const getCharClassName = ( inputChar ) : string => { const char = inputChar . toLowerCase ( ) ; switch ( char ) { case "1" : return "one" ; case "2" : return "two" ; case "3" : return "three" ; case "4" : return "four" ; case "5" : return "five" ; case "6" : return "six" ; case "7" : return "seven" ; case "8" : return "eight" ; case "9" : return "nine" ; case "0" : return "zero" ; case " " : return "space" ; case "." : return "dot" ; case "," : return "semicolon" ; case "!" : return "exclamation_mark" ; default : return char ; } } ; export default getCharClassName ;