Hands-On Functional Programming with TypeScript

Max

The max operator function can be used to find the biggest value in an observable. We must apply the max operator using the pipe method:

import { from } from "rxjs";import { max } from "rxjs/operators";const observable = from<number>([2, 30, 22, 5, 60, 1]);observable.pipe(max());const subscription = observable.subscribe(    (value) => console.log(value));subscription.unsubscribe();

The following marble diagram showcases the initial sequence and the result sequence after applying the max operator:

The result sequence contains only one value (the biggest value in the original sequence).