OpenLayers的import失败问题

@[TOC]OpenLayers的import失败问题

一般情况，只需要在new的地方加上对应的包名即可解决问题。

但是有时候官方文档中的例子并不是new，比如

  import {defaults as defaultInteractions, Pointer as PointerInteraction} from 'ol/interaction.js';
 	...
 	...
 	...
 var Drag = (function (PointerInteraction) {
    function Drag() {
      PointerInteraction.call(this, {....
     ....
     ....
   var map = new Map({
    interactions: defaultInteractions().extend([new Drag()]),

对于以上情况，如下修改即可：

var PointerInteraction = ol.interaction.Pointer;//这样导入不报错
var Drag = (function (PointerInteraction) {
function Drag() {
PointerInteraction.call(this, {

…

var map = new ol.Map({
interactions: ol.interaction.defaults().extend([new Drag()]),