console.log TypeError: Converting circular structure to JSON

[NickIliev]

Using tns-android@next ("version": "3.4.1-2018-02-22-01") and trying to print NativeScript View arguments (or other circular JSON objects) via console.log fails with

JS: ERROR Couldn't convert object to a JSON string: Uncaught TypeError: Converting circular structure to JSON
JS: ERROR CONTEXT Couldn't convert object to a JSON string: Uncaught TypeError: Converting circular structure to JSON

For example:

onStackLoaded(args: EventData) {
    console.log("onStackLoaded");
    console.log(args.object); // TypeError: Converting circular structure to JSON
    console.log("" + args.object); // OK prints StackLayout(9)

    console.log(JSON.stringify(args)); // JS: ERROR Couldn't convert object to a JSON string: Uncaught TypeError: Converting circular structure to JSON
    console.log("" + JSON.stringify(args)); // JS: ERROR CONTEXT Couldn't convert object to a JSON string: Uncaught TypeError: Converting circular structure to JSON
}

Steps to reproduce:

• use the above code or this demo app with next tns-android.

[petekanev]

I intentionally left the error, as console.log uses JSON.stringify internally for objects. I'll look into a more custom implementation for console.log(complex-object-with-CR).

As to why concatenating an empty string with args.object returns proper results while console.log() doesn't, I'll need to check that as well.

[petekanev]

This has since been addressed in the master branch of the runtime.