yaxis.label.formatter confusing runtime arguments

[it-xtech-dev]

Hi,

I using one of the exaples from the project repo: /apexcharts.js/samples/vanilla-js/line/basic-line.html
I have added custom label formatter for y axis:

...
        yaxis: {
          labels: {
            formatter(v, a, b, c, d) {
              console.log(v, a, b, c, d)
            },
          },
        },
...

When chart renders I can see formatter function evaluation result in console. It seems that some evaluations contain different function arguments than others. Can you exaplain this behaviour?

Best Regards,
It.Man