Angular is showing an error indicating that the property "name" is not found on an empty object

After thorough checking, I have confirmed that the property does exist with the correct key. However, it is returning an error message stating name is not a property of {}. I attempted to assign this object to an interface along with its properties but encountered another issue where it wouldn't allow me to do so with an empty object {}. What could possibly be causing this problem?

The following code snippet is the one causing the issue:

this.companiesArray[0].employees[0].name
which triggers the error name is not a property of {}.

Here is an example of the data structure I am working with, represented as an array of objects (Companies)

[
{
"employees": [
  {
    "name": "Amy",
    "gender": "female",
    "level": "2"
  },
  {
    "name": "Chris",
    "gender": "male",
    "level": "4"
  }
  ],
"company": "XYZ",
"tower": "Tower 2"
 },
 {
"employees": [
  {
    "name": "Ben",
    "gender": "male",
    "level": "1"
  },
  {
    "name": "Sarah",
    "gender": "female",
    "level": "1"
  }
  ],
"company": "ABC",
"tower": "Tower 3"
 }
 ]

Below is the Angular code and the Company Interface being utilized

 companiesArray: Company[]
  ngOnInit() {
    this.companyService.obsCompanies.subscribe(companies => {
      this.companiesArray = companies;
      console.log(this.companiesArray[0].employees[0].name);// for testing
    });
...
  }

export interface Company {
    employees: {}[],
    company: string,
    tower: string
}

Answer №1

Develop an interface for Staff

export interface Staff {
    name: string;
    gender: string;
    position: string;
}

Update Corporation to

export interface Corporation {
    staffMembers: Staff[],
    corporationName: string,
    headquartersLocation: string
}

Answer №2

When you encounter a compiler error while calling a function with a generic signature, it means that you have not specified a type for the function call and the compiler is unable to infer the type, so it defaults to type {}.

To resolve this issue, make sure to define the type in the function call so that the compiler can determine the correct type. For example, use something like yourService.get<YourType>() instead of yourService.get()

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