Typescript issue: Type '...' is not assignable to type '...'

Question

I'm using nestJS, I have 2 services, in the 1st service:

async getOrganizations (attributes: (keyof Organization)[]): Promise<Partial<Organization>[]> { 

    const organizations = await this.organizationRepository.find({select: attributes})
    
    return organizations; 
    //returns [{id:1, name: "x"},{id:2, name: "y"},..]

  }

in the 2nd service:

async getOrganizations(): Promise<CustomerResponseDto[]> {
        const attributes : (keyof Organization)[] = ['id', 'name'];

        let organizations = await this.1stService.getOrganizations(attributes);

        organizations = organizations.map((organization)=>{
            return {
                ...organization,
                type: 'Organization'
            }
        })
        
        return organizations;
    //returns [{id:1, name: "x", type: 'Organization'},{id:2, name: "y", type: 'Organization'},..]
    }

and the CustomerResponseDto:

export interface CustomerResponseDto {
    readonly id: number;
    readonly name: string;
    readonly type: string;
}

now I'm getting the following error:

Type 'Partial<Organization>[]' is not assignable to type 'CustomerResponseDto[]'.
  Property 'type' is missing in type 'Partial<Organization>' but required in type 'CustomerResponseDto'.
    22 |         })
    23 |
  > 24 |         return organizations;
       |         ^^^^^^^^^^^^^^^^^^^^^
    25 |     }

please advise

Answer 1

It works now, the issue was related to variable naming in 2nd service I changed:

organizations = organizations.map((organization)=>{
            return {
                ...organization,
                type: 'Organization'
            }

to be

const organizationsWithType = organizations.map(({ id, name })=>{
            return {
                id,
                name,
                type: 'Organization'
            }
        })