diff --git a/i18n-node/i18n-node.d.ts b/i18n-node/i18n-node.d.ts
new file mode 100644
index 000000000..5eb5043da
--- /dev/null
+++ b/i18n-node/i18n-node.d.ts
@@ -0,0 +1,240 @@
+// Type definitions for i18n-node 0.5.0
+// Project: https://github.com/mashpie/i18n-node
+// Definitions by: Maxime LUCE <https://github.com/SomaticIT>
+// Definitions: https://github.com/borisyankov/DefinitelyTyped
+
+/// <reference path="../express/express.d.ts" />
+declare module i18n {
+    export interface ConfigurationOptions {
+        /** Setup some locales - other locales default to en silently */
+        locales?: string[];
+        /** Alter a site wide default locale */
+        defaultLocale?: string;
+
+        /**
+         * Sets a custom cookie name to parse locale settings from
+         * @default null
+         */
+        cookie?: string;
+        /**
+         * Where to store json files, relative to modules directory
+         * @default "./locales"
+         */
+        directory?: string;
+
+        /** 
+         * whether to write new locale information to disk
+         * @default true
+         */
+        updateFiles?: boolean;
+
+        /** 
+         * What to use as the indentation unit
+         * @default "\t"
+         */
+        indent?: string;
+
+        /** 
+         * Setting extension of json files (you might want to set this to '.js' according to webtranslateit)
+         * @default ".json"
+         */
+        extension?: string;
+
+        /** 
+         * Enable object notation
+         * @default false
+         */
+        objectNotation?: boolean;
+    }
+    export interface PluralOptions {
+        singular: string;
+        plural: string;
+        count: number;
+    }
+
+    export interface LocaleCatalog {
+        [key: string]: string;
+    }
+    export interface GlobalCatalog {
+        [key: string]: LocaleCatalog;
+    }
+
+    /**
+     * Configure current i18n instance
+     * @param {ConfigurationOptions} options - configuration options for i18n
+     */
+    function configure(options: ConfigurationOptions): void;
+
+    /**
+     * Initialize i18n middleware for express
+     * @param {Express.Request} request - Current express request
+     * @param {Express.Response} response - Current express response
+     * @param {Function} next - Callback to continue process
+     */
+    function init(request: Express.Request, response: Express.Response, next?: Function): void;
+
+    /**
+     * Translate the given phrase using locale configuration
+     * @param {string} phrase - The phrase to translate
+     * @returns {string} The translated phrase
+     */
+    function __(phrase: string, ...replace: string[]): string;
+
+    /**
+     * Translate with plural condition the given phrase and count using locale configuration
+     * @param {PluralOptions} options - Options for plural translate
+     * @returns {string} The translated phrase
+     */
+    function __n(options: PluralOptions): string;
+    /**
+     * Translate with plural condition the given phrase and count using locale configuration
+     * @param {string} singular - The singular pharse to translate if count is <= 1
+     * @param {string} plural - The plural pharse to translate if count is > 1
+     * @param {number} count - The number which allow to select from plural to singular
+     * @returns {string} The translated phrase
+     */
+    function __n(singular: string, plural: string, count: number): string;
+    /**
+     * Translate with plural condition the given phrase and count using locale configuration
+     * @param {string} singular - The singular pharse to translate if count is <= 1
+     * @param {string} plural - The plural pharse to translate if count is > 1
+     * @param {string} count - The number which allow to select from plural to singular
+     * @returns {string} The translated phrase
+     */
+    function __n(singular: string, plural: string, count: string): string;
+
+    /**
+     * Change the current active locale
+     * @param {string} locale - The locale to set as default
+     */
+    function setLocale(locale: string): void;
+    /**
+     * Change the current active locale for specified request
+     * @param {Express.Request} request - The request to change locale on
+     * @param {string} locale - The locale to set as default
+     */
+    function setLocale(request: Express.Request, locale: string): void;
+
+    /**
+     * Get the current active locale
+     * @returns {string} The current locale in request
+     */
+    function getLocale(): string;
+    /**
+     * Get the current active locale for specified request
+     * @param {Express.Request} request - The request to get locale for
+     * @returns {string} The current locale in request
+     */
+    function getLocale(request: Express.Request): string;
+
+    /**
+     * Get the current global catalog
+     * @returns {GlobalCatalog} The current global catalog
+     */
+    function getCatalog(): GlobalCatalog;
+    /**
+     * Get the catalog for the given locale
+     * @param {string} locale - The locale to get catalog for
+     * @returns {LocaleCatalog} The specified locale catalog
+     */
+    function getCatalog(locale: string): LocaleCatalog;
+    /**
+     * Get the current active locale catalog for specified request
+     * @param {Express.Request} request - The request to get locale catalog for
+     * @returns {LocaleCatalog} The current locale catalog for the specified request
+     */
+    function getCatalog(request: Express.Request): LocaleCatalog;
+    /**
+     * Get the current locale catalog for specified request and specified locale
+     * @param {Express.Request} request - The request to get locale catalog for
+     * @param {string} locale - The locale to get catalog for
+     * @returns {LocaleCatalog} The specified locale catalog
+     */
+    function getCatalog(request: Express.Request, locale: string): LocaleCatalog;
+
+    /**
+     * Override the current request locale by using the query param (?locale=en)
+     * @param {Express.Request} [request] - The request to override locale for
+     */
+    function overrideLocaleFromQuery(request?: Express.Request): void;
+
+    /**
+     * Get current i18n-node version
+     * @member {string}
+     */
+    var version: string;
+}
+
+interface i18nAPI {
+    locale: string;
+
+    /**
+     * Translate the given phrase using locale configuration
+     * @param {string} phrase - The phrase to translate
+     * @returns {string} The translated phrase
+     */
+    __(phrase: string, ...replace: string[]): string;
+
+    /**
+     * Translate with plural condition the given phrase and count using locale configuration
+     * @param {PluralOptions} options - Options for plural translate
+     * @returns {string} The translated phrase
+     */
+    __n(options: i18n.PluralOptions): string;
+    /**
+     * Translate with plural condition the given phrase and count using locale configuration
+     * @param {string} singular - The singular pharse to translate if count is <= 1
+     * @param {string} plural - The plural pharse to translate if count is > 1
+     * @param {number} count - The number which allow to select from plural to singular
+     * @returns {string} The translated phrase
+     */
+    __n(singular: string, plural: string, count: number): string;
+    /**
+     * Translate with plural condition the given phrase and count using locale configuration
+     * @param {string} singular - The singular pharse to translate if count is <= 1
+     * @param {string} plural - The plural pharse to translate if count is > 1
+     * @param {string} count - The number which allow to select from plural to singular
+     * @returns {string} The translated phrase
+     */
+    __n(singular: string, plural: string, count: string): string;
+
+
+    /**
+     * Get the current active locale
+     * @returns {string} The current locale in request
+     */
+    getLocale(): string;
+    /**
+     * Change the current active locale
+     * @param {string} locale - The locale to set as default
+     */
+    setLocale(locale: string): void;
+
+    /**
+     * Get the current global catalog
+     * @returns {GlobalCatalog} The current global catalog
+     */
+    getCatalog(): i18n.GlobalCatalog;
+    /**
+     * Get the catalog for the given locale
+     * @param {string} locale - The locale to get catalog for
+     * @returns {LocaleCatalog} The specified locale catalog
+     */
+    getCatalog(locale: string): i18n.LocaleCatalog;
+}
+
+declare module "i18n" {
+    export = i18n;
+}
+
+declare module Express {
+    export interface Request extends i18nAPI {
+        languages: string[];
+        regions: string[];
+        language: string;
+        region: string;
+    }
+    export interface Response extends i18nAPI {
+        locals: i18nAPI
+    }
+}