Test char length

// ANSI      Terminal stlye \u001B[1municorn\u001B[22m
// ZWJ       https://en.wikipedia.org/wiki/Zero-width_joiner 👶
// UNICODE   ☆ 🤓 え 术
const testStrings = [
  '2189☆ 404⑂  nodejs-learning-guide (@chyingp/Ruby)',
  'Nodejs学习笔记以及经验总结，公众号"程序猿小卡"',
  '🤓 Build your own (insert technology here)',
  '后端架构师技术图谱',
  '☆🤓端',
  '☆  🤓  端',
  '\u001b[1m古\u001b[22m',
  '\u001B[1municorn\u001B[22m',
  '👶🏽', // zwj chars
  'あいうえお',
  'ｱｲｳｴｵ',
  '※脚注',
]
const testLength = [
  '49',
  '46',
  '42',
  '18',
  '5',
  '9',
  '2',
  '7',
  '2',
  '10',
  '5',
  '5',
]
// npm i utfstring string-width string-length strip-ansi power-assert-util-string-width
var utfstring    = require( 'utfstring' )                      // https://www.npmjs.com/package/utfstring
var stringWidth  = require( 'string-width' )                   // https://www.npmjs.com/package/string-width
var stringLength = require( 'string-length' )                  // https://www.npmjs.com/package/string-length
var stripAnsi    = require( 'strip-ansi' )                     // https://www.npmjs.com/package/strip-ansi
var _            = require( 'lodash' )                         // https://github.com/lodash/lodash/blob/4.13.1-npm/_stringToArray.js
var paWidth      = require( 'power-assert-util-string-width' ) // https://www.npmjs.com/package/power-assert-util-string-width

testStrings.forEach((e, i) => {
  console.log('================================================================')
  console.log('---------+---------+---------+---------+---------+---------+ raw:')
  console.log(e)
  console.log('------------------------------------------------------ js length:')
  console.log(e.length)
  console.log('------------------------------------------------------ utfstring:')
  console.log(utfstring.visual.length(e))
  console.log(utfstring.length(e))
  console.log('--------------------------------------------------- string-width:')
  console.log(stringWidth(e))
  console.log('-------------------------------------------------- string-length:')
  console.log(stringLength(e))
  console.log('----------------------------------------------------- strip-ansi:')
  console.log(stripAnsi(e).length)
  console.log('--------------------------------------------------------- lodash:')
  console.log(_.size(e))
  console.log('-------------------------------------------------------- paWidth:')
  console.log(paWidth(e))
  console.log(paWidth.narrow(e))
  console.log('-----------------------------------------------------------------')
  console.log('EXPECTED: ' + testLength[i])
  console.log('================================================================\n')
});