How do I use Babel for polyfills?

How do I use Babel for polyfills?

To use Babel for polyfills, you can include the @babel/preset-env preset in your Babel configuration.

What are polyfills and why do I need them?

Polyfills are scripts that provide modern functionality on older browsers that do not support it natively. They ensure compatibility.

Can you give me an example of how to set it up?

Sure! First, install Babel and the preset: npm install --save-dev @babel/core @babel/preset-env. Then, create a .babelrc file with the following content: { "presets": ["@babel/preset-env"] }.

Do I need to include polyfills manually?

You can include polyfills manually or use a tool like core-js to automatically include them based on your target browsers.