move fs extensions into a subdir

lib/fs/file-follower.js

@@ -4,7 +4,7 @@
 var fs = require('fs')
   , util = require('util')
   , EventEmitter = require('events').EventEmitter
-  , FileExt = require('./file')
+  , batteries = require('./')
   ;
 
 module.exports = FileFollower;
@@ -17,7 +17,7 @@ function FileFollower(file, options) {
   this.currSize = fs.statSync(file).size;
   this.prevSize = this.currSize;
   this.interval = options.interval || 1000;
-  FileExt.eachLine(file,
+  batteries.fs.eachLine(file,
     { line: function(line) {
         self.emit('line', line);
       }

lib/fs/index.js

@@ -2,10 +2,9 @@
 // Copyright 2010 - 2011 Sami Samhuri <sami@samhuri.net>
 
 var fs = require('fs')
-  , ArrayExt = require('./array')
+  , batteries = require('../')
   , FileFollower = require('./file-follower')
   , LineEmitter = require('./line-emitter')
-  , ObjectExt = require('./object')
   , constants = require('constants')
   , FileExt
   ;
@@ -36,10 +35,10 @@ Object.keys(Object.getPrototypeOf(s)).forEach(function(k) {
 });
 
 exports.extendNative = function() {
-  ObjectExt.extend(fs, FileExt);
+  batteries.object.extend(fs, FileExt);
 };
 
-ObjectExt.extend(exports, FileExt);
+batteries.object.extend(exports, FileExt);
 
 function eachLine(f, optionsOrLineFn, endFn) {
   var lineFn, hasLineFn, hasEndFn;
@@ -81,7 +80,7 @@ function grep(regex, f, callback) {
   var results = [];
   eachLine(f,
     { line: function(line) { if (line.match(regex)) results.push(line); }
-    , end: callback(results)
+    , end: function() { callback(results); }
     });
 }