[JuanPosadas]

I'm probably on the mild side of abusing it, I've never seen another developer on my team use it, but I also include self-describing variables for the values. If the reducer function itself is non-trivial, I've give it a name so the final product may look like:

    const idNameMap = itemList.reduce(toIdNameMap)

It should be intuitive that itemList is a list of objects familiar to the context of the code, and the result will be like:

    [{"id1":"Billy"}, etc.

[masklinn]

It’s really not clear to me what the transformation is, but from the naming and result it mostly looks like it’s an abuse of reduce and should be a map, possibly feeding into an Object / Map constructor / factory?

[yakshaving_jgt]

> It should be intuitive that itemList is a list of objects

…But how?!

I can't see how anyone could build an intuition for this opaque line and the example of its apparent result. It's confusing enough that `idNameMap` actually refers to a list (or array), and not a map (or object).