Runtime features - Amazon AppSync Events
Services or capabilities described in Amazon Web Services documentation might vary by Region. To see the differences applicable to the China Regions, see Getting Started with Amazon Web Services in China (PDF).

Runtime features

The APPSYNC_JS runtime environment provides features and utilities to help you work with data, and write functions and Amazon AppSync Event API handlers. The topics in this section describe the language features that are supported for Amazon AppSync Event APIs.