Extracting Object Properties from Arrays in TypeScript

Code Snippet:

interface Human {
  name: string;
  age: number;
}

interface Pet {
  name: string;
  type: string;
}

If I have an array of Human, how can I get an array of Pet's type.

For instance:

Is there a built-in way to achieve this in typescript?

Answer №1

What about this?

const newNumbersArray: Array<number> = 
    originalNumbers.reduce((acc, cur) => acc.concat([cur.property2.property2]), []);

Answer №2

To expand the object, utilize the following approach:

interface ObjectModel {
  name: string;
  values: Array<any>;
}

interface UpdatedObjectModel {
  name: string;
  values: Array<number>;;
}

interface ExtendedObjectModel extends UpdatedObjectModel {
    name: string;
    flag: boolean;
}

It's important to note that you cannot convert Property2 as an Array and then try to change it to a number.

Take a look at typescript interface documentation for more information.

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