What is the best way to assign a TypeScript type as the object type within an array of objects sourced from a different interface?

I am working with a generated interface that looks like this:

export interface StaticPageLeftMenuV1 {
    id: string
    status: 'draft' | 'published'
    environments: ('dev' | 'staging' | 'production')[]
    created_by?: string | User
    last_modified_by?: string | User
    list?: {
        header?: string
        items?: {
            relation?: {
                value: string | StaticPageV1
                relationTo: 'static-page-v1'
            }
            custom_link_text?: string
            custom_link_url?: string
            custom_link_color?: string
            id?: string
        }[]
        id?: string
    }[]
}

I am wondering how I can declare the type of an item, as seen in obj.list[0].items[0]

To get the list easily, you can use:

type List = StaticPageLeftMenuV1['list']

This will give you an array, but I am struggling to figure out how to obtain the type of the object.

The following approach doesn't seem to work:

type Item = StaticPageLeftMenuV1['list'][0]['items'][0]

Answer №1

Here is my solution:

const Menu = Required<PageSideBarV1>['menu'][number]
const ItemContent = Required<Menu>['items'][number]

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