Documenting .mjs, .jsx or files with any other extension

By default, jsdoc (used internally by jsdoc2md) does not recognise .mjs files. To override this, you must update the includePattern in the jsdoc configuration. Store the new pattern in a file called jsdoc.conf. This pattern includes .js, .jsdoc, .jsx and .mjs:

$ cat jsdoc.conf
{
  "source": {
    "includePattern": ".+\\.(js(doc|x)?|mjs)$"
  }
}

Now, launch jsdoc2md using this new jsdoc configuration, for example:

$ jsdoc2md -c jsdoc.conf index.mjs > docs.md