请教module "fetch-wechat.js" is not defined的问题

 在app.js的onLaunch里调用插件configPlugin函数

var fetchWechat = require('fetch-wechat');
var tf = require('@tensorflow/tfjs-core');
var plugin = requirePlugin('tfjsPlugin');
//app.js
App({
  onLaunch: function () {
    plugin.configPlugin({
      // polyfill fetch function
      fetchFunc: fetchWechat.fetchFunc(),
      // inject tfjs runtime
      tf,
      // provide webgl canvas
      canvas: wx.createOffscreenCanvas()
    });
  }
});

插入代码后测试tensorflow插件

结果没有显示出插件安装成功，是这样的