ValidationError: webpack Dev Server Invalid Options - Add liveReload in validation schema.

[lwxbr]

• Operating System: Windows 10
• Node Version: v10.15.0
• NPM Version: v6.4.1
• webpack Version: 4.15.1
• webpack-dev-server Version: 3.1.4
• Browser: Google Chrome version 75.0.3770.142 64 bits.

• This is a bug
• This is a modification request

Code

// vue.config.js
module.exports = {
    devServer: {
      host: '0.0.0.0',
      disableHostCheck: true,
      port: 8080,
      hot: false,
      liveReload: false,
    },
  }

Expected Behavior

The webpack dev server should run without problems.

Actual Behavior

The bug is that the option 'liveReload' option that is not in the schema, so it's triggering this error:

ValidationError: webpack Dev Server Invalid Options

options should NOT have additional properties

    at validateOptions (C:\Users\Lucas\Desktop\seed-view\node_modules\webpack-dev-server\node_modules\schema-utils\src\validateOptions.js:34:11)
    at new Server (C:\Users\Lucas\Desktop\seed-view\node_modules\webpack-dev-server\lib\Server.js:55:3)
    at serve (C:\Users\Lucas\Desktop\seed-view\node_modules\@vue\cli-service\lib\commands\serve.js:137:20)
    at process._tickCallback (internal/process/next_tick.js:68:7)
    at Function.Module.runMain (internal/modules/cjs/loader.js:745:11)
    at startup (internal/bootstrap/node.js:283:19)
    at bootstrapNodeJSCore (internal/bootstrap/node.js:743:3)
error Command failed with exit code 1.

[alexander-akait]

Update webpack-dev-server version https://github.com/webpack/webpack-dev-server/blob/master/lib/options.json#L183

[lwxbr]

vuejs/vue-cli#4368