Reselect: createStructuredSelector - what is the point?

[epikhighs]

https://github.com/reactjs/reselect#createstructuredselectorinputselectors-selectorcreator--createselector

I'm curious what the intent of the method is. I thought reselect was supposed to help with performance optimizations, but not sure why one would create a reselect selector for a mapping that does no computations other than creating a new object. Are there performance gains from using memoization in such cases?

Thanks.

[MattSPalmer]

It's there purely for convenience. If you have selectors a, b, and c, createStructuredSelector means the difference between:

createSelector(a, b, c, (ax, bx, cx) => ({a: ax, b: bx: c: cx})

and:

createStructuredSelector({a, b, c})

[epikhighs]

I think the benefit is with composing selectors. It helps to reduce some boilerplate. It's not meant to be used by itself. Thanks.