[BUG] Faulty presentation with ScatterPlot

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Issue Category

[ ] Enhancement
[x ] Bug
[ ] Question
[ ] Documentation gap/issue

Product Versions

Please specify what version of the library you are using......: [ 3.12 ]
Please specify what version(s) of PowerPoint you are targeting: [MS Office 2016 ]
Please specify what web browser you are using.................: [ Edge ]

Desired Behavior

Received faulty presentation with code below. The main feature is valAxisCrossesAt: 0,

Observed Behavior

Must be good file which can be opened in PP without repairing

Steps to Reproduce

My Code:

let arrDataScatter1 = [
            { name: "X-Axis", values: [0, 1, 2, 3, 4, 5] },
            { name: "Y-Value 1", values: [90, 80, 70, 85, 75, 92], labels: ["Jan", "Feb", "Mar", "Apr", "May", "Jun"] },
            { name: "Y-Value 2", values: [21, 32, 40, 49, 31, 29], labels: ["Jan", "Feb", "Mar", "Apr", "May", "Jun"] },
        ];

        let optsChartScat1 = {
            x: 0.5,
            y: 0.6,
            w: 4,
            h: 3,
            valAxisCrossesAt: 0,
            lineSize: 0,
            catAxisTitle: "Last 6 Months",
            catAxisTitleColor: "428442",
            catAxisTitleFontSize: 14,
            showCatAxisTitle: true,
            showLabel: true, // Must be set to true or labels will not be shown
            dataLabelPosition: "b", // Options: 't'|'b'|'l'|'r'|'ctr'
        };
        slide.addChart(pptx.charts.SCATTER, arrDataScatter1, optsChartScat1);

i think problem appears in function makeCatAxis(opts, axisId, valAxisId) in string:

    `strXml += " <c:".concat(typeof opts.valAxisCrossesAt === 'number' ? 'crossesAt' : 'crosses', " val=\"").concat(opts.valAxisCrossesAt || 'autoZero', "\"/>");`

The part "|| 'autoZero'" if opts.valAxisCrossesAt===0 at the end leads to faulty result file. I think this string can be refactored with

if (opts.valAxisCrossesAt!==undefined)
        strXml += " <c:".concat(typeof opts.valAxisCrossesAt === 'number' ? 'crossesAt' : 'crosses', " val=\"").concat(opts.valAxisCrossesAt,"\"/>");
    else
        strXml += " <c:crosses val=\"autoZero\"/>";

gitbrent / PptxGenJS