diff --git a/.travis.yml b/.travis.yml
index c8d60f2..b97350f 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -4,5 +4,5 @@ node_js:
   - "8.4.0"
 script:
 - npm run lint
-- npm build
+- npm run build
 - npm test
diff --git a/README.md b/README.md
index 1af61be..9e29590 100644
--- a/README.md
+++ b/README.md
@@ -20,14 +20,15 @@ The upcoming 2.0 version has drastically changed API. All available methods can
 
 # Use cases
 
-First of all, require the library:
+First of all, require the library. This is a UMD Module, so it will work for AMD, Typescript and CommonJS module systems.
 
 ```javascript
-const bowser = require('bowser');
+const Bowser = require("bowser"); // CommonJS
+
+import * as Bowser from "bowser" // Typescript
 ```
 
-By default, `require('bowser')` requires the *ES5 version of files*, which
-**do not** include any polyfills.
+By default, the exported version is the *ES5 transpiled version*, which **do not** include any polyfills.
 
 In case you don't use your own `babel-polyfill` you may need to have pre-built bundle with all needed polyfills.
 So, for you it's suitable to require bowser like this: `require('bowser/bundled')`.
@@ -63,6 +64,7 @@ or
 const browser = bowser.getParser(window.navigator.userAgent);
 impression.userTechData = browser.parse();
 console.log(impression.userTechData);
+
 // outputs
 {
   browser: {
diff --git a/index.d.ts b/index.d.ts
new file mode 100644
index 0000000..78108b9
--- /dev/null
+++ b/index.d.ts
@@ -0,0 +1,224 @@
+// Type definitions for Bowser v2
+// Project: https://github.com/lancedikson/bowser
+// Definitions by: Alexander P. Cerutti <https://github.com/alexandercerutti>,
+
+export = Bowser;
+export as namespace Bowser;
+
+declare namespace Bowser {
+
+	/**
+	 * Creates a Parser instance
+	 * @param {string} UA - User agent string
+	 * @param {boolean} skipParsing
+	 */
+
+  function getParser(UA: string, skipParsing?: boolean): Parser.Parser;
+
+	/**
+	 * Creates a Parser instance and runs Parser.getResult immediately
+	 * @param UA - User agent string
+	 * @returns {Parser.ParsedResult}
+	 */
+
+	function parse(UA: string): Parser.ParsedResult;
+}
+
+declare namespace Parser {
+	class Parser {
+    constructor(UA: string, skipParsing?: boolean);
+
+		/**
+		 * Get parsed browser object
+		 * @return {BrowserDetails} Browser's details
+		 */
+
+    getBrowser(): BrowserDetails;
+
+		/**
+		 * Get browser's name
+		 * @return {String} Browser's name or an empty string
+		 */
+
+    getBrowserName(): string;
+
+		/**
+		 * Get browser's version
+		 * @return {String} version of browser
+		 */
+
+    getBrowserVersion(): string;
+
+		/**
+		 * Get OS
+		 * @return {OSDetails} - OS Details
+		 *
+		 * @example
+		 * this.getOS(); // {
+		 * //   name: 'macOS',
+		 * //   version: '10.11.12',
+		 * // }
+		 */
+
+    getOS(): OSDetails;
+
+		/**
+		 * Get OS name
+		 * @param {Boolean} [toLowerCase] return lower-cased value
+		 * @return {String} name of the OS — macOS, Windows, Linux, etc.
+		 */
+
+    getOSName(toLowerCase?: boolean): string;
+
+		/**
+		 * Get OS version
+		 * @return {String} full version with dots ('10.11.12', '5.6', etc)
+		 */
+
+    getOSVersion(): string;
+
+		/**
+		 * Get parsed platform
+		 * @returns {PlatformDetails}
+		 */
+
+    getPlatform(): PlatformDetails;
+
+		/**
+		 * Get platform name
+		 * @param {boolean} toLowerCase
+		 */
+
+    getPlatformType(toLowerCase?: boolean): string;
+
+		/**
+		 * Get parsed engine
+		 * @returns {EngineDetails}
+		 */
+
+    getEngine(): EngineDetails;
+
+		/**
+		 * Get parsed result
+		 * @return {ParsedResult}
+		 */
+
+    getResult(): ParsedResult;
+
+		/**
+		 * Get UserAgent string of current Parser instance
+		 * @return {String} User-Agent String of the current <Parser> object
+		 */
+
+    getUA(): string;
+
+		/**
+		 * Is anything? Check if the browser is called "anything",
+		 * the OS called "anything" or the platform called "anything"
+		 * @param {String} anything
+		 * @returns {Boolean}
+		 */
+
+    is(anything: any): boolean;
+
+		/**
+		 * Parse full information about the browser
+		 */
+
+    parse(): void;
+
+		/**
+		 * Get parsed browser object
+		 * @returns {BrowserDetails}
+		 */
+
+    parseBrowser(): BrowserDetails;
+
+		/**
+		 * Get parsed engine
+		 * @returns {EngineDetails}
+		 */
+
+    parseEngine(): EngineDetails;
+
+		/**
+		 * Parse OS and save it to this.parsedResult.os
+		 * @returns {OSDetails}
+		 */
+
+    parseOS(): OSDetails;
+
+		/**
+		 * Get parsed platform
+		 * @returns {PlatformDetails}
+		 */
+
+    parsePlatform(): PlatformDetails;
+
+		/**
+		 * Check if parsed browser matches certain conditions
+		 *
+		 * @param {checkTree} checkTree It's one or two layered object,
+		 * which can include a platform or an OS on the first layer
+		 * and should have browsers specs on the bottom-laying layer
+		 *
+		 * @returns {Boolean|undefined} Whether the browser satisfies the set conditions or not.
+		 * Returns `undefined` when the browser is no described in the checkTree object.
+		 *
+		 * @example
+		 * const browser = new Bowser(UA);
+		 * if (browser.check({chrome: '>118.01.1322' }))
+		 * // or with os
+		 * if (browser.check({windows: { chrome: '>118.01.1322' } }))
+		 * // or with platforms
+		 * if (browser.check({desktop: { chrome: '>118.01.1322' } }))
+		 */
+
+    satisfies(checkTree: checkTree): boolean | undefined;
+
+		/**
+		 * Check if any of the given values satifies `.is(anything)`
+		 * @param {string[]} anythings
+		 * @returns {boolean} true if at least one condition is satisfied, false otherwise.
+		 */
+
+    some(anythings: string[]): boolean | undefined;
+
+		/**
+		 * Test a UA string for a regexp
+		 * @param regex
+		 * @returns {boolean} true if the regex matches the UA, false otherwise.
+		 */
+
+		test(regex: RegExp): boolean;
+  }
+
+	interface ParsedResult {
+		browser: BrowserDetails;
+		os: OSDetails;
+		platform: PlatformDetails;
+		engine: EngineDetails;
+  }
+
+	interface Details {
+		name?: string;
+		version?: string;
+  }
+
+	interface OSDetails extends Details {
+		versionName?: string;
+  }
+
+	interface PlatformDetails {
+		type?: string;
+		vendor?: string;
+		model?: string;
+  }
+
+	type BrowserDetails = Details;
+	type EngineDetails = Details;
+
+  interface checkTree {
+		[key: string]: any;
+	}
+}
diff --git a/package.json b/package.json
index 3187dab..2b24c07 100644
--- a/package.json
+++ b/package.json
@@ -64,7 +64,7 @@
   },
   "scripts": {
     "build": "webpack --config webpack.config.js",
-    "prepublish": "npm run build",
+    "prepublishOnly": "npm run build",
     "lint": "eslint ./src",
     "testem": "testem",
     "test": "nyc --reporter=html --reporter=text ava",