[Home](./index.md) > [@snowplow/react-native-tracker](./react-native-tracker.md) > [ContextGenerator](./react-native-tracker.contextgenerator.md) ## ContextGenerator type A context generator is a user-supplied callback that is evaluated for each event to allow an additional context to be dynamically attached to the event Signature: ```typescript type ContextGenerator = (args?: ContextEvent) => SelfDescribingJson | SelfDescribingJson[] | undefined; ```