Webpack和Express - 严重依赖关系警告 [英] Webpack and Express - Critical Dependencies Warning

问题描述

我有以下 webpack.config.ts ：

  var webpack = require（'webpack'）; 
 var path = require（'path'）; 
 
 module.exports = {
 
条目：[
'./api/bin/www.ts'
]，
输出：{
 path：path.resolve（__dirname，'./dist/api'），
 filename：'index.js'
}，
 module：{
装载机：[
 {test：/\tsts/，loader：'awesome-typescript-loader'}，
 {test：/\ json$/，loader：'json- loader'} 
] 
}，
 resolve：{
 extensions：[''，'.js'，'.ts'] 
}，
 target：'node'，
 node：{
 console：true，
 fs：'empty'，
 net：'empty'，
 tls：'empty '
} 
}; 
  

当我运行webpack时，我收到关于依赖关系的警告：

 警告in ./~/express/lib/view.js 
严重依赖关系：
 78：29-56依赖关系的请求是一个表达式
 @ ./~/express/lib/view.js 78：29-56 
  

我从这开始的快递服务器不过是一个 Hello World example和函数，应该，但我担心这个警告。 / p>

我的googlefu没有透露任何可行的解决方案。我已经看到这个问题的一个特殊实例，但解决方案是绕过不显示的警告。

解决方案

使用webpack- node-externals。

  const nodeExternals = require（'webpack-node-externals'）; 
 
 {
 target：'node'，
 externals：[nodeExternals（）]，
} 
  

https：// www。 npmjs.com/package/webpack-node-externals

I have the following webpack.config.ts:

var webpack = require( 'webpack' );
var path = require( 'path' );

module.exports = {

  entry: [
    './api/bin/www.ts'
  ],
  output: {
    path: path.resolve( __dirname, './dist/api' ),
    filename: 'index.js'
  },
  module: {
    loaders: [
      { test: /\.ts$/, loader: 'awesome-typescript-loader' },
      { test: /\.json$/, loader: 'json-loader' }
    ]
  },
  resolve: {
    extensions: [ '', '.js', '.ts' ]
  },
  target: 'node',
  node: {
    console: true,
    fs: 'empty',
    net: 'empty',
    tls: 'empty'
  }
};

When I run webpack I get a warning about a dependency:

WARNING in ./~/express/lib/view.js
Critical dependencies:
78:29-56 the request of a dependency is an expression
@ ./~/express/lib/view.js 78:29-56

The express server I start with this is no more than a Hello World example and functions as should but I am concerned about this warning.

My googlefu hasn't revealed any passable solutions. I have seen one particular instance of this problem but the solutions were to bypass the warning by not showing it.

解决方案

Use webpack-node-externals.

const nodeExternals = require('webpack-node-externals');

{
  target: 'node',
  externals: [nodeExternals()],
}

https://www.npmjs.com/package/webpack-node-externals

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