Javascript :: using switch #js

UsingSwitch1.js

const isTruthy = (anArg) => {
    if (anArg) return true;
    
      switch (anArg) {
          case false:
              return 'The boolean value false is falsey';
          case null:
              return 'The null value is falsey';
          case undefined:
              return 'undefined is falsey';
          case 0:
              return 'The number 0 is falsey (the only falsey number)';
          case '':
              return 'The empty string is falsey (the only falsey string)';
          default:
              return 'NaN is falsey.';
      }
  }