How do I use core-js with Babel polyfills?

What is core-js and how does it relate to Babel?

Core-js is a modular standard library for JavaScript that includes polyfills for ECMAScript features. Babel uses core-js to provide polyfills for features that may not be available in all environments.

How can I configure Babel to use core-js for polyfills?

You can configure Babel to use core-js by installing it via npm and then setting the 'useBuiltIns' option in your Babel configuration to 'entry' or 'usage'.

Can you give me an example of how to set this up in my project?

Sure! First, install core-js with npm install core-js. Then, in your Babel configuration file, add: "presets": [["@babel/preset-env", {"useBuiltIns": "entry", "corejs": 3}]]. Finally, import 'core-js/stable' at the top of your entry file.

What are the benefits of using core-js with Babel?

Using core-js with Babel allows you to ensure that your code runs consistently across different environments by providing necessary polyfills for modern JavaScript features.