How to get source code location from ES6 JavaScript class instance?

Question

I would like to generate some code from my object tree. In order to generate the required import statements, I need to find out the source code location for a given class from a class instance.

I am already able to get the expected name MyClass with

var name = instance.constructor.name;

but not the source code location

'/src/package/myClass.js'

=>How to do so?

For Java it would work like described here:

Find where java class is loaded from

If I inspect the constructor in Chrome developer tools with dir(constructor), I can see some property

[[FunctionLocation]]: myClass.js:3

and if I hover over it, I can see the wanted path. How can I get that property programmatically?

Edit

Just found that [[FunctionLocation]] is not accessible:

Access function location programmatically

Answer 1

A possible work around seems to be to call

determineImportLocation(){
    var stack = new Error().stack;
    var lastLine = stack.split('\n').pop();
    var startIndex = lastLine.indexOf('/src/');
    var endIndex = lastLine.indexOf('.js:') + 3;
    return '.' + lastLine.substring(startIndex, endIndex);
}

in the constructor of MyClass and store it for later access:

constructor(name){
    this.name = name;
    if(!this.constructor.importLocation){
        this.constructor.importLocation = this.determineImportLocation();
    }                       
}

That would however require to modify all classes that I would like to import. Please let me know if there is a solution that does not require to modify the class itself.