function firstFunction (aaa, callback) {
    // do async stuff
    callback(result)
}

function secondFunction (bbb, callback) {
    firstFunction (aaa, function (result) {
    // do async stuff
    callback(result)
    }
}

secondFunction (ccc, function (result) {
    // script actions/verifications
}

exports.getTableColumns = function (tableSelector, callback) {
        var columnNames = [];
        var tableHeaderSelector = tableSelector + ' > tbody > tr:nth-of-type(1) > th';
        client.elements('css selector', tableHeaderSelector, function (objectResults) {
            for (var i in objectResults.value) {
                this.elementIdAttribute(objectResults.value[i].ELEMENT, 'innerText', function(result) {
                    columnNames.push(result.value);
                    if (columnNames.length == objectResults.value.length) {
                        callback(columnNames);
                    }
                });
            }
        });
    }

var path = require('path');
var utils = require( path.resolve( __dirname, "./getTableColumns" ) );

exports.getColumnValues = function (columnName, tableSelector, callback) {
        utils.getTableColumns(tableSelector, function (columnList) {
            var columnIndex = columnList.indexOf(columnName) + 1;
            var columnValues = [];
            cellSelector = tableSelector + ' > tbody > tr:nth-of-type(3) > td:nth-of-type(' + columnIndex + ')';
            client.element('css selector', cellSelector, function (objectResult) {
                this.elementIdAttribute(objectResult.value.ELEMENT, 'childElementCount', function(result1) {
                    for (var j = 2; j < 22; j++) {
                        cellSelector = tableSelector + ' > tbody > tr:nth-of-type(' + j + ') > td:nth-of-type(' + columnIndex + ')';
                        client.element('css selector', cellSelector, function (objectResult) {
                            this.elementIdAttribute(objectResult.value.ELEMENT, 'innerText', function(result) {
                                columnValues.push(result.value);
                                if (columnValues.length == 20) {
                                    callback(columnValues);
                                }
                            });
                        });
                    }
                });
            });
        });
    }

var utils = require('../../lib/utils/getColumnValues.js');
utils.getColumnValues('Route', 'table.table-striped', function (result) {
//do something
}

// utils/awesome.js
// Your utility functions
module.exports = {
  firstFunction,
};


// Another file
const utils = require('./utils/awesome.js');

function second(){
  utils.firstFunction();
  // kaboom
}