[Home](./index.md) > [@empathyco/x-components](./x-components.md) > [Emitter](./x-components.emitter.md) ## Emitter type Alias representing a [Subject](https://rxjs.dev/api/index/class/Subject) parametrized with the [SubjectPayload](./x-components.subjectpayload.md) of an event. **Signature:** ```typescript export type Emitter = Subject, SomeEventMetadata>>; ``` **References:** [SubjectPayload](./x-components.subjectpayload.md), [EventPayload](./x-components.eventpayload.md)