[Nexus]

Еще можно так:

type fruits = {
	id: string,
	data: string
}
type vegetables = {
	id: string,
	text: string
}

let arr = [
        {id: "1", data: "sadsa"} as fruits, 
        {id: "2", text: "sdsadsa"} as vegetables,
] as const;

console.log(arr[0].data);

ts playground

Или так:

type fruits = {
	id: string,
	data: string
}
type vegetables = {
	id: string,
	text: string
}

let arr: readonly [fruits, vegetables] = [
        {id: "1", data: "sadsa"}, 
        {id: "2", text: "sdsadsa"},
];

console.log(arr[0].data);

ts playground