var ProWritingAidApi = require('pro_writing_aid_api');

var api = new ProWritingAidApi.TextApi();
api.apiClient.basePath="https://api.prowritingaid.com";
api.apiClient.defaultHeaders={'licenseCode': 'your license code'}
var request = new ProWritingAidApi.TextAnalysisRequest(
  "I couldnt wait any any longer, I new what I hadd to do",
  ['grammar'],
  "General",
  "En"
);
api.post(request)
  .then(function(data) {
    console.log('API called successfully. Returned data: ');
    console.log(data);
  }, function(error) {
    console.error(error);
  });