Destructuring and assigning to an instance property

Question

I have the following:

const {title} = {title: "Menu"};

alert( title ); // Menu

Now, if I have the following:

interface IEntry {title: string}
class Entry { title = 'Xoom' }

entry:IEntry = new Entry()

Why doesn't the following work, and what is the correct form?

const {title: this.entry.title} = {title: "Menu"}

I was expecting the title property value to be assigned to this.entry.title.

Possible duplicate of [Is it possible to destructure onto an existing object?](https://stackoverflow.com/q/29620686/1048572) — Bergi, Sep 03 '21 at 11:16

score 1 · Accepted Answer · answered Sep 03 '21 at 11:13

1

You can't use a const declaration if you don't want to declare a new variable but destructure onto an existing object. The correct syntax would be

({title: this.entry.title} = {title: "Menu"});

answered Sep 03 '21 at 11:13

Bergi

1 Answers1