import { type Observable } from '../core/index.mjs';
/**
 * Creates an event emitter for void events (events without payload).
 * Returns a tuple of [observable, emitter function].
 *
 * @returns A tuple containing the observable and the emitter function
 *
 * @example
 * ```ts
 * const [click$, emitClick] = createEventEmitter();
 *
 * const mut_clickCount = { value: 0 };
 *
 * click$.subscribe(() => {
 *   mut_clickCount.value += 1;
 * });
 *
 * emitClick(); // logs: Clicked!
 *
 * assert.deepStrictEqual(mut_clickCount.value, 1);
 *
 * emitClick();
 *
 * emitClick();
 *
 * assert.deepStrictEqual(mut_clickCount.value, 3);
 * ```
 */
export declare const createEventEmitter: () => readonly [Observable<void>, () => void];
/**
 * Creates an event emitter with typed payload.
 * Returns a tuple of [observable, emitter function].
 *
 * @template A - The type of the event payload
 * @returns A tuple containing the observable and the emitter function
 *
 * @example
 * ```ts
 * const [message$, emitMessage] = createValueEmitter<string>();
 *
 * const messageHistory: string[] = [];
 *
 * message$.subscribe((msg) => {
 *   messageHistory.push(msg);
 * });
 *
 * emitMessage('Hello'); // logs: Hello
 *
 * assert.deepStrictEqual(messageHistory, ['Hello']);
 *
 * emitMessage('World');
 *
 * assert.deepStrictEqual(messageHistory, ['Hello', 'World']);
 * ```
 */
export declare const createValueEmitter: <A>() => readonly [Observable<A>, (value: A) => void];
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