how to use the combinelatestall function from the rxjs library in javascript

The combineLatestAll function from the rxjs library is used to combine the latest values of multiple observables into a single observable that emits an array of the latest values from each of the input observables.

Here is an example of using combineLatestAll to combine the latest values of two observables:

index.tsx
import { of } from 'rxjs';
import { combineLatestAll } from 'rxjs/operators';

const source1$ = of('Hello');
const source2$ = of('World');

combineLatestAll([source1$, source2$]).subscribe(([value1, value2]) => {
  console.log(value1 + ' ' + value2);
});
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In this example, two of observables are created with the strings "Hello" and "World". These observables are then passed to the combineLatestAll function as an array. The subscribe method is called on the resulting observable, which logs the combined string "Hello World" to the console.

This is just a simple example, but combineLatestAll can be used to combine the latest values of any number of observables.