Babel polyfill与webpack [英] Babel polyfill with webpack

问题描述

我需要将 importbabel-polyfill包含在每个条目文件的顶部，还是足够让 babel-polyfill只需在webpack.config文件中定义我被polyfill文档困惑，仍然收到以下错误：只允许一个babel-polyfill实例

我的webpack.config简而言之：

  entry1：['babel-polyfill'，'homepage.js']，
 entry2：['babel-polyfill'，'not-homepage.js']，
 entry3：['babel-polyfill'，'contacts.js'] 
  pre> 
 
解决方案
您正在收到错误，因为您正在调用babel-polyfill的多个实例。
 
 
 
您可以选择任何两个选项，但不能同时选择。 
 
 
 
如果您使用webpack，请勿将单独的条目指向单独的文件，而是指向一个目录。
 
 
 
例如：如果您的文件在app / js中
  module.exports = {
条目：[' babel-polyfill'，'./app/js'] 
}; 
  
 
 
 
 
 
如果您决定导入，请确保您导入/要求
 
 
 $ / $ $ $ $ $ $ $ $ $ $ $ $ $ $ $
Do I need to include import "babel-polyfill" to the top of each entry file, or is it enough to have babel-polyfill rule just in webpack.config file? I am confused by polyfill docs and still getting following error: only one instance of babel-polyfill is allowed

My webpack.config in short:
  entry1: ['babel-polyfill', 'homepage.js'],
  entry2: ['babel-polyfill', 'not-homepage.js'],
  entry3: ['babel-polyfill', 'contacts.js']

解决方案
You are getting the error because you are calling multiple instances of the babel-polyfill.

You can choose any of the two option, but not both. 

If you use webpack, don't put separate entries pointing to separate files, but rather point to a directory.

E.g: If your files are in app/js
module.exports = {
   entry: ['babel-polyfill', './app/js']
};



  
If you decide to import it, make sure you import/require it only once
  at the entry-point to your application, before anything else is
  called.


                        
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