var calculator = new Numworks();

navigator.usb.addEventListener("disconnect", function(e) {
  calculator.onUnexpectedDisconnect(e, function() {
    // Do stuff when the calculator gets disconnected.
  });
});

calculator.autoConnect(function() {
  // Do stuff...
});

var calculator = new Numworks();

navigator.usb.addEventListener("disconnect", function(e) {
  calculator.onUnexpectedDisconnect(e, function() {
    // Do stuff when the calculator gets disconnected.
  });
});

calculator.detect(function() {
  // Do stuff...
}, function(error) {
  // Handle errors.
});

var calculator = new Numworks();

navigator.usb.addEventListener("disconnect", function(e) {
  calculator.onUnexpectedDisconnect(e, function() {
    calculator.autoConnect(connectedHandler);

    // Do stuff when the calculator gets disconnected.
  });
});

calculator.autoConnect(connectedHandler);

calculator.autoConnect();

function someEventHandler(e) {
  calculator.detect(connectedHandler, function(error) {
    // Handle errors.
  });
}

function connectedHandler() {
  calculator.stopAutoConnect(); // It's connected, so autoConnect should stop.
  // Do stuff when the claculator gets connected.
}

{
  // Whether or not the software is valid, based on a magic number. If false, the rest of the structure is absent.
  "magik": true,
  // Whether or not the software is considered as old (< Epsilon 11).
  // This is primarely used by the parser itself to know where to read data.
  "oldplatform": false,
  // This part of the data is related to the Omega fork of Epsilon.
  "omega": {
    // Whether or not Omega is installed on the Numworks. If false, the rest of the Omega structure is absent
    "installed": true
    // The version of Omega detected on the calculator.
    "version": "1.19.2",
    // Username written in the system. "" if none.
    "user": "M4x1m3"
  },
  "upsilon": {
    // Whether or not Upsilon is installed on the Numworks. If false, the rest of the Upsilon structure is absent
    "installed": true
    // The version of Upsilon detected on the calculator.
    "version": "1.0.0",
    // The type of Upsilon : if it is a derivate or not
    "osType": "2020704889",
    // A more simple way to get if it is a derivate or not, it is based on the os type
    "official": true
  },
  // The version of Epsilon installed on the calculator.
  "version": "13.0.0",
  // The system's commit ID
  "commit": " 651abf9",
  "storage": {
    // Address of the script storage
    "address": 165467,
    // Size of the script storage
    "size": 65535
  }
}

var storage = await calculator.backupStorage();
storage.records.push({"name": "test", "type": "py", "autoImport": true, position: 0, "code": "print('Hello World!')\n"});
await calculator.installStorage(storage, function() {
  // Do stuff after writing to the storage is done
});