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I have a 2-field object like this

{ id: number, name: string }

...and want to remove the name item.

How do I accomplish that in TypeScript? I've tried using filter, delete etc but all I get is 

TS2339: Property 'filter' does not exist on type '{}'.

I think this relates to this question What is "type '{}'"? but I need help to figure it out.

langkilde
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1 Answers1

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Consider : 

let x : { id: number, name?: string } = {id: 1, name: 'foo'};

You can simply use delete:

delete x.name;
console.log(x); // {id: 1}
basarat
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  • Thanks, that works! This lead me to a new question: https://stackoverflow.com/questions/45230325/how-to-type-redux-state-in-typescript-to-create-new-state-without-item – langkilde Jul 21 '17 at 06:17