patch-package
--- a/index.js
+++ b/index.js
@@ -31,12 +31,16 @@ function processFile(filePath) {
   .then(middleware)
   .then(getDefaults)
   .then(data => {
+    if (data._draft && !conf.draft) return;
+
     // If _layout, render it:
     if (data._layout) return render(data);
     // Else, return _body:
     else return data._body;
   })
   .then(html => {
+    if (html === void 0) return;
+
     // Get path to write to using path-extra:
     var writePath = path.replaceExt(path.join(conf.dist, filePath), '.html');
     // Output using fs-extra:
@@ -72,7 +76,7 @@ function middleware(data) {
   case '.md':
   case '.markdown':
     // Render markdown:
-    return marked(data._body)
+    return (conf.renderer || marked)(data._body)
     .then(res => {
       // Overwrite data._body:
       data._body = res;