Hi,

For safety use, it's better to have null check for all variables which are used in this function.

if (!_sessionPriv.$clientAlarmList) {
    return;
}

↓

if (!_sessionPriv.$clientAlarmList
     || !_sessionPriv.$monitoredItemForAlarmList
     || !_sessionPriv.$subscriptionforAlarmList ) {
    return;
}

https://github.com/node-opcua/node-opcua/blob/master/pack

The majority of the windows with tabs have a function for left aligning the none disabled tabs. There should be one function that does this rather than the variety of different ones that we have at the moment.

The function will need to know the first and last tab but that should be about it. The build vehicle window likely is a bit special and consideration on if it can use the general function

When adding multiple rpc target classes, if multiple targets contain the same\similar method, the method in first target added is used (as documented). But I miss an option to disallow duplicates, as this is (in my case) always an error. Alternatives:
-Preferably a setting on JsonRpc itself that produce error when AddLocalRpcTarget is called
-A setting on JsonRpc itself that produce error during

The documentation can be added to: https://napalm-logs.com/en/latest/syslog/index.html - help would be greatly appreciated.