import type { OperatorFunction } from 'rxjs';
/**
 * Shorthand for <code>source.pipe(filter(v => !v), take(num))</code>
 * @since 1.0.0
 * @kind Operator
 * @param numToTake Number of emissions to take. Passed on to rxjs' take() operator
 * @example
 * import {of} from 'rxjs';
 * import {takeFalsy} from '@aloreljs/rxutils/operators';
 *
 * of(false, true, 1, 0, 5, undefined, 'foo', null)
 *   .pipe(takeFalsy(3))
 *   .subscribe();
 * // outputs false, 0, undefined
 */
export declare function takeFalsy<I, O extends I = I>(numToTake: number): OperatorFunction<I, O>;