emit('eventName') returns as emit(undefined)

[selfagency]

My emitter:

import Emittery from 'emittery'
import { logger } from './'

const eventBus: Emittery = new Emittery({
  debug: {
    name: 'eventBus',
    enabled: process.env.ENVIRONMENT !== 'production',
    logger: (type, debugName, eventName, eventData) => {
      logger.debug(`${debugName}: ${type} ${JSON.stringify(eventName)}`, eventData)
    }
  }
})

export default eventBus

My handler

eventBus.on('closeMailer', () => {
  logger.debug('Closing mailer')
  mailer.close()
})

My event

eventBus.emit('closeMailer')

The result:

[1630369974586] DEBUG (20026 on selfagency-m1mini.local): eventBus: subscribe "closeMailer"
[1630369974587] DEBUG (20026 on selfagency-m1mini.local): eventBus: emit undefined

When I try to use a Symbol instead of a string, as specified in the README, TypeScript says it's an invalid type for the parameter.

[selfagency]

Never mind I just saw the TypeScript instructions

[selfagency]

Wait no, even after adding the correct typings...

type Events = {
  closeMailer: undefined
}

const eventBus: Emittery<Events> = new Emittery<Events>({
  debug: {
    name: 'eventBus',
    enabled: process.env.ENVIRONMENT !== 'production',
    logger: (type, debugName, eventName, eventData) => {
      logger.debug(`${debugName}: ${type} ${JSON.stringify(eventName)}`, eventData)
    }
  }
})

I get:

[1630376409736] DEBUG (23571 on selfagency-m1mini.local): eventBus: subscribe "closeMailer"
[1630376409737] DEBUG (23571 on selfagency-m1mini.local): eventBus: emit undefined