webpack-dev-server 4.0.0-beta.2

v4.0.0-beta.2

on Node.js Yarn

4.0.0-beta.2 (2021-04-06)

⚠ BREAKING CHANGES

• the openPage option and the --open-page CLI option were removed in favor { open: ['/my-page', '/my-other-page/'] } for Node.js API and --open-target [URL] (without [URL] dev server will open a browser using the host option value) and --open-app <browser> for CLI
• the useLocalIp option was removed in favor { host: 'local-ip' }, alternative you can provide values: local-ipv4 for IPv4 and local-ipv6 for IPv6
• stdin option was removed in favor --watch-options-stdin
• injectClient and injectHot was removed in favor client.needClientEntry and client.needHotEntry

Features

• added the watchFiles option, now you can reload server on file changes, for example { watchFiles: ['src/**/*.php', 'public/**/*'] } (#3136) (d73213a)
• added more CLI options, please run webpack server --help (#3148) (03a2b27)
• enable overlay by default (#3108) (5e05e48)
• you can specify multiple targets and browsers for the open option, i.e. { open: { target: ['/my-page', '/my-other-page'], app: ['google-chrome', '--incognito'] } } (e3c2683)

Bug Fixes

• /webpack-dev-server url shows list of files (#3101) (b3374c3)

• dev server client compatibility with IE11/IE10/IE9 (#3129) (1e3e656)

  • For IE11/IE10 you need polyfill fetch() and Promise, example:

  module.exports = {
    entry: {
      entry: [
        'whatwg-fetch', 
        'core-js/features/promise', 
        './entry.js'
      ],
    },
  };

  • For IE9 you need polyfill fetch() and Promise and use sockjs for communications (because WebSocket is not supported), example:

  module.exports = {
    entry: {
      entry: [
        'whatwg-fetch', 
        'core-js/features/promise', 
        './entry.js'
      ],
    },
    devServer: {
      transportMode: 'sockjs',
    },
  };

  IE8 is not supported

• hostname resolving (#3128) (cd39491)

• improve CLI options (#3151) (09fa827)

• output description on invalid options (#3154) (2e02978)

• prefer to open the host option (#3115) (7e525eb)

• reduce number of dependencies