040000 tree 63147f1132888a9aee67369b11c2ca7915a07a3f	deferred_loading
040000 tree 10f800e25cf9ef08576ad64bbec33a1dfd065fc4	protobuf_aware_treeshaker
040000 tree 2a8e2dcf09e12df6b5cdda28b601e2817dda53c5	type_flow
040000 tree e08060b46735ed192c79e39706581f596629bcdd	unreachable_code_elimination