function fetchUserDetails(username: string) { const user = users.find(user => user.username === username) if (!user) { throw new Error(`User with username ${username} not found`) } return user }
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}
constusers: User[] = [
{ username:"john_doe",role:"member" },
{ username:"jane_doe",role:"admin" },
{ username:"guest_user",role:"guest" }
];
function fetchUserDetails(username: string) {
const user = users.find(user => user.username === username)
if (!user) {
thrownew Error(`User with username ${username} not found`)