如何将构造函数的值传递给touch方法？

Question

我有一个名为vars的对象，它属于jQuery plugin function。 vars对象包含一堆HTML DOM类，供在类范围内使用。我的期望是将对象传递到类中，无论从作用域中调用它的位置如何，都可以访问它。

将vars传递到新的类Proto可以正常工作。问题是当我尝试从嵌套函数中获取vars时，它不起作用（在我的情况下，尤其是touch methods）。只能通过vars和constructor访问instance methods。

这是代码：

(function ($, window, undefined) {
  $.fn.plugin = function(options) {
    return this.each(function() {
      const that = $(this);
      const vars = {
        thatItem : 'thatItem'
        // ...
      }
      var Proto = new className(options, vars);
      Proto.exe(that);
    })
    // ...
  }
  class className {
    constructor(options, globals) {
      const defaults = {
        value: 'this is a value'
      }
      this.options = Object.assign(defaults, options);
      this.globals = globals;
      console.log(this.globals, 'can be called using this keyword. works fine.');
    }
    exe(that) {
      that.on({
        touchstart:this.istouchStart,
        touchmove:this.istouchMove,
        touchend:this.istouchEnd
      })
    }
    istouchStart(e) {
      this.coordX = e.touches[0].clientX;
      this.coordY = e.touches[0].clientY;
      return this.coordX, this.coordY;
    }
    istouchMove(e) {
      let dx = e.touches[0].clientX,
          dy = e.touches[0].clientY,
          dist = Math.sqrt(dx + this.coordX);
    }
    istouchEnd(e) {
      var dist = e.changedTouches[0].clientX - this.coordX;
      if (dist > 200) {
        console.log(this.globals, "It doesn't work inside of the touch event.");
      } else if (dist < -200) {
      } else {
      }
      console.log(dist);
      e.stopPropagation();
    }
  }
}(jQuery));
$('.inline-grid').plugin({})

      * {
        margin: 0;
        padding: 0;
      }
      html, body
      {
        background-color: black;
      }
      div {
        position: relative;
      }
      .inline-grid {
        margin: 0 auto;
        width: 560px;
        border: 7px solid teal;
        display: flex;
        flex-flow: row;
        overflow: hidden;
      }
      .wrap {
        width: 100%;
        display: flex;
        flex-flow: row;
      }
      .cell {
        display: flex;
        flex-flow: column;
        flex-shrink: 0;
        width: 100%;
        height: 200px;
      }
      .orange {
        background-color: orange;
      }

    <div id="slider" class="inline-grid">
      <div class="wrap">
        <a href="#" class="cell orange">

        </a>
        <a href="#" class="cell blue">

        </a>
        <a href="#" class="cell crimson">

        </a>
        <a href="#" class="cell green">

        </a>
      </div>
    </div>
    <script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>

我将istouchEnd(e)更改为istouchEnd(globals)是为了直接给vars作为参数。而且我使用了return关键字来传递event，但是这种方式也行不通。

istouchEnd(globals) {
  return function(e) {
    var dist = e.changedTouches[0].clientX - this.coordX;
    if (dist > 200) {
      console.log(this.globals, "It doesn't work when this.globals are inside of the nested function.");
    } else if (dist < -200) {
    } else {
    }
    console.log(dist);

  }
  e.stopPropagation();
}

如何在嵌套函数中获得vars？

===============问题已更新==============

第一次尝试：

 exe(that) {
  that.on({
    touchstart: (e) => {
      this.coordX = e.touches[0].clientX;
      this.coordY = e.touches[0].clientY;
      return this.coordX, this.coordY;
    },
    touchmove: (e) => {
      let dx = e.touches[0].clientX,
          dy = e.touches[0].clientY,
          dist = Math.sqrt(dx + this.coordX);
      console.log('test');
    },
    touchend: (globals) => {
      return function(e) {
        var dist = e.changedTouches[0].clientX - this.coordX;
        if (dist > 200) {
          console.log(this.globals, "It doesn't work inside of the touch event.");
        } else if (dist < -200) {
        } else {
        }
        console.log(dist);
        e.stopPropagation();

      }
    }
  })
}