Fix: Sometimes index === -1

[emilsgulbis]

Sometimes when mouse-overing container, i got vendors.app.js:8427 Uncaught TypeError: Cannot read property 'xPos' of undefined that is caused by -1 index

Explanation About What Code Achieves:

• To disable -1 index tooltip when hovering container

Screenshots/GIFs:

[coveralls]

Pull Request Test Coverage Report for Build 138

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 38.158%

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Totals
Change from base Build 136:	0.0%
Covered Lines:	29
Relevant Lines:	62

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💛 - Coveralls

[bennylut]

I am also having this issue - a workaround that I found was to disable pointer events in the relevant components:

.chart-container {
    pointer-events: none;

    .chart-draw-area {
        pointer-events: all;

        .y.axis {
            pointer-events: none;
        }

        .x.axis {
            pointer-events: all;
        }
    }
}

[willjosefi]

hi, is this merge didn't publish yet?
on npmjs i just can see the 1.3.0 version, which contains that bug :(
is there a way to use the updated version?