A searchable guide to the complete WordPress Icon Library (@wordpress/icons) package from Gutenberg.
import { Icon, undo } from '@wordpress/icons';
<Icon icon={undo} />
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" aria-hidden="true" focusable="false"><path d="M18.3 11.7c-.6-.6-1.4-.9-2.3-.9H6.7l2.9-3.3-1.1-1-4.5 5L8.5 16l1-1-2.7-2.7H16c.5 0 .9.2 1.3.5 1 1 1 3.4 1 4.5v.3h1.5v-.2c0-1.5 0-4.3-1.5-5.7z"></path></svg>
undo – WordPress Icon Library