code: function castArgument(arg) {
  		if (isNumber(arg)) {
  			return parseFloat(arg);
  		}
  
  		if (helpers.isFraction(arg)) {
  			arg = arg.split('/');
  
  			return arg[0] / arg[1];
  		}
  
  		if (arg === 'false' || arg === 'true') {
  			return arg === 'true';
  		}
  
  		return arg.length ? arg : undefined;
  	}
docs: Convert argument to proper type
  
  @param {string} arg
  @returns {*}