TypeError: Cannot read property ‘validateSchema’ of undefined

Do you want to request a feature or report a bug?

What is the current behavior?
const validateSchema = process.webpackModule.validateSchema;

TypeError: Cannot read property ‘validateSchema’ of undefined
at Object. (K:\web\07_Webpack_Test\node_modules\webpack-cli\bin\convert-argv.js:7:46)
at Module._compile (internal/modules/cjs/loader.js:678:30)
at Object.Module._extensions..js (internal/modules/cjs/loader.js:689:10)
at Module.load (internal/modules/cjs/loader.js:589:32)
at tryModuleLoad (internal/modules/cjs/loader.js:528:12)
at Function.Module._load (internal/modules/cjs/loader.js:520:3)
at Module.require (internal/modules/cjs/loader.js:626:17)
at require (internal/modules/cjs/helpers.js:20:18)
at Object. (K:\web\07_Webpack_Test\node_modules\webpack-dev-server\bin\webpack-dev-server.js:234:15)
at Module._compile (internal/modules/cjs/loader.js:678:30)
If the current behavior is a bug, please provide the steps to reproduce.
With webpack-cli 3.0.0 execute npm start script

What is the expected behavior?
The above operation should produce a bundle as per config file.
If this is a feature request, what is motivation or use case for changing the behavior?

Please mention other relevant information such as the browser version, Node.js version, webpack version, and Operating System.
“webpack”: “v4.10.2”
“webpack-cli”: “v3.0.0”
“OS”: “windows”

Author: Fantashit

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