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@note Vue array
// Vue.set
Vue.set(vm.items, indexOfItem, newValue)
vm.$set(vm.items, indexOfItem, newValue)
// Array.prototype.splice
vm.items.splice(indexOfItem, 1, newValue)
// Array.prototype.splice
vm.items.splice(newLength)
Vue no longer extends Object.prototype with $set and $delete methods. This has been causing issues with libraries that rely on these properties in certain condition checks (e.g. minimongo in Meteor). Instead of object.$set(key, value) and object.$delete(key), use the new global methods Vue.set(object, key, value) and Vue.delete(object, key).
