close(): void

import grpc from 'pts/grpc';

// Create a grpc Client.
const client = new grpc.Client();

// Load the addsvc.proto file from the root directory of the protocol file.
client.load([], 'addsvc.proto');

export default () => {
  // Establish a connection.
  client.connect('grpcb.in:9000', { insecure: true });

  // Call the method.
  const rsp = client.invoke('addsvc.Add/Sum', {
    a: 1,
    b: 2,
  });
  console.log(rsp.data.v); // 3

  // Close the connection.
  client.close();
};