text: export function dataToArray(vars) {
    if (Array.isArray(vars)) {
      return vars;
    }
  
    return [vars];
  }
  var transitionEndObject = {
    transition: 'transitionend',
    WebkitTransition: 'webkitTransitionEnd',
    MozTransition: 'transitionend',
    OTransition: 'oTransitionEnd otransitionend'
  };
  export var transitionStr = Object.keys(transitionEndObject).filter(function (key) {
    if (typeof document === 'undefined') {
      return false;
    }
  
    var html = document.getElementsByTagName('html')[0];
    return key in (html ? html.style : {});
  })[0];
  export var transitionEnd = transitionEndObject[transitionStr];
  export function addEventListener(target, eventType, callback, options) {
    if (target.addEventListener) {
      target.addEventListener(eventType, callback, options);
    } else if (target.attachEvent) {
      // tslint:disable-line
      target.attachEvent("on".concat(eventType), callback); // tslint:disable-line
    }
  }
  export function removeEventListener(target, eventType, callback, options) {
    if (target.removeEventListener) {
      target.removeEventListener(eventType, callback, options);
    } else if (target.attachEvent) {
      // tslint:disable-line
      target.detachEvent("on".concat(eventType), callback); // tslint:disable-line
    }
  }
  export function transformArguments(arg, cb) {
    var result = typeof arg === 'function' ? arg(cb) : arg;
  
    if (Array.isArray(result)) {
      if (result.length === 2) {
        return result;
      }
  
      return [result[0], result[1]];
    }
  
    return [result];
  }
  export var isNumeric = function isNumeric(value) {
    return !isNaN(parseFloat(value)) && isFinite(value);
  };
  export var windowIsUndefined = !(typeof window !== 'undefined' && window.document && window.document.createElement);
  export var getTouchParentScroll = function getTouchParentScroll(root, currentTarget, differX, differY) {
    if (!currentTarget || currentTarget === document || currentTarget instanceof Document) {
      return false;
    } // root 为 drawer-content 设定了 overflow, 判断为 root 的 parent 时结束滚动；
  
  
    if (currentTarget === root.parentNode) {
      return true;
    }
  
    var isY = Math.max(Math.abs(differX), Math.abs(differY)) === Math.abs(differY);
    var isX = Math.max(Math.abs(differX), Math.abs(differY)) === Math.abs(differX);
    var scrollY = currentTarget.scrollHeight - currentTarget.clientHeight;
    var scrollX = currentTarget.scrollWidth - currentTarget.clientWidth;
    var style = document.defaultView.getComputedStyle(currentTarget);
    var overflowY = style.overflowY === 'auto' || style.overflowY === 'scroll';
    var overflowX = style.overflowX === 'auto' || style.overflowX === 'scroll';
    var y = scrollY && overflowY;
    var x = scrollX && overflowX;
  
    if (isY && (!y || y && (currentTarget.scrollTop >= scrollY && differY < 0 || currentTarget.scrollTop <= 0 && differY > 0)) || isX && (!x || x && (currentTarget.scrollLeft >= scrollX && differX < 0 || currentTarget.scrollLeft <= 0 && differX > 0))) {
      return getTouchParentScroll(root, currentTarget.parentNode, differX, differY);
    }
  
    return false;
  };