1import { Observable } from '../Observable';
2import { OperatorFunction } from '../types';
3/**
4 * Returns an Observable that emits whether or not every item of the source satisfies the condition specified.
5 *
6 * ## Example
7 * A simple example emitting true if all elements are less than 5, false otherwise
8 * ```ts
9 * import { of } from 'rxjs';
10 * import { every } from 'rxjs/operators';
11 *
12 *  of(1, 2, 3, 4, 5, 6).pipe(
13 *     every(x => x < 5),
14 * )
15 * .subscribe(x => console.log(x)); // -> false
16 * ```
17 *
18 * @param {function} predicate A function for determining if an item meets a specified condition.
19 * @param {any} [thisArg] Optional object to use for `this` in the callback.
20 * @return {Observable} An Observable of booleans that determines if all items of the source Observable meet the condition specified.
21 * @method every
22 * @owner Observable
23 */
24export declare function every<T>(predicate: (value: T, index: number, source: Observable<T>) => boolean, thisArg?: any): OperatorFunction<T, boolean>;
25