Vue.js: What is the difference between shallowRef and ref with triggerRef?

1import { shallowRef, triggerRef } from "vue"
2
3const state = shallowRef({ count: 0 })
4
5// Does NOT trigger update
6state.value.count++
7
8// Triggers update
9state.value = { count: 1 }
10
11// Force update without changing value
12state.value.count++
13triggerRef(state)  // Forces re-render