module: define functions only once.

lib/module.js

@@ -51,6 +51,38 @@ var debug = Module._debug;
 //   -> a
 //   -> a.<ext>
 //   -> a/index.<ext>
+
+function statPath(path) {
+  var fs = NativeModule.require('fs');
+  try {
+    return fs.statSync(path);
+  } catch (ex) {}
+  return false;
+}
+
+// check if the file exists and is not a directory
+function tryFile(requestPath) {
+  var fs = NativeModule.require('fs');
+  var stats = statPath(requestPath);
+  if (stats && !stats.isDirectory()) {
+    return fs.realpathSync(requestPath);
+  }
+  return false;
+}
+
+// given a path check a the file exists with any of the set extensions
+function tryExtensions(p, exts) {
+  for (var i = 0, EL = exts.length; i < EL; i++) {
+    var filename = tryFile(p + exts[i]);
+
+    if (filename) {
+      return filename;
+    }
+  }
+  return false;
+}
+
+
 Module._findPath = function(request, paths) {
   var fs = NativeModule.require('fs');
   var exts = Object.keys(Module._extensions);
@@ -61,29 +93,6 @@ Module._findPath = function(request, paths) {
 
   var trailingSlash = (request.slice(-1) === '/');
 
-  // check if the file exists and is not a directory
-  function tryFile(requestPath) {
-    try {
-      var stats = fs.statSync(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) {
-    for (var i = 0, EL = exts.length; i < EL; i++) {
-      var filename = tryFile(p + exts[i]);
-
-      if (filename) {
-        return filename;
-      }
-    }
-    return false;
-  };
-
   var cacheKey = JSON.stringify({request: request, paths: paths});
   if (Module._pathCache[cacheKey]) {
     return 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) {