Better

public/js/thread.js

@@ -48,8 +48,7 @@ window.edit_message = async function (id) {
     editing = new SimpleMDE({
         element: cnt,
         spellChecker: false,
-        height: "200px",
-        previewRender: t => converter.makeHtml(t)
+        height: "200px"
     });
     editing.value(content.rawText)
 }

views/thread.ejs

@@ -127,9 +127,7 @@
         delay: 1000,
       },
       element: textarea,
-      spellChecker: false,
-      previewRender: t=> converter.makeHtml(t)
-      
+      spellChecker: false      
     });
 
     import request from "../../js/request.js";