Fix to not serialize as link (auto), code (indented)

Author: wooorm

package.json

@@ -35,9 +35,11 @@
   "dependencies": {
     "mdast-util-mdx-expression": "~0.1.0",
     "mdast-util-mdx-jsx": "~0.1.0",
-    "mdast-util-mdxjs-esm": "~0.1.0"
+    "mdast-util-mdxjs-esm": "~0.1.0",
+    "mdast-util-to-markdown": "^0.6.1"
   },
   "devDependencies": {
+    "mdast-util-from-markdown": "^0.8.0",
     "micromark-extension-mdx": "^0.1.0",
     "micromark-extension-mdxjs": "^0.1.0",
     "nyc": "^15.0.0",

test.js

@@ -198,5 +198,18 @@ test('mdast -> markdown', function (t) {
     'should support expressions'
   )
 
+  t.deepEqual(
+    toMarkdown(
+      {
+        type: 'link',
+        url: 'tel:123',
+        children: [{type: 'text', value: 'tel:123'}]
+      },
+      {extensions: [mdx.toMarkdown]}
+    ),
+    '[tel:123](tel:123)\n',
+    'should use link (resource) instead of link (auto)'
+  )
+
   t.end()
 })

to-markdown.js

@@ -1,22 +1,15 @@
 var expression = require('mdast-util-mdx-expression/to-markdown')
 var jsx = require('mdast-util-mdx-jsx/to-markdown')
 var esm = require('mdast-util-mdxjs-esm/to-markdown')
-
-module.exports = configure()
-
-function configure() {
-  var extensions = [expression, jsx, esm]
-  var index = -1
-  var unsafe = []
-  var handlers = {}
-  var extension
-
-  while (++index < extensions.length) {
-    extension = extensions[index]
-    unsafe = unsafe.concat(extension.unsafe || [])
-    // istanbul ignore next - handlers always exists, for now.
-    handlers = Object.assign(handlers, extension.handlers || {})
-  }
-
-  return {unsafe: unsafe, handlers: handlers}
-}
+var configure = require('mdast-util-to-markdown/lib/configure')
+
+var base = configure(
+  {handlers: {}, join: [], unsafe: [], options: {}},
+  {extensions: [expression, jsx, esm]}
+)
+
+module.exports = Object.assign(base.options, {
+  handlers: base.handlers,
+  join: base.join,
+  unsafe: base.unsafe
+})