Register proto2type extension number 1307#28129
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proto2type generates domain types, storage types, and converters from Protocol Buffer definitions. It extends FieldOptions and MessageOptions to annotate fields with code generation hints (document_id, server_timestamp, omitempty, etc.). Website: https://github.com/protocgen/proto2type
esrauchg
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Jun 22, 2026
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The edits in this PR look weird/broken, is it a bad merge?
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Extension Registration Request
Project: proto2type
Website: https://github.com/protocgen/proto2type
Requested Extension Number: 1307
What is proto2type?
proto2type is a protoc plugin that generates domain types, storage types (Firestore, MongoDB), and bidirectional converters from Protocol Buffer message definitions. It uses custom options on
FieldOptionsandMessageOptionsto annotate fields with code generation hints:document_id— marks a field as the document IDserver_timestamp— marks a field as server-managed timestampomitempty— controls JSON serialization behaviorskip— excludes fields/messages from generationname— overrides storage field namesinline— flattens nested messagesThe options proto is published on the Buf Schema Registry at
buf.build/protocgen/proto2type.Current Status
Currently using extension number 90100 (in the organizational-use range). Requesting formal registration as the project is open-source and published.