when import mockjs you have todo this.

hi,i use mockjs in my project.found the mockjs rewrite window.XMLHttpRequest. when ajax load .shp file the respnse type is string. then you todo like this,

import Mock from 'mockjs'
...
...
Mock.XHR.prototype.proxy_send = Mock.XHR.prototype.send
Mock.XHR.prototype.send = function() {
  if (this.custom.xhr) {
    this.custom.xhr.withCredentials = this.withCredentials || false
  }
  if(this.responseType==="arraybuffer"){
    //load .shp file
    this.custom.xhr.responseType="arraybuffer"
  }
  this.proxy_send(...arguments)
}

calvinmetcalf / shapefile-js

when import mockjs you have todo this. #110