Cannot update state property via $patch with empty object

[jasonrsadler]

Reproduction

NA

Steps to reproduce the bug

Using Vue 2, Update a state item object to an empty object in a Vue page:

const myStore = useMyStore()
mystore.$patch({
     selectedItem: {},
})

with store:

export const useMyStore = defineStore('myStore', {
    state: () => ({
        selectedItem: {},
.
.

Expected behavior

selectedItem becomes an empty object

Actual behavior

selectedItem maintains it previous values

Additional information

NA

[andrewevans]

Same behavior with "@pinia/nuxt": "^0.5.1", "nuxt": "^3.8.0", "vue": "^3.3.6",.

UPDATE: I switched to using the 2nd method https://pinia.vuejs.org/core-concepts/state.html#Mutating-the-state and this worked. Not sure why it acts differently but it works.

    mystore.$patch((state) => {
        state.selectedItem = {}
    })

[posva]

$patch() tries to recursively merge objects, therefore, an empty object doesn't change anything. Using the function syntax or directly changing the property is the correct way