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Angular for Enterprise-Ready Web Applications - Second Edition
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There are two major strategies to debug and get information about what's happening inside an RxJS pipe:
Let's start with using the tap operator.
In Chapter 6, Forms, Observables, and Subjects, we introduced the RxJS tap operator as a way to direct the flow of user input from our search input's stream of change events, and eventually call our doSearch function. When an RxJS stream doesn't seem to be behaving as you'd expect, you can combine the tap operator and console.log to log each event's data, so you can see it over time. Since tap captures the data in the stream based on where it falls in the order of operations, once added to the stream, you can simply use VS Code's line movement keyboard shortcuts to move it around and test the flow...