dev-server\bin\webpack-dev-server.js:65:1)

  atModule._compile(module.js:652:30)

  atObject.Module._extensions..js(module.js:663:10)

  atModule.load(module.js:565:32)

  attryModuleLoad(module.js:505:12)

  atFunction.Module._load(module.js:497:3)

  npmERR!codeELIFECYCLE

  npmERR!errno1npmERR!y@1.0.0server:`webpack-dev-server`

  npmERR!Exitstatus1npmERR!

  npmERR!Failedatthey@1.0.0serverscript.

  npmERR!Thisisprobablynotaproblemwithnpm.Thereislikelyadditionalloggingoutputabove.

  npmERR!Acompletelogofthisruncanbefoundin:

  npmERR!C:\Users\文件夹名称\AppData\Roaming\npm-cache\_logs\2018-07-10T08_59_23_339Z-debug.log

  原因是找不到webpack-cli这个包,所以用npminstallwebpack-cli安装webbpack-cli

  安装完成后执行==npmrunserver==会出现ru下,就大功告成了,复制你的端口地址在浏览器上运行即可

  如下:

  >y@1.0.0serverF:\webLearn\webpackLearn

  >webpack-dev-server

  i「wds」:Projectisrunningathttp://10.212.109.18:8087/i「wds」:webpackoutputisservedfrom/

  i「wds」:ContentnotfromwebpackisservedfromF:\webLearn\webpackLearn\dist

  ‼「wdm」:Hash:0a1133d150c765ff1b91

  Version:webpack4.15.1Time:12622ms

  Builtat:2018-07-1017:01:51

  AssetSizeChunksChunkNames

  entry2.js139KiB0[emitted]entry2

  entry.js139KiB1[emitted]entry

  Entrypointentry=entry.js

  Entrypointentry2=entry2.js

  [3](webpack)/hot/emitter.js77bytes{0}{1}[built]

  [4](webpack)/hot/log.js1010bytes{0}{1}[optional][built]

  [5](webpack)/hotsyncnonrecursive^\.\/log$170bytes{0}{1}[built]

  [8]./node_modules/html-entities/index.js231bytes{0}{1}[built]

  [10](webpack)-dev-server/client/overlay.js3.58KiB{0}{1}[built]

  [12](webpack)-dev-server/client/socket.js1.05KiB{0}{1}[built]

  [13]./node_modules/loglevel/lib/loglevel.js7.68KiB{0}{1}[built]

  [14]./node_modules/ansi-regex/index.js135bytes{0}{1}[built]

  [15]./node_modules/strip-ansi/index.js161bytes{0}{1}[built]

  [22]./node_modules/url/url.js22.8KiB{0}{1}[built]

  [23](webpack)-dev-server/client?http://10.212.109.18:80877.75KiB{0}{1}[built][24]./src/entry2.js23bytes{0}[built]

  [25]multi(webpack)-dev-server/client?http://10.212.109.18:8087./src/entry2.js40bytes{0}[built][26]./src/entry.js60bytes{1}[built]

  [27]multi(webpack)-dev-server/client?http://10.212.109.18:8087./src/entry.js40bytes{1}[built]

  +13hiddenmodules

  WARNINGinconfiguration

The'mode'optionhasnotbeenset,webpackwillfallbackto'production'forthisvalue.Set'mode'optionto'development'or'production'toenabledefaultsforeachenvironment.

  Youcanalsosetitto'none'todisableanydefaultbehavior.Learnmore:https://webpack.js.org/concepts/mode/i「wdm」:Compiledwithwarnings.

感谢各位的阅读,以上就是“webpack中怎么配置服务热更新”的内容了,经过本文的学习后,相信大家对webpack中怎么配置服务热更新这一问题有了更深刻的体会,具体使用情况还需要大家实践验证。这里是蜗牛博客,小编将为大家推送更多相关知识点的文章,欢迎关注!

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