@lexical/markdown Fix strikethrough TextFormatTransformer order

packages/lexical-markdown/src/v2/MarkdownExport.ts

@@ -131,6 +131,7 @@ function exportTextFormat(
   let output = frozenString;
 
   const applied = new Set();
+  let appliedOrder = [];
 
   for (const transformer of textTransformers) {
     const format = transformer.format[0];
@@ -139,21 +140,31 @@ function exportTextFormat(
     if (hasFormat(node, format) && !applied.has(format)) {
       // Multiple tags might be used for the same format (*, _)
       applied.add(format);
+      // Add most recent textTransform to beginning of appliedOrder where
+      // we'll later iterate last-in-first-out when appending closing tags
+      appliedOrder = [transformer, ...appliedOrder];
+
       // Prevent adding opening tag is already opened by the previous sibling
       const previousNode = getTextSibling(node, true);
 
       if (!hasFormat(previousNode, format)) {
         output = tag + output;
       }
+    }
+  }
+
+  appliedOrder.forEach((transformer) => {
+    const format = transformer.format[0];
+    const tag = transformer.tag;
 
+    if (hasFormat(node, format)) {
       // Prevent adding closing tag if next sibling will do it
       const nextNode = getTextSibling(node, false);
-
       if (!hasFormat(nextNode, format)) {
         output += tag;
       }
     }
-  }
+  });
 
   // Replace trimmed version of textContent ensuring surrounding whitespace is not modified
   return textContent.replace(frozenString, output);