我正在尝试使用Webpack 4从零开始构建React应用程序

尝试构建时出现以下错误。尽管已经安装了babel-core，但我也尝试安装@ babel / core，但是没有用

ERROR in ./src/index.js
Module build failed (from ./node_modules/babel-loader/lib/index.js):
Error: Cannot find module '@babel/core'
    at Function.Module._resolveFilename (module.js:538:15)
    at Function.Module._load (module.js:468:25)
    at Module.require (module.js:587:17)
    at require (internal/module.js:11:18)
    at Object.<anonymous> (/Users/digvijay.upadhyay/digvijayu/react_webpack_4_from_scratch/node_modules/babel-loader/lib/index.js:5:15)
    at Module._compile (module.js:643:30)
    at Object.Module._extensions..js (module.js:654:10)
    at Module.load (module.js:556:32)
    at tryModuleLoad (module.js:499:12)
    at Function.Module._load (module.js:491:3)
 @ multi (webpack)-dev-server/client?http://localhost:8080 ./src main[1]
Child html-webpack-plugin for "index.html":
     1 asset
    Entrypoint undefined = ./index.html
    [./node_modules/html-webpack-plugin/lib/loader.js!./src/index.html] 500 bytes {0} [built]
    [./node_modules/lodash/lodash.js] 527 KiB {0} [built]
    [./node_modules/webpack/buildin/global.js] (webpack)/buildin/global.js 489 bytes {0} [built]
    [./node_modules/webpack/buildin/module.js] (webpack)/buildin/module.js 497 bytes {0} [built]
ℹ ｢wdm｣: Failed to compile.

webpack.config.js

const HtmlWebPackPlugin = require("html-webpack-plugin");

const htmlPlugin = new HtmlWebPackPlugin({
  template: "./src/index.html",
  filename: "./index.html"
});

module.exports = {
  module: {
    rules: [
      {
        test: /\.js$/,
        exclude: /node_modules/,
        use: {
          loader: "babel-loader"
        }
      }
    ]
  },
  plugins: [htmlPlugin]
};

编辑：将包json文件添加到问题 package.json

"devDependencies": {
    "babel-core": "^6.26.3",
    "babel-loader": "^8.0.0",
    "babel-preset-env": "^1.7.0",
    "babel-preset-react": "^6.24.1",
    "html-webpack-plugin": "^3.2.0",
    "webpack": "^4.17.1",
    "webpack-cli": "^3.1.0",
    "webpack-dev-server": "^3.1.6"
  },
  "dependencies": {
    "@babel/core": "^7.0.0",
    "path": "^0.12.7",
    "react": "^16.4.2",
    "react-dom": "^16.4.2"
  }

{“名称”：“ boiler-plate-react-webpack-4”，“ main”：“ index.js”，“ scripts”：{“
start”：“ webpack-dev-server –mode development –open- -display-error-
details”，“ build-dev”：“ webpack –mode development”，“ build-prod”：“ webpack
–mode production”，“ test”：“ echo \”错误：未指定测试\ “ && exit 1”}，“
devDependencies”：{“ babel-core”：“ ^ 6.26.3”，“ babel-loader”：“ ^ 8.0.0”，“
babel-preset-env”：“ ^ 1.7。 0“，” babel-preset-react“：” ^ 6.24.1“，” html-
webpack-plugin“：” ^ 3.2.0“，” webpack“：” ^ 4.17.1“，” webpack-cli“： “ ^ 3.1。0“，”
webpack-dev-server“：” ^ 3.1.6“}，” dependencies“：{” @ babel / core“：” ^
7.0.0“，” path“：” ^ 0.12.7“，” react“：” ^ 16.4.2“，” react-dom“：” ^ 16.4.2“}}