Cannot order the date by desc on Lodash

Issue

I get the data like so:

 getLeads(): Observable<LeadModel[]> {
    return this.angularFireDatabase
      .list<LeadModel>(`groups/${this.groupId}/leads`)
      .valueChanges()
      .pipe(map((res) => orderBy(res, ['createdDate'], ['desc'])));
  }

.HTML

       <ion-col>
          <p>
            {{ lead.createdDate | date: 'MMM dd' }}
            <br />
            {{ lead.createdDate | date: 'h:mm a' }}
          </p>
        </ion-col>

I use Lodash orderBy here.

I use DayJS for date formating like so when I saved the data to Firebase

 createdDate: dayjs().format(),

But I cannot see the date order by desc here. Do you know why?

Solution

I have changed my model like so:

createdDate?: number;

Then used unix()

 createdDate: dayjs().unix(),

After that:

getLeads(): Observable<LeadModel[]> {
    return this.angularFireDatabase
      .list<LeadModel>(`groups/${this.groupId}/leads`)
      .valueChanges()
      .pipe(map((res) => orderBy(res, ['createdDate'], ['desc'])));
  }

All are working fine now.

Answered By - Sampath