Serialization interceptor

Ordinary Connect JSON calls need no serialization interceptor: the ConnectRPC transport already handles protobuf JSON encoding. Use the server's jsonOptions for wire JSON settings.

The optional interceptor instead converts the request message to JSON before next() and converts its response back to a protobuf message. The inner handler must deliberately accept and return protobuf JSON shapes.

import { createDefaultInterceptors } from '@connectum/interceptors';

const interceptors = createDefaultInterceptors({
  serializer: {
    alwaysEmitImplicit: true,
    ignoreUnknownFields: false,
  },
});

serializer: true opts into its default settings. Normal protobuf handlers over Connect or gRPC should leave it disabled. In a manual chain use createSerializerInterceptor(options); serialization is innermost in the default chain, closest to the handler.

skipGrpcServices, alwaysEmitImplicit and ignoreUnknownFields accept only booleans. Other types throw TypeError at construction; a string such as "no" is not interpreted by truthiness.

See SerializerOptions for exact settings and server configuration for transport-level JSON configuration.