"css.requireModuleExtension" is not allowed

[lisiyizu]

Version

5.0.0-beta.2

Environment info

"devDependencies": {
    "@babel/core": "^7.12.16",
    "@babel/eslint-parser": "^7.12.16",
    "@vue/cli-plugin-babel": "~5.0.0-beta.2",
    "@vue/cli-plugin-eslint": "~5.0.0-beta.2",
    "@vue/cli-service": "~5.0.0-beta.2",
    "babel-eslint": "^10.1.0",
    "eslint": "^7.24.0",
    "eslint-plugin-vue": "^7.6.0",
    "external-remotes-plugin": "^1.0.0",
    "node-sass": "^6.0.1",
    "path-browserify": "^1.0.1",
    "sass-loader": "^12.1.0",
    "vue": "2.5.17",
    "vue-template-compiler": "2.5.17",
    "webpack": "^5.47.0"
  },

Steps to reproduce

// vue.config.js
module.exports = {
  css: {
    requireModuleExtension: false
  }
}

[haoqunjiang]

https://next.cli.vuejs.org/migrations/migrate-from-v4.html#vue-cli-service

The css.requireModuleExtension option is removed. If you do need to strip the .module part in CSS Module file names, please refer to Working with CSS > CSS Modules for more guidance.