(Hi, I've tried the code on this page
https://vuejs.org/guide/essentials/component-basics.html#dom-template-parsing-caveats

And defineEmits(['enlarge-text']) is not optional according to the message in the playground console:
"Extraneous non-emits event listeners (enlargeText) were passed to component but could not be automatically inherited because component renders fragment or text root nodes. If the listener is intended to be a component custom event listener only, declare it using the "emits" option.
at <BlogPostkey=3title="Why Vue is so fun"onEnlargeText=fn>
at "

Can the description please be edited? Thank you)