How to set a new value in a store of `Record<string, __>`?

[subtle summit]

In the following example:
https://playground.solidjs.com/anonymous/07b233f7-59cb-4202-a3ca-595a497912f8

setValue("abc", 3) on a blank object will trigger an error:

Uncaught TypeError: Cannot read properties of undefined (reading 'output')

Probably because the internal of the Store's path syntax function is trying to access the data.

Am I suppose to use the Immer inspired produce to add a new element to an object, or is there a syntax I don't know to use directly the setter from the store without using produce?

[quasi monolith]

You could do this if you don't want to use produce
https://playground.solidjs.com/anonymous/c8811330-19f7-4243-8c45-0f721abf194a

[subtle summit]

oh nice

which one is better ?
It seems for arrays suggestion are made in the doc (https://docs.solidjs.com/guides/complex-state-management#adding-to-an-array) but not for object

should I give produce a priority?

or rather, is one method more optimized than the other?

[quasi monolith]

It could be that the syntax isn't supported internally for object but it is for arrays

If you're going to do "complex" changes, I would just use produce

[onyx ledge]

How is it supposed to now what to set input to?

const cloneWith = (v: Values | undefined, output: number) =>
  v ? { input: v.input, output } : { input: 0, output };

function setValue(id: string, value: number) {
  setValues(id, (old) => cloneWith(old, value));
}

i.e. input isn't marked as optional.