interface User{ fname: string, lname: string, mobNumb: number } function sendUserDetails<T>(userInput: T[] ): T { return userInput[0]; } const userOne = sendUserDetails<User>([{fname:"Donald",lname:"Trumph",mobNumb:7895474474}]); console.log(userOne.fname); console.log(userOne.lname); console.log(userOne.mobNumb);