Make all properties within a Typescript interface optional

Question

I have an interface in my application:

interface Asset {
  id: string;
  internal_id: string;
  usage: number;
}

that is part of a post int

Answer 1

In addition to David Sherret answer just a few lines from my side how it can be implemented directly without Partial type for better understanding of the subject.

interface IAsset {
  id: string;
  internal_id: string;
  usage: number;
}

interface IPost {
  asset: IAsset;
}

interface IPostDraft {
  asset: { [K in keyof IAsset]?: IAsset[K] };
}

const postDraft: IPostDraft = {
  asset: {
    usage: 123
  }
};