var _addMouseData = function()

in public/webpackShims/zeroclip/zero_clipboard.js [822:863]
42 lines of code
15 McCabe index (conditional complexity)

  var _addMouseData = function (event) {
    if (event && /^_(?:click|mouse(?:over|out|down|up|move))$/.test(event.type)) {
      var srcElement = event.target;
      var fromElement = event.type === "_mouseover" && event.relatedTarget ? event.relatedTarget : undefined;
      var toElement = event.type === "_mouseout" && event.relatedTarget ? event.relatedTarget : undefined;
      var pos = _getElementPosition(srcElement);
      var screenLeft = _window.screenLeft || _window.screenX || 0;
      var screenTop = _window.screenTop || _window.screenY || 0;
      var scrollLeft = _document.body.scrollLeft + _document.documentElement.scrollLeft;
      var scrollTop = _document.body.scrollTop + _document.documentElement.scrollTop;
      var pageX = pos.left + (typeof event._stageX === "number" ? event._stageX : 0);
      var pageY = pos.top + (typeof event._stageY === "number" ? event._stageY : 0);
      var clientX = pageX - scrollLeft;
      var clientY = pageY - scrollTop;
      var screenX = screenLeft + clientX;
      var screenY = screenTop + clientY;
      var moveX = typeof event.movementX === "number" ? event.movementX : 0;
      var moveY = typeof event.movementY === "number" ? event.movementY : 0;
      delete event._stageX;
      delete event._stageY;
      _extend(event, {
        srcElement: srcElement,
        fromElement: fromElement,
        toElement: toElement,
        screenX: screenX,
        screenY: screenY,
        pageX: pageX,
        pageY: pageY,
        clientX: clientX,
        clientY: clientY,
        x: clientX,
        y: clientY,
        movementX: moveX,
        movementY: moveY,
        offsetX: 0,
        offsetY: 0,
        layerX: 0,
        layerY: 0
      });
    }
    return event;
  };