What are custom operators in RxJS?

What are custom operators in RxJS?

Custom operators in RxJS are functions that allow you to create your own operators to manipulate streams of data.

Can you give me an example of a custom operator?

Sure! A simple custom operator could be one that filters out even numbers from a stream of integers.

How do I implement that custom operator?

You can implement it using the pipe method and the filter operator from RxJS. Here's a basic example: const filterEvens = () => source => source.pipe(filter(num => num % 2 !== 0));

How can I test my custom operator?

You can test it by creating a mock observable and subscribing to it to see if it emits the expected values.