graphql-toe
GraphQL Throw-On-Error - incorporate error handling back into the reading of your data, so you can handle errors in the most natural way.
p-event
Promisify an event by waiting for it to be emitted
emittery
Simple and modern async event emitter
graphql-sock
GraphQL Semantic Output Conversion Kit - converts a cutting edge SDL file that supports semantic nullability into a more traditional SDL file legacy tools can support.
eventemitter2
A feature-rich Node.js event emitter implementation with namespaces, wildcards, TTL, async listeners and browser/worker support.