import { MonoTypeOperatorFunction } from 'rxjs';
/**
 * An RxJs operator which takes an Angular class instance as a parameter. When the component is destroyed, the stream will be
 * unsubscribed from.
 *
 * <b>Important:</b> Make sure you have either {@link Destroyable @Destroyable} decorating your class like so:
 * <pre><code>
 * @Destroyable
 * @Component({
 *   ...
 * })
 * export class ExampleComponent {}
 * </code></pre>
 *
 * or that your class implements OnDestroy like so:
 * <pre><code>
 * @Component({
 *   ...
 * })
 * export class ExampleComponent implements OnDestroy {
 *    ngOnDestroy () {}
 * }
 * </code></pre>
 *
 * @example
 * <pre><code>
 * ngOnInit() {
 *   this.randomObservable
 *     .pipe(takeUntilDestroy(this))
 *     .subscribe((val) => console.log(val))
 * }
 * </code></pre>
 * @param {Object} target (normally `this`)
 * @returns {Observable<T>}
 */
export declare const takeUntilDestroy: <T>(target: any) => MonoTypeOperatorFunction<T>;