2 files changed, 12 insertions, 0 deletions
diff --git a/doc-tool/src/dotty/tools/dottydoc/core/DocstringPhase.scala b/doc-tool/src/dotty/tools/dottydoc/core/DocstringPhase.scala
index 55f2a05ba..3de8f68f7 100644
--- a/doc-tool/src/dotty/tools/dottydoc/core/DocstringPhase.scala
+++ b/doc-tool/src/dotty/tools/dottydoc/core/DocstringPhase.scala
@@ -63,4 +63,8 @@ class DocstringPhase extends DocMiniPhase with CommentParser with CommentCleaner
   override def transformVal(implicit ctx: Context) = { case ent: ValImpl =>
     ent.copy(comment = parsedComment(ent))
   }
+
+  override def transformTypeAlias(implicit ctx: Context) = { case ent: TypeAliasImpl =>
+    ent.copy(comment = parsedComment(ent))
+  }
 }
diff --git a/doc-tool/src/dotty/tools/dottydoc/core/TypeLinkingPhases.scala b/doc-tool/src/dotty/tools/dottydoc/core/TypeLinkingPhases.scala
index 825cdf9ad..5e0099f4b 100644
--- a/doc-tool/src/dotty/tools/dottydoc/core/TypeLinkingPhases.scala
+++ b/doc-tool/src/dotty/tools/dottydoc/core/TypeLinkingPhases.scala
@@ -26,6 +26,14 @@ class LinkReturnTypes extends DocMiniPhase with TypeLinker {
     val returnValue = linkReference(vl, vl.returnValue, ctx.docbase.packages)
     vl.copy(returnValue = returnValue)
   }
+
+  override def transformTypeAlias(implicit ctx: Context) = { case ta: TypeAliasImpl =>
+    ta.alias.map { alias =>
+      val linkedAlias = linkReference(ta, alias, ctx.docbase.packages)
+      ta.copy(alias = Some(linkedAlias))
+    }
+    .getOrElse(ta)
+  }
 }
 
 class LinkParamListTypes extends DocMiniPhase with TypeLinker {