function createPadDir(fromRight) {
	      return function(string, length, chars) {
	        string = baseToString(string);
	        return (fromRight ? string : '') + createPadding(string, length, chars) + (fromRight ? '' : string);
	      };
	    }
Creates a function for `_.padLeft` or `_.padRight`.

@private
@param {boolean} [fromRight] Specify padding from the right.
@returns {Function} Returns the new pad function.