这就是最新ibm-watson node-sdk对我有用的东西，

使用此命令安装node-sdk

npm install --save ibm-watson

然后，在您的app.js或server.js节点文件中使用此代码段以接收IAM访问令牌

const watson = require('ibm-watson/sdk');
const { IamAuthenticator } = require('ibm-watson/auth');

// to get an IAM Access Token
const authorization = new watson.AuthorizationV1({
  authenticator: new IamAuthenticator({ apikey: '<apikey>' }),url: ''
});

authorization.getToken(function (err,token) {
  if (!token) {
    console.log('error: ',err);
  } else {
    console.log('token: ',token);
  }
});

您还可以将IamAuthenticator直接用于语音转文本

const fs = require('fs');
const SpeechToTextV1 = require('ibm-watson/speech-to-text/v1');
const { IamAuthenticator } = require('ibm-watson/auth');

const speechToText = new SpeechToTextV1({
  authenticator: new IamAuthenticator({ apikey: '<apikey>' }),url: 'https://stream.watsonplatform.net/speech-to-text/api/'
});

const params = {
  // From file
  audio: fs.createReadStream('./resources/speech.wav'),contentType: 'audio/l16; rate=44100'
};

speechToText.recognize(params)
  .then(response => {
    console.log(JSON.stringify(response.result,null,2));
  })
  .catch(err => {
    console.log(err);
  });

// or streaming
fs.createReadStream('./resources/speech.wav')
  .pipe(speechToText.recognizeUsingWebSocket({ contentType: 'audio/l16; rate=44100' }))
  .pipe(fs.createWriteStream('./transcription.txt'));

在您的other post中查看我的回答可能会有所帮助。如果要自己管理令牌认证过程，请使用BearerTokenAuthenticator。