安装“ aws-amplify”时出现未定义错误的“ crypto”

Question

我完全陷入了这个未知错误。

我安装了“ aws-amplify”以使用aws cognito并对用户进行身份验证。 但是随后出现以下错误，并且以某种方式我无法解决此问题...

有人可以帮我吗？ （我尝试安装“ crypto”，但并没有帮助我解决）

TypeError: Cannot read property 'crypto' of undefined

package.json

{
  "name": "app",
  "version": "1.0.0",
  "description": "",
  "main": "index.js",
  "homepage": "/",
  "scripts": {
    "dev": "export NODE_ENV=development && webpack-dev-server --mode development --port 8001 --contentBase=dist",
    "build:prod": "export NODE_ENV=production && webpack --mode production",
    "build:dev": "export NODE_ENV=development && webpack --mode development"
  },
  "author": "",
  "license": "ISC",
  "devDependencies": {
    "babel-core": "^6.26.3",
    "babel-loader": "^7.1.5",
    "babel-plugin-transform-class-properties": "^6.24.1",
    "babel-polyfill": "^6.26.0",
    "babel-preset-env": "^1.7.0",
    "babel-preset-es2015": "^6.24.1",
    "babel-preset-react": "^6.24.1",
    "css-loader": "^1.0.0",
    "file-loader": "^1.1.11",
    "html-webpack-plugin": "^3.2.0",
    "json-loader": "^0.5.7",
    "style-loader": "^0.22.0",
    "url-loader": "^1.0.1",
    "webpack": "^4.16.5",
    "webpack-cli": "^3.1.0",
    "webpack-dev-server": "^3.1.5"
  },
  "dependencies": {
    "aws-amplify": "^1.0.5",
    "aws-amplify-react": "^1.0.5",
    "aws-sdk": "^2.292.0",
    "react": "^16.4.2",
    "react-dom": "^16.4.2",
    "react-redux": "^5.0.7",
    "react-router-dom": "^4.3.1",
    "redux": "^4.0.0",
    "redux-logger": "^3.0.6",
    "redux-thunk": "^2.3.0"
  }
}

webpack.conf.js

const path = require('path')
const webpack = require('webpack')
const HtmlWebpackPlugin = require('html-webpack-plugin')

module.exports = {
  resolve: {
    extensions: ['.js', '.jsx']
  },

  entry: {
    main: ['babel-polyfill', path.resolve(__dirname, 'src/index.jsx')]
  },

  output: {
    path: path.resolve(__dirname, 'dist'),
    filename: '[name].js',
    // publicPath: './'
  },

  devServer: {
    historyApiFallback: true
  },

  devtool: process.env.NODE_ENV === 'development' ? 'source-map' : false,

  module: {
    rules: [
      {
        test: /\.(js|jsx)$/,
        exclude: '/node_modules/',
        use: [
          {
            loader: 'babel-loader',
            options: {
              presets: ['env', 'react'],
              plugins: ['transform-class-properties']
            }
          }
        ]
      },
      {
        test: /\.css$/,
        use: [
          'style-loader',
          { loader: 'css-loader'}
        ]
      },
      {
        test: /\.(png|jpg|gif)$/,
        loader: 'file-loader',
        options: {},
      },
      {
        include: path.resolve(__dirname, 'src'),
        test: /\.json$/,
        use: {
          loader: 'json-loader',
        },
      },
    ]
  },

  optimization: {
    splitChunks: {
      name: 'vendor',
      chunks: 'initial',
      // test: '/node_modules/',
      // enforce: true
    }
  },

  plugins: [
    new webpack.ProgressPlugin(),
    new HtmlWebpackPlugin({ template: './src/index.html' }),
    new webpack.DefinePlugin({
      'process.env.NODE_ENV': JSON.stringify(process.env.NODE_ENV)
    })
  ]
}