Promise.all() does not seem to work

This one causes the Puck to immediately crash and disconnect from BLE!

function go() {
  var users = [
    { name: "Bob" },
    { name: "Alice" },
    { name: "Eva" }
  ];

  console.log(users.map((u, i) => u.name));
}

It seems as follows:

u => u.name works perfectly
(u) => u.name isn't correctly passed its arguments (?)
(u, i) => u.name crashes the device