Returning error in custom command is throwing TypeError

[harshit-bs]

Description of the bug/issue

So when I provide the correct API token in following custom-command everything works fine, but when I purposely use a bad Api token I get that type error.

Custom Command

module.exports = class GetEmailBody {
    async command(inboxId) {
      let returnValue;
      try {
          returnValue = await getEmail(inboxId);
      } catch (err) {
        console.error('An error occurred', err.message);
        returnValue = {
          status: -1,
          error: err.message
        }
      }
  
      return returnValue;
    }
  }
  
const getEmail = async (inboxId) => {
    const superagent = require('superagent');
    return await superagent
        .get(`https://redacted.com/api/v1/inboxes/${inboxId}/messages`)
        .set('Api-Token', 'wrongApiToken')
        .set('Content-type', 'application/json')
        .then(res => {
            return JSON.parse(res.text).length;
        }).catch(err => {
        //return err.message;
            throw new Error(err.message);
        });
}

Sample test

module.exports = {
  'should get messages': async (browser) => {
    console.log(await browser.getEmailBody(112233));
    browser.assert.expectedInboxCount(4, 112233).end();
  }
}

Error Log

 → TypeError

    Error while running "getEmailBody" command: [TypeError] instance.reportProtocolErrors is not a function
      - writing an ES6 async test case? - keep in mind that commands return a Promise; 
      - writing unit tests? - make sure to specify "unit_tests_mode=true" in your config.
    Stack Trace :
        at C:\Users\Mr\AppData\Roaming\npm\node_modules\nightwatch\lib\api\_loaders\command.js:183:60
        at processTicksAndRejections (node:internal/process/task_queues:96:5)

Nightwatch.js Version

2.3.3

NPM Version

8.16.0

Node Version

18.7.0

Browser

Chrome 104.0.0