[AskDev] GatsbyJS and SEO: how to manage internal routing?

With GatsbyJS you can handle navigation using relative paths.

For example, if I have 2 pages under the articles path:

www.myblog.com/articles/firstArticle
www.myblog.com/articles/secondArticle

and I want to insert a link in the secondArticle that points to the firstArticle, I can do this:

Hello, I'm the second article, and here you can find the
[first article](./firstArticle)

This works well in the site, since Gatsby takes care of the navigation between pages.

But the HTML that Gatsby generates is (more or less) this one:

Hello, I'm the second article, and here you can find the
<a href="./firstArticle">first article</a>

So, my question is: do crawlers understand that the linked page is

www.myblog.com/articles/firstArticle
and not
www.myblog.com/articles/secondArticle/firstArticle

?

So, how do you link pages between the same blog? Absolute URL, relative path or something else?