Configuration: move hasCorrectExtension to more appropriate place

lib/checker.js

@@ -3,7 +3,6 @@ var Vow = require('vow');
 var StringChecker = require('./string-checker');
 var extractJs = require('./extract-js');
 var utils = require('util');
-var path = require('path');
 
 var NodeConfiguration = require('./config/node-configuration');
 
@@ -155,7 +154,7 @@ Checker.prototype._processDirectory = function(path, fileHandler) {
                     return this._processDirectory(fullname, fileHandler);
                 }
 
-                if (!this._hasCorrectExtension(fullname)) {
+                if (!this._configuration.hasCorrectExtension(fullname)) {
                     if (!this._configuration.shouldExtractFile(fullname)) {
                         return [];
                     }
@@ -242,23 +241,6 @@ Checker.prototype._processStdin = function(stdinHandler) {
     return deferred.promise();
 };
 
-/**
- * Returns true if the file extension matches a file extension to process.
- *
- * @returns {Boolean}
- */
-Checker.prototype._hasCorrectExtension = function(testPath) {
-    var extension = path.extname(testPath).toLowerCase();
-    var basename = path.basename(testPath).toLowerCase();
-    var fileExtensions = this._configuration.getFileExtensions();
-
-    return !(
-        fileExtensions.indexOf(extension) < 0 &&
-        fileExtensions.indexOf(basename) < 0 &&
-        fileExtensions.indexOf('*') < 0
-    );
-};
-
 /**
  * Returns new configuration instance.
  *

lib/config/configuration.js

@@ -298,11 +298,29 @@ Configuration.prototype.getExcludedFileMasks = function() {
  */
 Configuration.prototype.isFileExcluded = function(filePath) {
     filePath = path.resolve(filePath);
+
     return this._excludedFileMatchers.some(function(matcher) {
         return matcher.match(filePath);
     });
 };
 
+/**
+ * Returns true if the file extension matches a file extension to process.
+ *
+ * @returns {Boolean}
+ */
+Configuration.prototype.hasCorrectExtension = function(testPath) {
+    var extension = path.extname(testPath).toLowerCase();
+    var basename = path.basename(testPath).toLowerCase();
+    var fileExtensions = this.getFileExtensions();
+
+    return !(
+        fileExtensions.indexOf(extension) < 0 &&
+        fileExtensions.indexOf(basename) < 0 &&
+        fileExtensions.indexOf('*') < 0
+    );
+};
+
 /**
  * Returns file extension list.
  *