add types for typescript's projects

package.json

@@ -2,6 +2,7 @@
   "name": "lokka",
   "version": "1.7.0",
   "description": "Simple JavaScript client for GraphQL",
+  "types": "types.d.ts",
   "repository": {
     "type": "git",
     "url": "https://github.com/kadirahq/lokka.git"
@@ -42,4 +43,4 @@
     "babel-runtime": "6.x.x",
     "uuid": "2.x.x"
   }
-}
+}

types.d.ts

@@ -0,0 +1,38 @@
+declare namespace Lokka {
+    export type QL = string;
+    export interface ITransport {
+        send(rawQuery: string, variables: { [index: string]: any }, operationName: string);
+    }
+    export interface IConfig {
+        transport: ITransport;
+    }
+    export interface IVars { [index: string]: any }
+    export type IFragment = string;
+    export interface IWatchHandler<T> {
+        (err, payload: T): any;
+    }
+    export interface IStop {
+        (): void;
+    }
+    export interface ICacheConfig {
+        cacheExpirationTimeout?: number;
+    }
+    export interface ICache {
+        getItemPayload<T>(query: QL, vars?: IVars): T;
+        setItemPayload<T>(query: QL, vars: IVars, payload: T): void;
+        fireError(query: QL, vars: IVars, error): void;
+        removeItem(query: QL, vars?: IVars): void;
+        getItem<T>(query: QL, vars?: IVars): T;
+    }
+    export class Lokka {
+        constructor(config: IConfig);
+        query<T>(query: QL, vars?: IVars): Promise<T>;
+        mutate<T>(query: QL, vars?: IVars): Promise<T>;
+        watchQuery<T>(query: QL, handler?: IWatchHandler<T>): IStop;
+        watchQuery<T>(query: QL, vars?: IVars, handler?: IWatchHandler<T>): IStop;
+        createFragment(fragment: QL): IFragment;
+        refetchQuery(query: QL, vars?: IVars): void;
+        cache: ICache;
+    }
+}
+export = Lokka