Issue.js

import db from '../db';

export default class Issue {
  constructor(data) {
    ...
  }

  static insertNewIssue(data) {
   // var value = null;
    db('issue').insert({
      agency_id: data.agencyId,
      contact_id: 1,
      tree_problem_id: data.id,
      address_id: 11,
      permission_to_access: data.extra.permission === 'true',
      notes: data.extra.notes,
      info: 'some info'
    }).then((res) => {
      return {success: true, result: res};
    })
    .catch((error) => {
      console.log('error inserting new Issue:' + JSON.stringify(error));
      return {success: false, result: error};
    });
/*    console.log(value);
    return value;*/
  }
}

submitIssue.js

import Issue from '../../models/Issue';
// this is part of an API the new Promise((resolve, reject) => ... is ok and it works
export default function submitIssue(req) {
  return new Promise((resolve,reject) => {
    const result = Issue.insertNewIssue(req.body);
    console.log(result);
    if(result.success) {
      resolve(result.result);
    } else {
      reject(result.result);
    }
  });
}