event

• event<T>(start: IEventNotifier<T>): IEvent<T>

• Returns a new IEvent instance, for handling event publishing in non-DOM related contexts

  As a minimal example:

  import {event} from "svelte-commons/lib/util/event";
  
  // Initialize our event publisher as a singleton
  const MY_EVENT = event((dispatch) => {
      // The callback we provided, will run whenever we get a first subscriber
      console.log("Got my first subscriber!");
  
      return () => {
          // And the callback returned, will run whenever we lose our last subscriber
          console.log("Lost my last subscriber!");
      };
  });
  
  MY_EVENT.subscribe((details) => {
      console.log(details);
  }); // Will log any dispatches to the event publisher
  
  MY_EVENT.dispatch({message: "Hello world!"}); // logs: `{"message": "Hello world!"}`

  Type parameters

  • T

  Parameters

  • start: IEventNotifier<T>

  Returns IEvent<T>