微信小程序报错记录

VM5212:1 thirdScriptError 
 sdk uncaught third Error 
 _index.indexModel is not a constructor 
 TypeError: _index.indexModel is not a constructor
    at http://127.0.0.1:59438/appservice/pages/index/index.js:5:13
    at require (http://127.0.0.1:59438/appservice/__dev__/WAService.js:1:871207)
    at :41:7
    at HTMLScriptElement.scriptLoaded (http://127.0.0.1:59438/appservice/appservice?t=1547283058646:1213:21)
    at HTMLScriptElement.script.onload (http://127.0.0.1:59438/appservice/appservice?t=1547283058646:1225:20)

问题原因忘记加上export { indexModel }