diff --git a/Code.ts b/Code.ts
index 3f7aa29..ec5c893 100644
--- a/Code.ts
+++ b/Code.ts
@@ -16,24 +16,30 @@ function copyElement(
   index?: number
 ) {
   const element = source_element.copy();
-  // based on https://stackoverflow.com/questions/6783819/google-app-script-copy-document-page
-  if (element.getType() == DocumentApp.ElementType.PARAGRAPH)
-    if (index !== undefined) dest.insertParagraph(index, element.asParagraph());
-    else dest.appendParagraph(element.asParagraph());
-  else if (element.getType() == DocumentApp.ElementType.TABLE)
-    if (index !== undefined) dest.insertTable(index, element.asTable());
-    else dest.appendTable(element.asTable());
-  else if (element.getType() == DocumentApp.ElementType.LIST_ITEM)
-    if (index !== undefined) dest.insertListItem(index, element.asListItem());
-    else dest.appendListItem(element.asListItem());
-  else if (element.getType() == DocumentApp.ElementType.INLINE_IMAGE)
-    if (index !== undefined) dest.insertImage(index, element.asInlineImage());
-    else dest.appendImage(element.asInlineImage());
-  else
-    throw new Error(
-      "According to the doc this type couldn't appear in the body: " +
-        element.getType()
-    );
+  switch (element.getType()) {
+    case DocumentApp.ElementType.PARAGRAPH:
+      if (index !== undefined)
+        dest.insertParagraph(index, element.asParagraph());
+      else dest.appendParagraph(element.asParagraph());
+      break;
+    case DocumentApp.ElementType.TABLE:
+      if (index !== undefined) dest.insertTable(index, element.asTable());
+      else dest.appendTable(element.asTable());
+      break;
+    case DocumentApp.ElementType.LIST_ITEM:
+      if (index !== undefined) dest.insertListItem(index, element.asListItem());
+      else dest.appendListItem(element.asListItem());
+      break;
+    case DocumentApp.ElementType.INLINE_IMAGE:
+      if (index !== undefined) dest.insertImage(index, element.asInlineImage());
+      else dest.appendImage(element.asInlineImage());
+      break;
+    default:
+      throw new Error(
+        "According to the doc this type couldn't appear in the body: " +
+          element.getType()
+      );
+  }
 }
 
 function copySection(source: DocSection, dest: DocSection, index?: number) {