fix unresolved lib methods

Author: Lexachoc

src/lib/index.js

@@ -10,7 +10,8 @@ var MAX_SAFE = numConstants.FP_SAFE;
 var MIN_SAFE = -MAX_SAFE;
 var BADNUM = numConstants.BADNUM;
 
-var lib = (module.exports = {});
+module.exports = {};
+var lib = module.exports;
 
 lib.adjustFormat = function adjustFormat(formatStr) {
     if (!formatStr || /^\d[.]\df/.test(formatStr) || /[.]\d%/.test(formatStr)) return formatStr;