MDX advertises itself as "markdown + components", but its not commonmark compatible. I tried using it a few years ago. In the process, I migrated over some regular markdown documents and they render incorrectly using MDX.
I filed a bug (this was a few years ago) and I was told commonmark compatibility was an explicit non goal for the project. Meh.
I filed a bug (this was a few years ago) and I was told commonmark compatibility was an explicit non goal for the project. Meh.