Get the real length of a string - by correctly counting astral symbols and ignoring ansi escape codes
String#length
erroneously counts astral symbols as two characters.
$ npm install string-length
const stringLength = require('string-length');
'🐴'.length;
//=> 2
stringLength('🐴');
//=> 1
stringLength('\u001B[1municorn\u001B[22m');
//=> 7