Passing object (interface) without writing keys

Issue

To put it simple, I have an interface A:

interface A { names: string[]; nr: number; }

And I can pass/create an A object so:

{ names: ['John'], nr: 11 }

However, how could I pass it without writing the keys, so like below:

{ ['John'], 11 }

Is it possible in typescript?

Solution

Seems like you are looking for a tuple type:

type A = [name: string[], nr: number];

const example: A = [['John'], 11];

Here's an example TS playground link.

Edit: keyed arrays aren't really a thing in TS/JS, but perhaps you could use a function to get the desired results?

interface A { names: string[]; nr: number; }

function makeA (names: A["names"], nr: A["nr"]): A {
    return { names, nr };
}

const a: A = makeA(['John'], 11);

console.log(a.name, a.nr);

Here's the TS playground link.

Answered By - Nick