import { Observable } from 'rxjs';
import type { ObservifyInput } from '../types/ObservifyInput';
/**
 * Turns the input into an observable if it isn't one already
 * @since 1.4
 * @kind Utility
 * @param inp The input
 * @example
 * import {of} from 'rxjs';
 * import {observify} from '@aloreljs/rxutils';
 *
 * observify(of(1)).subscribe(); // outputs 1
 * observify(Promise.resolve(2)).subscribe(); // outputs 2
 * observify(3).subscribe(); // outputs 3
 */
export declare function observify<T>(inp: ObservifyInput<T>): Observable<T>;