How to use the npmlog.addLevel function in npmlog

// Copyright & License details are available under JXCORE_LICENSE file

var path = require('path')
var fs = require('fs')
var log = require('npmlog')
var npm = require('./npm.js')

var autoremove_arr = null;

// for jxcore related logging
log.addLevel('jxcore', 10000, { fg: 'cyan', bg: 'black' }, 'JXcore')

var arg_useExecPath = null;

// sets multiple env variables
exports.setVariables = function() {

  var cmd = process.argv[2];

  if (typeof jxcore === 'undefined' || !cmd)
    return;

  // for shortcuts refer to deps/npm/lib/npm.js # 64
  var supportedCommands = [
    'install', 'i', 'isntall',
    'rebuild', 'rb',
    'update', 'up'

npmlog.addLevel('basic', 3000, {
  fg: 'white'
}, '');

// "INFO ..."
// use to display information that describes
// the process being executed or any useful output that
// the end developer may benefit from knowing.
npmlog.addLevel('info', 3000, {
  fg: 'grey'
}, 'INFO');

// "HTTP ..."
// Currently unused, but should be used to indicate
// any HTTP requests being made on behalf of the CLI
npmlog.addLevel('http', 4000, {
  fg: 'grey'
}, 'HTTP');

// "WARN ..."
// Indicates potentially harmful situations
//
npmlog.addLevel('warn', 5000, {
  fg: 'black',
  bg: 'yellow'
}, 'WARN');

//
// "ERR! ..."
// Indicates failure
//
npmlog.addLevel('error', 6000, {

npmlog.addLevel('trace', 2000, {
  fg: 'blue'
}, 'TRACE');

// "    ..."
// No text prefix displayed.
// Use for lists of things.
npmlog.addLevel('basic', 3000, {
  fg: 'white'
}, '');

// "INFO ..."
// use to display information that describes
// the process being executed or any useful output that
// the end developer may benefit from knowing.
npmlog.addLevel('info', 3000, {
  fg: 'grey'
}, 'INFO');

// "HTTP ..."
// Currently unused, but should be used to indicate
// any HTTP requests being made on behalf of the CLI
npmlog.addLevel('http', 4000, {
  fg: 'grey'
}, 'HTTP');

// "WARN ..."
// Indicates potentially harmful situations
//
npmlog.addLevel('warn', 5000, {
  fg: 'black',
  bg: 'yellow'

configureLogging() {
    const { loglevel } = this.options;

    if (loglevel) {
      log.level = loglevel;
    }

    // handle log.success()
    log.addLevel("success", 3001, { fg: "green", bold: true });

    // create logger that subclasses use
    this.logger = log.newGroup(this.name);

    // emit all buffered logs at configured level and higher
    log.resume();
  }

fg: 'grey'
}, 'HTTP');

// "WARN ..."
// Indicates potentially harmful situations
//
npmlog.addLevel('warn', 5000, {
  fg: 'black',
  bg: 'yellow'
}, 'WARN');

//
// "ERR! ..."
// Indicates failure
//
npmlog.addLevel('error', 6000, {
  fg: 'red',
  bg: 'black'
}, 'ERR!');

npmlog.level = 'basic';

Object.defineProperty(npmlog, 'heading', {
  set(value) { // jshint ignore:line
    // This strange code is necessary to prevent
    // node-pre-gyp from setting the npmlog.heading
    // property.
    //
    // There exists a rare case in ./lib/usb-connection.js
    // where a third party dependency (usb) is loaded _after_ the
    // internal dependencies.
    //

*
 * @const {string}
 */
logger.NO_CLIENT_ID = '*';

npmlog.addLevel('all', -Infinity, styles.inverse, 'all   ');
npmlog.addLevel('proton_data', -Infinity, styles.green, 'data  ');
npmlog.addLevel('proton_exit', -Infinity, styles.yellow, 'exit  ');
npmlog.addLevel('proton_entry', -Infinity, styles.yellow, 'entry ');
npmlog.addLevel('proton', -Infinity, styles.yellow, 'func  ');
npmlog.addLevel('data_often', 100, styles.green, 'data  ');
npmlog.addLevel('exit_often', 100, styles.yellow, 'exit  ');
npmlog.addLevel('entry_often', 100, styles.yellow, 'entry ');
npmlog.addLevel('often', 100, styles.yellow, 'func  ');
npmlog.addLevel('raw', 200, styles.inverse, 'raw   ');
npmlog.addLevel('detail', 300, styles.green, 'detail');
npmlog.addLevel('debug', 500, styles.inverse, 'debug ');
npmlog.addLevel('emit', 800, styles.green, 'emit  ');
npmlog.addLevel('data', 1000, styles.green, 'data  ');
npmlog.addLevel('parms', 1200, styles.yellow, 'parms ');
npmlog.addLevel('header', 1500, styles.yellow, 'header');
npmlog.addLevel('exit', 1500, styles.yellow, 'exit  ');
npmlog.addLevel('entry', 1500, styles.yellow, 'entry ');
npmlog.addLevel('entry_exit', 1500, styles.yellow, 'func  ');
npmlog.addLevel('error', 1800, styles.red, 'error ');
npmlog.addLevel('object', 1900, styles.red, 'object');
npmlog.addLevel('ffdc', 2000, styles.red, 'ffdc  ');


/**
 * Set the logging stream. By default stderr will be used, but
 * this can be changed to stdout by setting the environment

function createLogger (name: string, level: number, style: StyleObject): (...args: Array) => void {
    const loggerName = `tractor-${name}`;
    addLevel(loggerName, level, style, name);
    return function (message: string, ...args: Array): void {
        log(loggerName, '', message, ...args);
    };
}

/**
 * The identifier used when a log entry is not associated with a
 * particular client.
 *
 * @const {string}
 */
logger.NO_CLIENT_ID = '*';

npmlog.addLevel('all', -Infinity, styles.inverse, 'all   ');
npmlog.addLevel('proton_data', -Infinity, styles.green, 'data  ');
npmlog.addLevel('proton_exit', -Infinity, styles.yellow, 'exit  ');
npmlog.addLevel('proton_entry', -Infinity, styles.yellow, 'entry ');
npmlog.addLevel('proton', -Infinity, styles.yellow, 'func  ');
npmlog.addLevel('data_often', 100, styles.green, 'data  ');
npmlog.addLevel('exit_often', 100, styles.yellow, 'exit  ');
npmlog.addLevel('entry_often', 100, styles.yellow, 'entry ');
npmlog.addLevel('often', 100, styles.yellow, 'func  ');
npmlog.addLevel('raw', 200, styles.inverse, 'raw   ');
npmlog.addLevel('detail', 300, styles.green, 'detail');
npmlog.addLevel('debug', 500, styles.inverse, 'debug ');
npmlog.addLevel('emit', 800, styles.green, 'emit  ');
npmlog.addLevel('data', 1000, styles.green, 'data  ');
npmlog.addLevel('parms', 1200, styles.yellow, 'parms ');
npmlog.addLevel('header', 1500, styles.yellow, 'header');
npmlog.addLevel('exit', 1500, styles.yellow, 'exit  ');
npmlog.addLevel('entry', 1500, styles.yellow, 'entry ');
npmlog.addLevel('entry_exit', 1500, styles.yellow, 'func  ');
npmlog.addLevel('error', 1800, styles.red, 'error ');
npmlog.addLevel('object', 1900, styles.red, 'object');
npmlog.addLevel('ffdc', 2000, styles.red, 'ffdc  ');

npmlog.addLevel('data_often', 100, styles.green, 'data  ');
npmlog.addLevel('exit_often', 100, styles.yellow, 'exit  ');
npmlog.addLevel('entry_often', 100, styles.yellow, 'entry ');
npmlog.addLevel('often', 100, styles.yellow, 'func  ');
npmlog.addLevel('raw', 200, styles.inverse, 'raw   ');
npmlog.addLevel('detail', 300, styles.green, 'detail');
npmlog.addLevel('debug', 500, styles.inverse, 'debug ');
npmlog.addLevel('emit', 800, styles.green, 'emit  ');
npmlog.addLevel('data', 1000, styles.green, 'data  ');
npmlog.addLevel('parms', 1200, styles.yellow, 'parms ');
npmlog.addLevel('header', 1500, styles.yellow, 'header');
npmlog.addLevel('exit', 1500, styles.yellow, 'exit  ');
npmlog.addLevel('entry', 1500, styles.yellow, 'entry ');
npmlog.addLevel('entry_exit', 1500, styles.yellow, 'func  ');
npmlog.addLevel('error', 1800, styles.red, 'error ');
npmlog.addLevel('object', 1900, styles.red, 'object');
npmlog.addLevel('ffdc', 2000, styles.red, 'ffdc  ');


/**
 * Set the logging stream. By default stderr will be used, but
 * this can be changed to stdout by setting the environment
 * variable MQLIGHT_NODE_LOG_STREAM=stdout.
 */
logger.setStream(process.env.MQLIGHT_NODE_LOG_STREAM || 'stderr');


/**
 * Set the amount of message data that will get logged. The
 * default is 100 bytes, but this can be altered by setting the
 * environment variable MQLIGHT_NODE_MESSAGE_DATA_SIZE to a
 * different number.

logger.NO_CLIENT_ID = '*';

npmlog.addLevel('all', -Infinity, styles.inverse, 'all   ');
npmlog.addLevel('proton_data', -Infinity, styles.green, 'data  ');
npmlog.addLevel('proton_exit', -Infinity, styles.yellow, 'exit  ');
npmlog.addLevel('proton_entry', -Infinity, styles.yellow, 'entry ');
npmlog.addLevel('proton', -Infinity, styles.yellow, 'func  ');
npmlog.addLevel('data_often', 100, styles.green, 'data  ');
npmlog.addLevel('exit_often', 100, styles.yellow, 'exit  ');
npmlog.addLevel('entry_often', 100, styles.yellow, 'entry ');
npmlog.addLevel('often', 100, styles.yellow, 'func  ');
npmlog.addLevel('raw', 200, styles.inverse, 'raw   ');
npmlog.addLevel('detail', 300, styles.green, 'detail');
npmlog.addLevel('debug', 500, styles.inverse, 'debug ');
npmlog.addLevel('emit', 800, styles.green, 'emit  ');
npmlog.addLevel('data', 1000, styles.green, 'data  ');
npmlog.addLevel('parms', 1200, styles.yellow, 'parms ');
npmlog.addLevel('header', 1500, styles.yellow, 'header');
npmlog.addLevel('exit', 1500, styles.yellow, 'exit  ');
npmlog.addLevel('entry', 1500, styles.yellow, 'entry ');
npmlog.addLevel('entry_exit', 1500, styles.yellow, 'func  ');
npmlog.addLevel('error', 1800, styles.red, 'error ');
npmlog.addLevel('object', 1900, styles.red, 'object');
npmlog.addLevel('ffdc', 2000, styles.red, 'ffdc  ');


/**
 * Set the logging stream. By default stderr will be used, but
 * this can be changed to stdout by setting the environment
 * variable MQLIGHT_NODE_LOG_STREAM=stdout.
 */
logger.setStream(process.env.MQLIGHT_NODE_LOG_STREAM || 'stderr');