如果检查和重新分配，如何速记所有这些？

Question

I have a variable that I want to set to something based on whether other variables are defined or not + 1 boolean flag. I was wondering how can it be shortened

Answer 1

For a one-liner with arguably limited readability, you can put a ternary in the mix:

let test = params?.articleId ?? (isFromActivity ? 
    controller?.activityConfig?.slug ?? name.toLowerCase() : name.toLowerCase())