Core JS vs Babel Polyfill: Which Should I Use?

What are the main differences between core-js and Babel polyfill?

Core-js is a modular standard library for JavaScript, while Babel polyfill includes core-js and regenerator-runtime to support async functions.

When should I use core-js instead of Babel polyfill?

Use core-js if you want more control over polyfilling specific features. Babel polyfill is better for broader compatibility.

Are there any performance differences between the two?

Yes, core-js can be more performant since it allows you to include only the polyfills you need, reducing bundle size.

Can I use both core-js and Babel polyfill together?

It's generally not recommended to use both together as they can conflict, but you can configure Babel to use core-js selectively.

What are some common use cases for each?

Core-js is great for modern applications needing specific features, while Babel polyfill is useful for legacy support in older browsers.