imgOffset.left is Undefined and Causes Application Error

[devanflaherty]

Problem

We currently use this plugin for some before/after scenarios and generally has been great.

There is one issue though where if a user attempts to move the slider before the second image is loaded in (generally the image on the right) then an error is thrown and causes my application to break.

Seems to be located here:

./node_modules/vue-twentytwenty/dist/vue-twentytwenty.common.js in apply at line 327:89


moveSlide(event) {
      if (this.sliding) {
        var x = (event.touches ? event.touches[0].pageX : event.pageX) - this.imgOffset.left;
        x = x < 0 ? 0 : x > this.w ? this.w : x;
        return this.slideOffset = x / this.w;
      }

Suggestion

I think a simple check against this.imgOffset first would resolve this error from occurring.

Thanks for your time.