utilizing Typescript object within an array of objects

How can I optimize typing this nested array of objects?

const myItem: Items[] = [{
    id: 1,
    text: 'hello',
    items: [{
        id: 1,
        text: 'world'
    }]
}]

One way to approach this is by using interfaces:

interface Item {
    id: number
    text: string
}

interface Items {
    id: number // is it necessary to duplicate this?
    text: string // is it necessary to duplicate this?
    items: Item[]
}

However, I'd like to find a way to eliminate the duplication. It can get messy if the item has more properties.

Click here to experiment with a solution

Answer №1

This is precisely the purpose for which extends is designed:

interface Items extends Item {
    items: Item[]
}

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