const { TopicClient, Configurations, CredentialProvider} = require('@gomomento/sdk');
const client =new TopicClient({
   credentialProvider: CredentialProvider.fromString({apiKey: TOKEN}),
   configuration: Configurations.Laptop.v1()
 });

const r = await client.subscribe('my-cache', 'foo', {
  onItem: (e) => {
    console.log(e.valueString())
  },
  onError: (err) => console.error(err)
});

await client.publish('my-cache', 'foo', 'bar');