diff --git a/@type/keycloak-passport/index.d.ts b/@type/keycloak-passport/index.d.ts
new file mode 100644
index 0000000..d554d18
--- /dev/null
+++ b/@type/keycloak-passport/index.d.ts
@@ -0,0 +1,41 @@
+/// <reference types="node"/>
+declare module 'keycloak-passport' {
+    import * as oauth2 from "passport-oauth2";
+
+    export interface StrategyOptions {
+        host: string,
+        realm: string,
+        clientID: string,
+        clientSecret: string,
+        callbackURL: string,
+        authorizationURL: string,
+        tokenURL: string,
+        userInfoURL: string
+        passReqToCallback?: boolean
+    }
+    
+    export interface Profile {
+        keycloakId: string,
+        fullName: string,
+        firstName: string,
+        lastName: string,
+        username: string,
+        email: string,
+        avatar: string,
+        realm: string
+    }
+
+    export type VerifyCallback = (err?: string | Error, user?: any, info?: any) => void;
+
+    export class Strategy extends oauth2.Strategy {
+        constructor(
+            options: StrategyOptions, 
+            verify:(
+                accessToken: string,
+                refreshToken: string,
+                profile: Profile,
+                done: VerifyCallback  
+            )=> void
+            ) 
+        }
+}
\ No newline at end of file
diff --git a/package-lock.json b/package-lock.json
index 55fe9fb..464954a 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,9 +1,102 @@
 {
   "name": "@exlinc/keycloak-passport",
-  "version": "1.0.1",
+  "version": "1.0.2",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
+    "@types/body-parser": {
+      "version": "1.19.0",
+      "resolved": "https://registry.npmjs.org/@types/body-parser/-/body-parser-1.19.0.tgz",
+      "integrity": "sha512-W98JrE0j2K78swW4ukqMleo8R7h/pFETjM2DQ90MF6XK2i4LO4W3gQ71Lt4w3bfm2EvVSyWHplECvB5sK22yFQ==",
+      "requires": {
+        "@types/connect": "*",
+        "@types/node": "*"
+      }
+    },
+    "@types/connect": {
+      "version": "3.4.33",
+      "resolved": "https://registry.npmjs.org/@types/connect/-/connect-3.4.33.tgz",
+      "integrity": "sha512-2+FrkXY4zllzTNfJth7jOqEHC+enpLeGslEhpnTAkg21GkRrWV4SsAtqchtT4YS9/nODBU2/ZfsBY2X4J/dX7A==",
+      "requires": {
+        "@types/node": "*"
+      }
+    },
+    "@types/express": {
+      "version": "4.17.7",
+      "resolved": "https://registry.npmjs.org/@types/express/-/express-4.17.7.tgz",
+      "integrity": "sha512-dCOT5lcmV/uC2J9k0rPafATeeyz+99xTt54ReX11/LObZgfzJqZNcW27zGhYyX+9iSEGXGt5qLPwRSvBZcLvtQ==",
+      "requires": {
+        "@types/body-parser": "*",
+        "@types/express-serve-static-core": "*",
+        "@types/qs": "*",
+        "@types/serve-static": "*"
+      }
+    },
+    "@types/express-serve-static-core": {
+      "version": "4.17.8",
+      "resolved": "https://registry.npmjs.org/@types/express-serve-static-core/-/express-serve-static-core-4.17.8.tgz",
+      "integrity": "sha512-1SJZ+R3Q/7mLkOD9ewCBDYD2k0WyZQtWYqF/2VvoNN2/uhI49J9CDN4OAm+wGMA0DbArA4ef27xl4+JwMtGggw==",
+      "requires": {
+        "@types/node": "*",
+        "@types/qs": "*",
+        "@types/range-parser": "*"
+      }
+    },
+    "@types/mime": {
+      "version": "2.0.2",
+      "resolved": "https://registry.npmjs.org/@types/mime/-/mime-2.0.2.tgz",
+      "integrity": "sha512-4kPlzbljFcsttWEq6aBW0OZe6BDajAmyvr2xknBG92tejQnvdGtT9+kXSZ580DqpxY9qG2xeQVF9Dq0ymUTo5Q=="
+    },
+    "@types/node": {
+      "version": "14.0.23",
+      "resolved": "https://registry.npmjs.org/@types/node/-/node-14.0.23.tgz",
+      "integrity": "sha512-Z4U8yDAl5TFkmYsZdFPdjeMa57NOvnaf1tljHzhouaPEp7LCj2JKkejpI1ODviIAQuW4CcQmxkQ77rnLsOOoKw=="
+    },
+    "@types/oauth": {
+      "version": "0.9.1",
+      "resolved": "https://registry.npmjs.org/@types/oauth/-/oauth-0.9.1.tgz",
+      "integrity": "sha512-a1iY62/a3yhZ7qH7cNUsxoI3U/0Fe9+RnuFrpTKr+0WVOzbKlSLojShCKe20aOD1Sppv+i8Zlq0pLDuTJnwS4A==",
+      "requires": {
+        "@types/node": "*"
+      }
+    },
+    "@types/passport": {
+      "version": "1.0.4",
+      "resolved": "https://registry.npmjs.org/@types/passport/-/passport-1.0.4.tgz",
+      "integrity": "sha512-h5OfAbfBBYSzjeU0GTuuqYEk9McTgWeGQql9g3gUw2/NNCfD7VgExVRYJVVeU13Twn202Mvk9BT0bUrl30sEgA==",
+      "requires": {
+        "@types/express": "*"
+      }
+    },
+    "@types/passport-oauth2": {
+      "version": "1.4.9",
+      "resolved": "https://registry.npmjs.org/@types/passport-oauth2/-/passport-oauth2-1.4.9.tgz",
+      "integrity": "sha512-QP0q+NVQOaIu2r0e10QWkiUA0Ya5mOBHRJN0UrI+LolMLOP1/VN4EVIpJ3xVwFo+xqNFRoFvFwJhBvKnk7kpUA==",
+      "requires": {
+        "@types/express": "*",
+        "@types/oauth": "*",
+        "@types/passport": "*"
+      }
+    },
+    "@types/qs": {
+      "version": "6.9.3",
+      "resolved": "https://registry.npmjs.org/@types/qs/-/qs-6.9.3.tgz",
+      "integrity": "sha512-7s9EQWupR1fTc2pSMtXRQ9w9gLOcrJn+h7HOXw4evxyvVqMi4f+q7d2tnFe3ng3SNHjtK+0EzGMGFUQX4/AQRA=="
+    },
+    "@types/range-parser": {
+      "version": "1.2.3",
+      "resolved": "https://registry.npmjs.org/@types/range-parser/-/range-parser-1.2.3.tgz",
+      "integrity": "sha512-ewFXqrQHlFsgc09MK5jP5iR7vumV/BYayNC6PgJO2LPe8vrnNFyjQjSppfEngITi0qvfKtzFvgKymGheFM9UOA=="
+    },
+    "@types/serve-static": {
+      "version": "1.13.4",
+      "resolved": "https://registry.npmjs.org/@types/serve-static/-/serve-static-1.13.4.tgz",
+      "integrity": "sha512-jTDt0o/YbpNwZbQmE/+2e+lfjJEJJR0I3OFaKQKPWkASkCoW3i6fsUnqudSMcNAfbtmADGu8f4MV4q+GqULmug==",
+      "requires": {
+        "@types/express-serve-static-core": "*",
+        "@types/mime": "*"
+      }
+    },
     "oauth": {
       "version": "0.9.15",
       "resolved": "https://registry.npmjs.org/oauth/-/oauth-0.9.15.tgz",
@@ -25,6 +118,12 @@
       "resolved": "https://registry.npmjs.org/passport-strategy/-/passport-strategy-1.0.0.tgz",
       "integrity": "sha1-tVOaqPwiWj0a0XlHbd8ja0QPUuQ="
     },
+    "typescript": {
+      "version": "3.9.6",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.9.6.tgz",
+      "integrity": "sha512-Pspx3oKAPJtjNwE92YS05HQoY7z2SFyOpHo9MqJor3BXAGNaPUs83CuVp9VISFkSjyRfiTpmKuAYGJB7S7hOxw==",
+      "dev": true
+    },
     "uid2": {
       "version": "0.0.3",
       "resolved": "https://registry.npmjs.org/uid2/-/uid2-0.0.3.tgz",
diff --git a/package.json b/package.json
index a8ddfac..832547d 100644
--- a/package.json
+++ b/package.json
@@ -3,8 +3,10 @@
   "version": "1.0.2",
   "description": "Flexible Keycloak Passport strategy (with multi-realm support) by EXL Inc.",
   "main": "index.js",
+  "types": "@type/keycloak-passport",
   "scripts": {
-    "test": "echo \"Error: no test specified\" && exit 1"
+    "test": "echo \"Error: no test specified\" && exit 1",
+    "build": "tsc"
   },
   "repository": {
     "type": "git",
@@ -23,6 +25,11 @@
   },
   "homepage": "https://github.com/exlinc/keycloak-passport#readme",
   "dependencies": {
+    "@types/node": "^14.0.23",
+    "@types/passport-oauth2": "^1.4.9",
     "passport-oauth2": "^1.4.0"
+  },
+  "devDependencies": {
+    "typescript": "^3.9.6"
   }
-}
\ No newline at end of file
+}
diff --git a/tsconfig.json b/tsconfig.json
new file mode 100644
index 0000000..6803764
--- /dev/null
+++ b/tsconfig.json
@@ -0,0 +1,11 @@
+{
+    "compilerOptions": {
+      "target": "es5",
+      "module": "commonjs",
+      "declaration": true,
+      "outDir": "./dist",
+      "strict": true,
+      "typeRoots" : ["./@type", "./node_modules/@types"]
+    },
+    "exclude": ["node_modules", "@type"]
+  }
\ No newline at end of file