defineClass - best practice in how to use it?

[zanzara]

I don't understand at all what the proper use of defineClass is?
On the one site i think it's good to have the types of the table props. But is it then used if I do a db.table.add() ?
I mean as this example:

const aTableClass = Dexie.defineClass({
   name: String,
   status: [{
       prio: Number,
       code: String
   }]
})
db = new Dexie('DexieDB')
db.version(1).stores({newTable: "++id,name"});
db.newTable.mapToClass (aTableClass);
db.open();

const newEntry = new aTableClass()
newEntry.status.prio = 1
db.newTable.add(newEntry)

// would this fail below?
db.newTable.add({
  extra: "test"
  })
  
// and how about reading ? 
db.newTable.where("name")
    .startsWithIgnoreCase("v")
    .toArray(function (a) {
       // would a be a class instance here?
  });
  

Could i reach that way something as "a" required prop for table.add() ?
Can Dexie.defineClass() be used also for default values?

Thx in advance.