Webpack:TypeError:无法读取未定义的属性“属性" [英] Webpack: TypeError: Cannot read property 'properties' of undefined

问题描述

这里是有问题的分支和回购:https://github.com/Futuratum/moon.holdings/tree/dev

Here is the branch and repo in question: https://github.com/Futuratum/moon.holdings/tree/dev

/Users/leongaban/projects/Futuratum/moon.holdings/node_modules/webpack-cli/bin/config-yargs.js:89描述:optionsSchema.definitions.output.properties.path.description，

/Users/leongaban/projects/Futuratum/moon.holdings/node_modules/webpack-cli/bin/config-yargs.js:89 describe: optionsSchema.definitions.output.properties.path.description,

不知道为什么会出现这个错误，但我从 Webpack 3 升级到了 4.

Not sure why I'm getting this error, but I upgraded from Webpack 3 to 4.

webpack

/* eslint-disable no-console */
import webpack from 'webpack';
import HtmlWebpackPlugin from 'html-webpack-plugin';
import ExtractTextPlugin from 'extract-text-webpack-plugin';
import CopyWebpackPlugin from 'copy-webpack-plugin';
import path from 'path';

const moonholdings = path.resolve(__dirname, 'moonholdings');
const app = path.resolve(__dirname, 'app');
const nodeModules = path.resolve(__dirname, 'node_modules');

const HtmlWebpackPluginConfig = new HtmlWebpackPlugin({
  template: path.join(__dirname, '/app/index.html'),
  inject: 'body'
});

const ExtractTextPluginConfig = new ExtractTextPlugin({
  filename: 'moonholdings.css',
  disable: false,
  allChunks: true
});

const CopyWebpackPluginConfigOptions = [{
  from: 'app/static',
  to: 'static/'
}];

const CopyWebpackPluginConfig = new CopyWebpackPlugin(CopyWebpackPluginConfigOptions);

const PATHS = {
  app,
  build: moonholdings
};

const LAUNCH_COMMAND = process.env.npm_lifecycle_event;

const isProduction = LAUNCH_COMMAND === 'production';
process.env.BABEL_ENV = LAUNCH_COMMAND;

const productionPlugin = new webpack.DefinePlugin({
  'process.env': {
    NODE_ENV: JSON.stringify('production')
  }
});

const base = {
  entry: ['babel-polyfill', PATHS.app],
  performance: {
    hints: false,
    maxAssetSize: 1000000
  },
  output: {
    path: PATHS.build,
    publicPath: '/',
    filename: 'index_bundle.js'
  },
  resolve: {
    modules: [app, nodeModules]
  },
  module: {
    rules: [
      {
        test: /\.js$/,
        loader: 'babel-loader',
        exclude: /node_modules/
      },
      {
        test: /\.s?css/,
        use: [
          'style-loader',
          'css-loader',
          'sass-loader'
        ]
      },
      {
        test: /\.(png|jpg|jpeg|gif|svg|woff|woff2|ttf|eot)/,
        loader: 'file-loader?name=[path][name].[ext]'
      }
    ]
  }
};

const developmentConfig = {
  devtool: 'inline-source-map',
  devServer: {
    contentBase: moonholdings
  },
  plugins: [
    CopyWebpackPluginConfig,
    ExtractTextPluginConfig,
    HtmlWebpackPluginConfig
  ]
};

const productionConfig = {
  devtool: false,
  plugins: [
    CopyWebpackPluginConfig,
    ExtractTextPluginConfig,
    HtmlWebpackPluginConfig,
    productionPlugin
  ]
};

export default Object.assign(
  {}, base,
  isProduction === true ? productionConfig : developmentConfig
);

package.json

{
  "name": "moon.holdings",
  "version": "1.0.0",
  "description": "Cryptocurrency asset portfolio",
  "main": "index.js",
  "repository": "https://github.com/Futuratum/moon.holdings.git",
  "author": "Leon Gaban <[e-mail]>",
  "license": "MIT",
  "scripts": {
    "start": "webpack && webpack-dev-server",
    "webpack": "webpack-dev-server",
    "dev": "webpack-dev-server",
    "build": "webpack -p",
    "production": "webpack -p",
    "test": "yarn run test-eslint; yarn run test-jest:update",
    "test-eslint": "eslint app",
    "test-eslint:fix": "eslint --fix app",
    "test-sasslint": "./node_modules/.bin/sass-lint 'app/**/*.scss' -v -q",
    "test-jest": "jest",
    "test-jest:watch": "jest --watch",
    "test-jest:coverage": "jest --coverage",
    "test-jest:update": "jest --updateSnapshot"
  },
  "setupFiles": [
    "<rootDir>/config/polyfills.js",
    "<rootDir>/src/setupTests.js"
  ],
  "now": {
    "name": "moonholdings",
    "alias": "moon.holdings"
  },
  "jest": {
    "moduleNameMapper": {},
    "moduleFileExtensions": [
      "js",
      "jsx"
    ],
    "moduleDirectories": [
      "node_modules",
      "app"
    ],
    "setupTestFrameworkScriptFile": "./app/utils/testConfigure.js"
  },
  "dependencies": {
    "axios": "^0.18.0",
    "babel-cli": "^6.26.0",
    "babel-core": "^6.26.0",
    "babel-eslint": "^8.2.2",
    "babel-loader": "^7.1.4",
    "babel-plugin-transform-async-to-generator": "^6.24.1",
    "babel-plugin-transform-es2015-destructuring": "^6.23.0",
    "babel-plugin-transform-es2015-modules-commonjs": "^6.26.0",
    "babel-plugin-transform-object-rest-spread": "^6.26.0",
    "babel-plugin-transform-runtime": "^6.23.0",
    "babel-polyfill": "^6.26.0",
    "babel-preset-env": "^1.6.1",
    "babel-preset-es2015": "^6.24.1",
    "babel-preset-react": "^6.24.1",
    "babel-preset-react-hmre": "^1.1.1",
    "babel-preset-stage-0": "^6.24.1",
    "babel-register": "^6.26.0",
    "copy-webpack-plugin": "^4.5.0",
    "css-loader": "^0.28.10",
    "enzyme": "^3.3.0",
    "enzyme-adapter-react-16": "^1.1.1",
    "enzyme-to-json": "^3.3.1",
    "eslint": "^4.18.2",
    "eslint-config-airbnb": "^16.1.0",
    "eslint-import-resolver-node": "^0.3.2",
    "eslint-plugin-dependencies": "^2.4.0",
    "eslint-plugin-import": "^2.9.0",
    "eslint-plugin-jsx-a11y": "^6.0.3",
    "eslint-plugin-react": "^7.7.0",
    "extract-text-webpack-plugin": "^3.0.2",
    "file-loader": "^1.1.11",
    "flexboxgrid": "^6.3.1",
    "git-hooks": "^1.1.10",
    "history": "^4.7.2",
    "html-webpack-plugin": "^3.0.6",
    "jest": "^22.4.2",
    "lodash": "^4.17.10",
    "node-sass": "^4.7.2",
    "path-to-regexp": "^2.2.0",
    "ramda": "^0.25.0",
    "react": "^16.2.0",
    "react-dom": "^16.2.0",
    "react-hot-loader": "^4.0.0",
    "react-redux": "^5.0.7",
    "react-router": "^4.2.0",
    "react-router-dom": "^4.2.2",
    "react-router-redux": "^4.0.8",
    "react-sortable-hoc": "^0.6.8",
    "react-test-renderer": "^16.3.2",
    "redux": "^3.7.2",
    "redux-mock-store": "^1.5.1",
    "redux-thunk": "^2.2.0",
    "rest": "^2.0.0",
    "sass-lint": "^1.12.1",
    "sass-loader": "^6.0.7",
    "style-loader": "^0.20.2",
    "svg-inline-loader": "^0.8.0",
    "svg-loader": "^0.0.2",
    "url-loader": "^1.0.1",
    "webpack": "^4.20.2",
    "webpack-cli": "^2.0.10",
    "webpack-dev-server": "2.11.1"
  }
}

推荐答案

尝试安装最新的 LTS 版本的 Node 并再次测试.使用最新的 LTS 节点和 npm 对我来说效果很好.

Try to install latest LTS version of Node and test again. Works perfectly fine for me with latest LTS node and npm.

这篇关于Webpack:TypeError:无法读取未定义的属性“属性"的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！