typescript TS2339: Property 'phoneType' does not exist on type 'Object'

I have an object declared as below:

export class Card {
   private _phones:Object[]

    get phones(): Object[]{
        if(this._phones === undefined)
            this._phones = []

        return this._phones
    }

    set phones(val:Object[]){
        this._phones = val
    }
}

somewhere in my html my code looks like

  <ng-container *ngFor="let phone of card.phones">
                  <ng-container *ngIf="phone.type === 'personal'">
                    <div fxLayout="row" fxFlex="100%">

The above code throws the compilation error:

Error: src/app/process-card/process-card.component.html:128:46 - error TS2339: Property 'type' does not exist on type 'Object'.

128                   <ng-container *ngIf="phone.type === 'personal'">

I do understand the issue that my card type is of object and phone.type cannot be determined. However, instead of creating an interface to bypass this is there any other workaround?

Try to avoid 'any' in your code. Couple of possible solutions is below:

interface PhoneInterface {
  type: string;
}

export class Card {
  private _phones: PhoneInterface[]
  ....
}

Or:

interface HasTypeProperty {
  type: string;
}

export class Card<T extends HasTypeProperty> {
  private _phones: T[];
      ....
}