import { MonoTypeOperatorFunction } from '../interfaces'; /** * The Max operator operates on an Observable that emits numbers (or items that can be compared with a provided function), * and when source Observable completes it emits a single item: the item with the largest value. * * * * @example Get the maximal value of a series of numbers * Rx.Observable.of(5, 4, 7, 2, 8) * .max() * .subscribe(x => console.log(x)); // -> 8 * * @example Use a comparer function to get the maximal item * interface Person { * age: number, * name: string * } * Observable.of({age: 7, name: 'Foo'}, * {age: 5, name: 'Bar'}, * {age: 9, name: 'Beer'}) * .max((a: Person, b: Person) => a.age < b.age ? -1 : 1) * .subscribe((x: Person) => console.log(x.name)); // -> 'Beer' * } * * @see {@link min} * * @param {Function} [comparer] - Optional comparer function that it will use instead of its default to compare the * value of two items. * @return {Observable} An Observable that emits item with the largest value. * @method max * @owner Observable */ export declare function max(comparer?: (x: T, y: T) => number): MonoTypeOperatorFunction;