Discussion on: This is your sign(al) to try TanStack Query & Angular

[Arnoud]

Great article Robin! To elaborate on why options is returned from a function, this also allows to preserve expressions. JavaScript - like most languages, is eagerly evaluated. The only practical way to preserve expressions is to wrap them in a function.

Which allows code like this:

postQuery = injectQuery(() => ({
    // ...
    enabled: this.postId() > 0
}))

Which means the query will be automatically enabled for you whenever the postId signal value is greater than 0. No need to separately define and pass a computed signal. This works for all the query properties.

If it becomes more complex than a simple comparison or maybe a ternary I would recommend a separate computed for code readability though.

[Robin Goetz]

Thanks so much! Is it cool if I add this as a paragraph in the article?

[Arnoud]

Yes of course!