It is just an initial value.

So ref is just a state variable with an initial value of 10? How do you mutate the variable/change the state?

No, $ref(10) will return a reactive object. And 10 will be the initial value of that object.

You use the object the same way you use a js variable.

let st = $ref(10)

st = st + 1 // update it and use it like if it was just "10"

But now, st is reactive.

Thank you for the explanation... I will have to learn a lot of basics, it looks like :)