I was able to get there by doing the following.
import * as wpDate from "@wordpress/date";
You can find the very limited documentation on that here: https://developer.wordpress.org/block-editor/reference-guides/packages/packages-date/
I was able to use the following:
const post = wp.data.select("core/editor").getCurrentPost();
const postDate = wpDate.format("d|m|Y", post.date);
Then, when I needed it:
<div>
<RichText
className="snug huge"
placeholder="Your title here"
onChange={(content) => setAttributes({ title: content })}
value={attributes.title}
tagName="h1"
/>
<p>{postDate}</p>
</div>