TypeError:cognitiveServices.face不是构造函数

Question

我正在为nodejs 使用Microsoft Cognitive Services api.我有以下代码

  const cognitiveServices = require('cognitive-services');

  const face = new cognitiveServices.face({
      API_KEY: yourApiKey
  })

  const parameters = {
      returnFaceId: "true"
      returnFaceLandmarks: "false"
  };
  const body = {
      "url": "URL of input image"
  };


  face.detect({
          parameters,
          body
      })
      .then((response) => {
          console.log('Got response', response);
      })
      .catch((err) => {
          console.error('Encountered error making request:', err);
      });

但是,当我执行此代码时,我得到以下错误

  const face = new cognitiveServices.face({
               ^

  TypeError: cognitiveServices.face is not a constructor
      at Object.<anonymous> (/Users/..../face.js:3:14)
      at Module._compile (module.js:556:32)
      at Object.Module._extensions..js (module.js:565:10)
      at Module.load (module.js:473:32)
      at tryModuleLoad (module.js:432:12)
      at Function.Module._load (module.js:424:3)
      at Module.runMain (module.js:590:10)
      at run (bootstrap_node.js:394:7)
      at startup (bootstrap_node.js:149:9)
      at bootstrap_node.js:509:3

我该如何解决这个错误？

Answer 1

看起来cognitive-services模块的文档不正确:您需要在cognitiveServices.face(...)没有的情况下打电话new.

如果你看一下https://github.com/joshbalfour/node-cognitive-services/blob/master/api/face.js,你可以看到它face被定义为一个箭头函数,这使它不是一个构造函数.有关具体情况的详细信息,请参阅/sf/answers/2592632031/.

编辑:看起来问题已在此处报告:https://github.com/joshbalfour/node-cognitive-services/issues/2