trying out type definition

package.json

@@ -3,6 +3,7 @@
   "version": "0.8.4",
   "description": "Lightweight DynamoDB ODM",
   "main": "dist/ddb.js",
+  "types": "types/index.d.ts",
   "scripts": {
     "bundle": "webpack",
     "clean": "rm -fR dist",

types/index.d.ts

@@ -0,0 +1,13 @@
+declare namespace DDB {
+  class Document {
+    toObject(): Object;
+    toJSON(): String;
+    pKey(): Object;
+    sKey(): Object;
+  }
+  class Schema {
+    constructor(fields: Object, pKey: Object, sKey: Object): void;
+  }
+  declare function db(op: String, params: Object): Promise;
+  declare function model(name: String, schema: Schema): Document;
+}