StackLabels formatter in stacked waterfall chart

[kamil-musialowski]

Formatter should have correct properties values. At this moment, it is not possible to create a simple, conditional formatter like this.x === 3, since console logging the x values throws only 0.

Live demo with steps to reproduce

Open up the console and see this.x values.
https://jsfiddle.net/BlackLabel/p8u6be1a/

Product version

Highcharts + Highcharts More 10.2.1 (latest)

[karolkolodziej]

Thank you @kamil-musialowski for reporting that issue.

Internal note:
While creating the dummyStackItem 4th argument (which is x value), is set to zero.

highcharts/ts/Core/Axis/WaterfallAxis.ts

Lines 140 to 146 in 503f93d

	dummyStackItem = new StackItem(
	yAxis as any,
	yAxis.options.stackLabels as any,
	false,
	0,
	void 0
	);

It should be changed to something meaningful later inisde the objectEach where it can be extracted probably as key:

            // Render each waterfall stack total
            objectEach(waterfallStacks, function (type): void {
                objectEach(type, function (
                    stackItem: StacksItemObject,
                    key: string
                ): void {
                    dummyStackItem.total = stackItem.stackTotal;
                    dummyStackItem.x = +key;