library · inferred from evidence
EventEmitter
A core Node.js module for handling events, referenced here as part of the bug context.
- customerio-node: ERR_INVALID_ARG_TYPE: The listener argument must be of type Function on track()
Following the customerio-node docs for event tracking in Node.js, `new TrackClient(siteId, apiKey, { region: RegionUS })` then `await trackClient.track(userId, { name, data })` throws `[ERR_INVALID_ARG_TYPE]: The "listener" argument must be