无法使用webpack导入aws-sdk，并且npm已安装aws-sdk

Question

我在导入aws-sdk时遇到问题（或使用webpack进行构建）

我的代码是

var config = require('./config')
var AWS = require('aws-sdk');
AWS.config.region = config.region;

这会导致以下构建错误：

./node_modules/aws-sdk/apis/cognito-identity-2014-06-30.min.json中的错误模块解析失败：解析'module.exports = {“ v。 。'您可能需要适当的加载程序来处理此文件类型。

多次。

如果我使用代码

var config = require('./config')
var AWS = require('aws-sdk/dist/aws-sdk');
AWS.config.region = config.region;

我收到控制台错误

未捕获的TypeError：无法设置未定义的属性“ region”

我的webpack文件是：

module.exports = { 
  entry: 'entry.js',
  // Place output files in `./dist/my-app.js`
  output: {
    path: __dirname + '/dist',
    filename: 'my-app.js'
  },  
  resolve: {.
      extensions: [ '.js', '.json', '.jsx'].
  },  
  module: {
    rules: [
      {   
        test: /\.json$/,
        loader: 'json-loader'
      }   
    ]   
  }
};

而我的package.json是：

{
  "private": true,
  "dependencies": {
    "amazon-cognito-identity-js": "^2.0.9",
    "aws-sdk": "^2.261.1",
    "crypto-browserify": "^3.12.0",
    "js-cookie": "^2.2.0",
    "webpack-dev-server": "^3.1.4"
  },
  "devDependencies": {
    "json-loader": "^0.5.7",
    "webpack": "^4.12.0",
    "webpack-cli": "^3.0.8"
  },
  "scripts": {
    "build": "webpack --mode development",
    "serve": "webpack-dev-server --mode development --port 3000"
  }
} 

Answer 1

Webpack对此有一个未解决的问题：https : //github.com/webpack/webpack/issues/7082

添加type: 'javascript/auto'到json文件的Webpack配置中暂时解决了该问题：

  {
    type: 'javascript/auto',
    test: /\.json$/,
    use: 'json-loader'
  },