Property '{}' is not defined in type - Angular version 9.1.1

Currently, I am working with Angular CLI version 9.1.1 and I am attempting to update certain data without updating all of it.

form: UserInfo = {adresse : {}};

UserInfo.interface

export interface UserInfo {
    id_user: string;
    username: string;
    email: string;
    nom: string;
    prenom: string;
    telephone: number;
    password: string;
    specialite: string;
    adresse?: Address;
   
}

The following error message has been displayed:

 Type '{}' is missing the following properties from type 'Address': id_adresse, adresse, code_postal, ville, and 2 more.ts(2740)
    user-info.ts(12, 5): The expected type comes from property 'adresse' which is declared here on type 'UserInfo'

Although the code is functional, the project fails to start when I restart the app. Looking for assistance in resolving this issue. Thank you.

javascriptangulartypescriptforms

Answer №1

To make the properties optional, you can use the ? operator in TypeScript. This tells the compiler not to expect values when instantiating the interface.

export interface UserProfile {
    id?: string;
    username?: string;
    email?: string;
    first_name?: string;
    last_name?: string;
    phone?: number;
    password?: string;
    interests?: string;
    address?: UserAddress;
   
}

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