export interface Book { isbn : number ; title : string ; author : string ; } export const someBooks = [ { isbn : 9780679783268 , title : "Pride and Prejudic" , author : "Jane Austen" , } , { isbn : 9780743273565 , title : "The Great Gatsby" , author : "Francis Scott Fitzgerald" , } , { isbn : 9780684830490 , title : "The Old Man and the Sea" , author : "Ernest Hemingway" , } , ] ;