-spec decode_entity_deltas(binary()) -> {non_neg_integer(), [map()]}.

-spec decode_terrain_chunk(binary()) -> {{integer(), integer()}, binary()}.

-spec encode_entity_deltas(non_neg_integer(), [map()]) -> binary().

-spec encode_terrain_chunk({integer(), integer()}, binary()) -> binary().

-spec is_binary_mode(map()) -> boolean().