fix: Add ability to convert between checklist and other types of list

shared/editor/commands/clearNodes.ts

@@ -0,0 +1,49 @@
+import { EditorState } from "prosemirror-state";
+import { liftTarget } from "prosemirror-transform";
+import { Dispatch } from "../types";
+
+const clearNodes = () => (state: EditorState, dispatch?: Dispatch) => {
+  const { tr } = state;
+  const { selection } = tr;
+  const { ranges } = selection;
+
+  if (!dispatch) {
+    return true;
+  }
+
+  ranges.forEach(({ $from, $to }) => {
+    state.doc.nodesBetween($from.pos, $to.pos, (node, pos) => {
+      if (node.type.isText) {
+        return;
+      }
+
+      const { doc, mapping } = tr;
+      const $mappedFrom = doc.resolve(mapping.map(pos));
+      const $mappedTo = doc.resolve(mapping.map(pos + node.nodeSize));
+      const nodeRange = $mappedFrom.blockRange($mappedTo);
+
+      if (!nodeRange) {
+        return;
+      }
+
+      const targetLiftDepth = liftTarget(nodeRange);
+
+      if (node.type.isTextblock) {
+        const { defaultType } = $mappedFrom.parent.contentMatchAt(
+          $mappedFrom.index()
+        );
+
+        tr.setNodeMarkup(nodeRange.start, defaultType);
+      }
+
+      if (targetLiftDepth || targetLiftDepth === 0) {
+        tr.lift(nodeRange, targetLiftDepth);
+      }
+    });
+  });
+
+  dispatch(tr);
+  return true;
+};
+
+export default clearNodes;