diff --git a/index.d.ts b/index.d.ts
new file mode 100644
index 00000000..196708f9
--- /dev/null
+++ b/index.d.ts
@@ -0,0 +1,44 @@
+export interface BaseAuthConfiguration {
+  issuer: string;
+  clientId: string;
+}
+export interface AuthConfiguration extends BaseAuthConfiguration {
+  scopes: string[];
+  redirectUrl: string;
+  additionalParameters?: { [name: string]: string };
+}
+
+export interface RevokeConfiguration {
+  clientId: string;
+  issuer: string;
+}
+
+export interface AuthorizeResult {
+  accessToken: string;
+  accessTokenExpirationDate: string;
+  additionalParameters?: { [name: string]: string };
+  idToken: string;
+  refreshToken: string;
+  tokenType: string;
+}
+
+export interface RevokeConfiguration {
+  tokenToRevoke: string;
+  sendClientId?: boolean;
+}
+
+export interface RefreshConfiguration {
+  refreshToken: string;
+}
+
+export function authorize(config: AuthConfiguration): Promise<AuthorizeResult>;
+
+export function refresh(
+  config: AuthConfiguration,
+  refreshConfig: RefreshConfiguration
+): Promise<AuthorizeResult>;
+
+export function revoke(
+  config: BaseAuthConfiguration,
+  revokeConfig: RevokeConfiguration
+): Promise<void>;
diff --git a/package.json b/package.json
index b97954e2..7b5115c8 100644
--- a/package.json
+++ b/package.json
@@ -3,6 +3,7 @@
   "version": "2.0.0",
   "description": "React Native bridge for AppAuth for supporting any OAuth 2 provider",
   "main": "index.js",
+  "types": "index.d.ts",
   "scripts": {
     "test": "jest",
     "lint": "eslint .",
@@ -12,6 +13,10 @@
     "*.js": [
       "eslint --fix",
       "git add"
+    ],
+    "*.ts": [
+      "prettier --write",
+      "git add"
     ]
   },
   "files": [