module: define functions only once.

lib/module.js

@@ -51,29 +51,27 @@ var debug = Module._debug;
 //   -> a
 //   -> a.<ext>
 //   -> a/index.<ext>
-Module._findPath = function(request, paths) {
-  var fs = NativeModule.require('fs');
-  var exts = Object.keys(Module._extensions);
 
-  if (request.charAt(0) === '/') {
-    paths = [''];
+function statPath(path) {
+  var fs = NativeModule.require('fs');
+  try {
+    return fs.statSync(path);
+  } catch (ex) {}
+  return false;
 }
 
-  var trailingSlash = (request.slice(-1) === '/');
-
 // check if the file exists and is not a directory
 function tryFile(requestPath) {
-    try {
-      var stats = fs.statSync(requestPath);
+  var fs = NativeModule.require('fs');
+  var stats = statPath(requestPath);
   if (stats && !stats.isDirectory()) {
     return fs.realpathSync(requestPath);
   }
-    } catch (e) {}
   return false;
-  };
+}
 
 // given a path check a the file exists with any of the set extensions
-  function tryExtensions(p, extension) {
+function tryExtensions(p, exts) {
   for (var i = 0, EL = exts.length; i < EL; i++) {
     var filename = tryFile(p + exts[i]);
 
@@ -82,7 +80,18 @@ Module._findPath = function(request, paths) {
     }
   }
   return false;
-  };
+}
+
+
+Module._findPath = function(request, paths) {
+  var fs = NativeModule.require('fs');
+  var exts = Object.keys(Module._extensions);
+
+  if (request.charAt(0) === '/') {
+    paths = [''];
+  }
+
+  var trailingSlash = (request.slice(-1) === '/');
 
   var cacheKey = JSON.stringify({request: request, paths: paths});
   if (Module._pathCache[cacheKey]) {
@@ -100,13 +109,13 @@ Module._findPath = function(request, paths) {
 
       if (!filename && !trailingSlash) {
         // try it with each of the extensions
-        filename = tryExtensions(basePath);
+        filename = tryExtensions(basePath, exts);
       }
     }
 
     if (!filename) {
       // try it with each of the extensions at "index"
-      filename = tryExtensions(path.resolve(basePath, 'index'));
+      filename = tryExtensions(path.resolve(basePath, 'index'), exts);
     }
 
     if (filename) {