in src/model/transaction/removeRangeFromContentState.js [59:67]
let blockNode: ?(BlockNodeRecord | ContentBlock | ContentBlockNode) =
blockMap.get(blockKey);
while (blockNode && blockNode.getParentKey()) {
const parentKey = blockNode.getParentKey();
if (parentKey) {
parents.push(parentKey);
}
blockNode = parentKey ? blockMap.get(parentKey) : null;
}