diff --git a/index.d.ts b/index.d.ts
new file mode 100644
index 00000000..81a38859
--- /dev/null
+++ b/index.d.ts
@@ -0,0 +1,80 @@
+export type MySQLSessionStoreOptions = {
+
+	/** Host name for database connection: */
+	host: string;
+
+	/** Port number for database connection: */
+	port: number;
+
+	/** Database user: */
+	user: string;
+
+	/** Password for the above database user: */
+	password: string;
+
+	/** Database name: */
+	database: string;
+
+
+
+	/** Whether or not to automatically check for and clear expired sessions: */
+	clearExpired?: boolean;
+
+	/** How frequently expired sessions will be cleared; milliseconds: */
+	checkExpirationInterval?: number;
+
+	/** The maximum age of a valid session; milliseconds: */
+	expiration?: number;
+
+	/** Whether or not to create the sessions database table, if one does not already exist: */
+	createDatabaseTable?: boolean;
+
+	/** Number of connections when creating a connection pool: */
+	connectionLimit?: number;
+
+	/** Whether or not to end the database connection when the store is closed.
+	The default value of this option depends on whether or not a connection was passed to the constructor.
+	If a connection object is passed to the constructor, the default value for this option is false. */
+	endConnectionOnClose?: boolean;
+
+	charset?: string;
+
+	schema?: {
+		tableName: string;
+		columnNames: {
+			session_id: string;
+			expires: string;
+			data: string;
+		}
+	}
+}
+
+
+
+export class MySQLStore {
+	constructor(options: MySQLSessionStoreOptions, connection?: any, callback?: (error?: any) => void);
+	constructor(options: Partial<MySQLSessionStoreOptions>, connection: any, callback?: (error?: any) => void);
+
+	setOptions(options: MySQLSessionStoreOptions): any;
+	validateOptions(options: any): boolean;
+	createDatabaseTable(cb: (error?: any) => void): any;
+
+	// Internal functions
+	private query(sql: any, params: any, cb: any): any;
+	private clearExpiredSessions(cb: (error?: any) => void): any;
+	private setExpirationInterval(interval: number): any;
+	private clearExpirationInterval(): any;
+	private close(cb: (error?: any) => void): any;
+
+	// Implemented Store methods
+	get: (sid: string, callback: (err: any, session?: Express.SessionData | null) => void) => void;
+	set: (sid: string, session: Express.SessionData, callback?: (err?: any) => void) => void;
+	destroy: (sid: string, callback?: (err?: any) => void) => void;
+	all: (callback: (err: any, obj?: { [sid: string]: Express.SessionData; } | null) => void) => void;
+	length: (callback: (err: any, length?: number | null) => void) => void;
+	clear: (callback?: (err?: any) => void) => void;
+	touch: (sid: string, session: Express.SessionData, callback?: (err?: any) => void) => void;
+}
+
+
+export default function MySQLStoreFactory(session: any): typeof MySQLStore;
diff --git a/package.json b/package.json
index 86f456a3..1abd6a6c 100644
--- a/package.json
+++ b/package.json
@@ -3,6 +3,7 @@
   "description": "A MySQL session store for express.js",
   "version": "2.1.1",
   "main": "index.js",
+  "types": "index.d.ts",
   "scripts": {
     "benchmarks": "./node_modules/.bin/mocha test/benchmarks/ --recursive --reporter spec --ui bdd",
     "lint": "./node_modules/.bin/eslint --config .eslintrc.js *.js test/**/*.js",