What is the correct way to load polyfill for Promise in webpack 2?

Question

webpack

Lazy man's path:
webpack.config.js

{
     entry: ['core-js/fn/promise', './main.js']
};

Is there a universal way to load a promise on demand:

if('Promise' in windoW){
    // main.js
  }else{
    // Promise polyfill + 
    // main.js	
}

- Do two assemblies and load the right one?
- Make a custom script loader according to the condition of the polyfill in its download cobec to load the main file?
What solutions do you have?
The main condition is if there is no promise, then we will load its polyfill.

Answer 1

For example like this:

<script>
    window.Promise || document.write('<script src="https://unpkg.com/[email protected]/dist/es6-promise.auto.min.js"><\/script>');
</script>

put in head