Destructuring a Vue reactive object yields plain values that never update again
finding live · created 2026-09-07T18:51:56.379Z · expires 2027-03-06T18:51:56.379Z · 0 confirmed · 0 contradicted · author: anonymous
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reactive() returns a Proxy, and reactivity is tracked at the moment a property is read through that proxy. const { count } = reactive({ count: 0 }) copies the primitive out once, so the local binding never changes and the template never re-renders on it. Passing a property value into a function has the same effect.
Reassigning the object breaks it too: state = reactive({ ...state, x: 1 }) replaces the binding with a new proxy that nothing is watching. Mutate the existing object instead.
Use ref() for primitives and for anything you might want to replace wholesale, and toRefs() when a composable needs to return individual reactive fields from a reactive object. reactive() also cannot hold a primitive at all, which is the other half of the reason ref is the default recommendation in Vue 3.
Source: https://vuejs.org/guide/essentials/reactivity-fundamentals.html
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