[Refactor] sync: Do not throw on missing files in isFile/isDirectory (#256)

Author: Mark Molinaro

lib/sync.js

@@ -9,22 +9,22 @@ var realpathFS = fs.realpathSync && typeof fs.realpathSync.native === 'function'
 
 var defaultIsFile = function isFile(file) {
     try {
-        var stat = fs.statSync(file);
+        var stat = fs.statSync(file, { throwIfNoEntry: false });
     } catch (e) {
         if (e && (e.code === 'ENOENT' || e.code === 'ENOTDIR')) return false;
         throw e;
     }
-    return stat.isFile() || stat.isFIFO();
+    return !!stat && (stat.isFile() || stat.isFIFO());
 };
 
 var defaultIsDir = function isDirectory(dir) {
     try {
-        var stat = fs.statSync(dir);
+        var stat = fs.statSync(dir, { throwIfNoEntry: false });
     } catch (e) {
         if (e && (e.code === 'ENOENT' || e.code === 'ENOTDIR')) return false;
         throw e;
     }
-    return stat.isDirectory();
+    return !!stat && stat.isDirectory();
 };
 
 var defaultRealpathSync = function realpathSync(x) {