feat: Default blocks refactor fixes

packages/core/src/api/blockManipulation/commands/insertBlocks/insertBlocks.ts

@@ -48,7 +48,7 @@ export function insertBlocks<
   // re-convert them into full `Block`s.
   const insertedBlocks = nodesToInsert.map((node) =>
     nodeToBlock(node, pmSchema),
-  );
+  ) as Block<BSchema, I, S>[];
 
   return insertedBlocks;
 }

packages/core/src/api/blockManipulation/commands/replaceBlocks/replaceBlocks.ts

@@ -102,7 +102,7 @@ export function removeAndInsertBlocks<
   // Converts the nodes created from `blocksToInsert` into full `Block`s.
   const insertedBlocks = nodesToInsert.map((node) =>
     nodeToBlock(node, pmSchema),
-  );
+  ) as Block<BSchema, I, S>[];
 
   return { insertedBlocks, removedBlocks };
-}
+}

packages/core/src/api/clipboard/toClipboard/copyExtension.ts

@@ -94,7 +94,7 @@ function fragmentToExternalHTML<
     );
     externalHTML = externalHTMLExporter.exportInlineContent(ic, {});
   } else {
-    const blocks = fragmentToBlocks(selectedFragment);
+    const blocks = fragmentToBlocks<BSchema, I, S>(selectedFragment);
     externalHTML = externalHTMLExporter.exportBlocks(blocks, {});
   }
   return externalHTML;

packages/core/src/api/exporters/html/util/serializeBlocksExternalHTML.ts

@@ -112,12 +112,19 @@ function serializeBlock<
   // we should change toExternalHTML so that this is not necessary
   const attrs = Array.from(bc.dom.attributes);
 
-  const ret = editor.blockImplementations[
-    block.type as any
-  ].implementation.toExternalHTML({ ...block, props } as any, editor as any);
+  const blockImplementation =
+    editor.blockImplementations[block.type as any].implementation;
+  const ret =
+    blockImplementation.toExternalHTML?.(
+      { ...block, props } as any,
+      editor as any,
+    ) || blockImplementation.render({ ...block, props } as any, editor as any);
 
   const elementFragment = doc.createDocumentFragment();
-  if (ret.dom.classList.contains("bn-block-content")) {
+  if (
+    ret.dom instanceof HTMLElement &&
+    ret.dom.classList.contains("bn-block-content")
+  ) {
     const blockContentDataAttributes = [
       ...attrs,
       ...Array.from(ret.dom.attributes),

packages/core/src/api/exporters/html/util/serializeBlocksInternalHTML.ts

@@ -74,7 +74,7 @@ function serializeBlock<
   }
 
   const impl = editor.blockImplementations[block.type as any].implementation;
-  const ret = impl.toInternalHTML({ ...block, props } as any, editor as any);
+  const ret = impl.render({ ...block, props } as any, editor as any);
 
   if (block.type === "numberedListItem") {
     // This is a workaround to make sure there's a list index set.
@@ -83,7 +83,9 @@ function serializeBlock<
     // - (a) this information is not available on the Blocks passed to the serializer. (we only have access to BlockNote Blocks)
     // - (b) the NumberedListIndexingPlugin might not even have run, because we can manually call blocksToFullHTML
     //       with blocks that are not part of the active document
-    ret.dom.setAttribute("data-index", listIndex.toString());
+    if (ret.dom instanceof HTMLElement) {
+      ret.dom.setAttribute("data-index", listIndex.toString());
+    }
   }
 
   if (ret.contentDOM && block.content) {