[Home](./index.md) > [@snowplow/node-tracker](./node-tracker.md) > [EmitterConfigurationBase](./node-tracker.emitterconfigurationbase.md) > [onRequestSuccess](./node-tracker.emitterconfigurationbase.onrequestsuccess.md) ## EmitterConfigurationBase.onRequestSuccess property A callback function to be executed whenever a request is successfully sent to the collector. In practice this means any request which returns a 2xx status code will trigger this callback. Signature: ```typescript onRequestSuccess?: (data: EventBatch, response: Response) => void; ```