cd firebase-ios-sdk/Firestore/Protos
./build-protos.sh
Verify diffs, tests and make PR
Get the protoc and the gRPC plugin. See
here. The
easiest way I found was to add
pod '!ProtoCompiler-gRPCPlugin' to a Podfile and do pod update.
After running the protoc, shell commands run to fix up the generated code: