.fetch()
Fetches the entries directly from the JSON file and returns the first one that matches the provided filter.
fetch(filter)
// Note: Users is a collection.
Users.create({ id: 1, name: '5antos' }); // { id: 1, name: '5antos' }
Users.fetch(u => u.id === 1); // { id: 1, name: '5antos' }
Users.fetch(u => u.name === 'Unnamed user'); // nullLast updated