How should I judge if vue.js gets {_ _ ob__: Observer}?

the property value I set to the object is empty, but what I get is {_ _ ob__: Observer}.
I have reset the property value to null for my object, but because it does not match the type of that property, I cannot set it to null. If I get {_ _ ob__: Observer}, how can I judge? Solve it! Thank you!

May.23,2022

Brother, did you open the printed object at the console?
{_ ob__: Observer}
mt: ""
_ _ ob__: Observer {value: { }, dep: Dep, vmCount: 0}
get mt: reactiveSetter (newVal)
_ _ proto__: Object


that day I changed the literal type of object to any and solved the problem
interface obj {
parent:any;
}

.
MySQL Query : SELECT * FROM `codeshelper`.`v9_news` WHERE status=99 AND catid='6' ORDER BY rand() LIMIT 5
MySQL Error : Disk full (/tmp/#sql-temptable-64f5-1b3f3f2-2bbf4.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1b3f3f2-2bbf4.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
Need Help?