in src/model/transaction/exploration/getNextDelimiterBlockKey.js [43:54]
let nextNonDescendantBlock: ?(
| ContentBlock
| BlockNodeRecord
| ContentBlockNode
) = blockMap.get(parent);
while (
nextNonDescendantBlock &&
!nextNonDescendantBlock.getNextSiblingKey()
) {
const parentKey = nextNonDescendantBlock.getParentKey();
nextNonDescendantBlock = parentKey ? blockMap.get(parentKey) : null;
}