From this older post: https://forum.qt.io/topic/122818/get-file-name-line-number-and-function-name-in-qml-javascript-how

I learned that this is possible in QML:

  const e = new Error()
  console.log(e.stack)

Sample output:

expression for myCustomPropertyName@file:///long/path/to/my/qml/VersionLabel.qml:28

The older forum thread has additional ideas for parsing the string if you prefer to see only a substring of what is in Error().stack

or here is how it looks when the QML file is compiled into the C++ app binary:

expression for myCustomPropertyName@qrc:/qml/VersionLabel.qml:28

Took a look but it seems that if you have a file that does this and is called by another QML file it'll stack the expression to that file as well. For example if I call it from a file called Page.qml but the error stack is called from Settings.qml I'd get

Debug: expression for onCompleted@file:///Settings.qml:14
expression for onCompleted@file:///Page.qml:103

So I'd guess I'd need to some how parse the first line of the stack

I learned that this is possible in QML:

  const e = new Error()
  console.log(e.stack)

Sample output:

expression for myCustomPropertyName@file:///long/path/to/my/qml/VersionLabel.qml:28

The older forum thread has additional ideas for parsing the string if you prefer to see only a substring of what is in Error().stack

or here is how it looks when the QML file is compiled into the C++ app binary:

expression for myCustomPropertyName@qrc:/qml/VersionLabel.qml:28