How to use google.protobuf.Any type in typescript?

Question

1.the protocol buffer 3 file test.proto

option go_package = ".;apps";
package apps;

message ShardKvMap{
  map<string, google.protobuf.Any> data = 1;
}

2.i use grpc-web build .ts file

protoc -I=$DIR test.proto \
  --js_out=import_style=commonjs,binary:$OUT_DIR \
  --grpc-web_out=import_style=typescript,mode=grpcwebtext:$OUT_DIR

3.How to use google.protobuf.Any type in typescript?

Smoulder

Answer 1

I cannot help you with the build-in JS and TS support, but I can tell you how to do it with the protobuf-ts plugin (I am the author).

// this creates an empty new message
let msg = ShardKvMap.create();

// this packs the empty new message into an Any message, 
// and adds it to map under the key "foo":
msg.data["foo"] = Any.pack(msg, ShardKvMap);

As far as I know, protobuf-ts is the only library out there for JavaScript / TypeScript that fully supports google.protobuf.Any, including JSON format. Here is the section about Any support in the manual.

Cachou

What pros does your lib have? Why should we use it instead of github.com/protobufjs/protobuf.js and github.com/stephenh/ts-proto ? – Reata

I wrote protobuf-ts because ts-proto and protobuf.js's support for well-known-types, code size in a web application and conformance with the protobuf spec was not sufficient for me. – Cachou