v1.7.0

What's Changed

This release adds support for extensions, a Protobuf language feature that allows to extend a message with an additional field.

For example:

syntax = "proto2";

message User {
  extensions 100 to 200;
}

extend User {
  optional uint32 age = 100;
}

For the extension age, we generate a new export const age: Extension<User, number>. You can set the extension field with the function setExtension:

import { setExtension } from "@bufbuild/protobuf";
import { User, age } from "./example_pb.js";

const user = new User();
setExtension(user, age, 77);

To learn more about the details, see the API documentation.

For plugin authors: Since extensions provide a better way to access custom options in a plugin, we are deprecating the findCustom*Option functions from @bufbuild/protoplugin/ecmascript. We recommend to switch to extensions for better type safety and flexibility, see the PR for details.

All changes

• Support extensions by @timostamm in #666
• Deprecate findCustom*Option functions in favor of extensions by @timostamm in #669
• Document extensions by @timostamm in #672
• Support experimental editions in @bufbuild/protoplugin by @timostamm in #655
• Improve errors for unsupported editions in createDescriptorSet by @timostamm in #654

Full Changelog: v1.6.0...v1.7.0