every.d.ts 942 B

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