diff --git a/fs-ext/fs-ext.d.ts b/fs-ext/fs-ext.d.ts
new file mode 100644
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+++ b/fs-ext/fs-ext.d.ts
@@ -0,0 +1,102 @@
+// Type definitions for fs-ext
+// Project: https://github.com/baudehlo/node-fs-ext
+// Definitions by: Oguzhan Ergin <https://github.com/OguzhanE>
+// Definitions: https://github.com/borisyankov/DefinitelyTyped
+
+///<reference path="../node/node.d.ts"/>
+
+declare module "fs-ext" {
+	export * from "fs";
+ 
+	/**
+	* Asynchronous flock(2). No arguments other than a possible error are passed to the callback. 
+	* @param fd File Descriptor
+	* @param flags Flags can be 'sh', 'ex', 'shnb', 'exnb', 'un' and correspond to the various LOCK_SH, LOCK_EX, LOCK_SH|LOCK_NB, etc.
+	**/
+	export function flock(fd: number, flags: string, callback: (err: Error) => void): void;
+
+	/**
+	* Synchronous flock(2). Throws an exception on error.
+	* @param fd File Descriptor
+	* @param flags Flags can be 'sh', 'ex', 'shnb', 'exnb', 'un' and correspond to the various LOCK_SH, LOCK_EX, LOCK_SH|LOCK_NB, etc.
+ 	**/
+	export function flockSync(fd: number, flags: string):void;
+	
+	/**
+	* Asynchronous fcntl(2).
+	* @param fd File Descriptor
+	* @param cmd The supported commands are: 'getfd' ( F_GETFD ) , 'setfd' ( F_SETFD )
+	* Requiring this module adds FD_CLOEXEC to the constants module, for use with F_SETFD.
+	* @param arg arg
+	**/
+	export function fcntl(fd: number, cmd: string, arg: number, callback: (err: Error, result: number) => void):void;
+
+	/**
+	* Asynchronous fcntl(2).
+	* @param fd File Descriptor
+	* @param cmd The supported commands are: 'getfd' ( F_GETFD ) , 'setfd' ( F_SETFD )
+	* Requiring this module adds FD_CLOEXEC to the constants module, for use with F_SETFD.
+	**/
+	export function fcntl(fd: number, cmd: string, callback: (err: Error, result: number) => void):void;
+
+	/**
+	* Synchronous fcntl(2). Throws an exception on error.
+	* @param fd File Descriptor
+	* @param cmd The supported commands are: 'getfd' ( F_GETFD ) , 'setfd' ( F_SETFD )
+	* Requiring this module adds FD_CLOEXEC to the constants module, for use with F_SETFD.
+	* @param arg arg
+	* @return Returns flags
+	**/
+	export function fcntlSync(fd: number, cmd: string, arg?: number): number;
+
+	/**
+	* Asynchronous lseek(2).
+	* @param fd File Descriptor
+	* @param offset Offset
+	* @param whence 
+	* Whence can be 0 (SEEK_SET) to set the new position in bytes to offset, 1 (SEEK_CUR) to set the new 
+	* position to the current position plus offset bytes (can be negative), or 2 (SEEK_END) to set to the end 
+	* of the file plus offset bytes (usually negative or zero to seek to the end of the file).
+	**/
+	export function seek(fd: number, offset: number, whence: number, callback: (err: Error, currFilePos: number) => void): void;
+  
+	/**
+	* Synchronous lseek(2). Throws an exception on error. Returns current file position.
+	* @param fd File Descriptor
+	* @param offset Offset
+	* @param whence 
+	* Whence can be 0 (SEEK_SET) to set the new position in bytes to offset, 1 (SEEK_CUR) to set the new 
+	* position to the current position plus offset bytes (can be negative), or 2 (SEEK_END) to set to the end 
+	* of the file plus offset bytes (usually negative or zero to seek to the end of the file).
+	* @returns Returns current file position.
+	**/
+	export function seekSync(fd: number, offset: number, whence: number): number;
+
+	/**
+	* Asynchronous utime(2).
+	* @param path File path
+	* @param atime
+	* Arguments atime and mtime are in seconds as for the system call.Note that the number value of Date() is in milliseconds,
+	* so to use the 'now' value with fs.utime() you would have to divide by 1000 first, e.g. Date.now()/1000
+	* Just like for utime(2), the absence of the atime and mtime means 'now'.
+	* @param mtime
+	* Arguments atime and mtime are in seconds as for the system call.Note that the number value of Date() is in milliseconds,
+	* so to use the 'now' value with fs.utime() you would have to divide by 1000 first, e.g. Date.now()/1000
+	* Just like for utime(2), the absence of the atime and mtime means 'now'.
+	**/
+	export function utime(path: string, atime: number, mtime: number, callback: (err: Error) => void):void;
+
+	/**
+	* Synchronous version of utime(). Throws an exception on error.
+	* @param path File path
+	* @param atime
+	* Arguments atime and mtime are in seconds as for the system call.Note that the number value of Date() is in milliseconds,
+	* so to use the 'now' value with fs.utime() you would have to divide by 1000 first, e.g. Date.now()/1000
+	* Just like for utime(2), the absence of the atime and mtime means 'now'.
+	* @param mtime
+	* Arguments atime and mtime are in seconds as for the system call.Note that the number value of Date() is in milliseconds,
+	* so to use the 'now' value with fs.utime() you would have to divide by 1000 first, e.g. Date.now()/1000
+	* Just like for utime(2), the absence of the atime and mtime means 'now'.
+	**/
+	export function utimeSync(path: string, atime: number, mtime: number):void;
+}