encodeJsonStreaming method
Streaming equivalent of encodeJson (#lzdartstreamingjson): builds the
JSON via writeJson into a StringBuffer instead of jsonEncode(toWire()),
so the intermediate Map<String, Object> (and the inner List/Map
allocations for the batch variants) is never materialized.
Implementation
Uint8List encodeJsonStreaming() {
final buf = StringBuffer();
writeJson(buf);
return Uint8List.fromList(utf8.encode(buf.toString()));
}