[Feature]Add missing associated user data to the session

CHANGELOG.md

@@ -6,6 +6,9 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/)
 and adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.html).
 
 ## [Unreleased]
+### Added
+
+- Provide user data via Koa Session
 
 ## [3.1.72] - 2020-10-16
 

src/auth/create-oauth-callback.ts

@@ -53,11 +53,17 @@ export default function createOAuthCallback(config: AuthConfig) {
     }
 
     const accessTokenData = await accessTokenResponse.json();
-    const {access_token: accessToken} = accessTokenData;
+    const {
+      access_token: accessToken,
+      associated_user_scope: associatedUserScope,
+      associated_user: associatedUser,
+    } = accessTokenData;
 
     if (ctx.session) {
       ctx.session.shop = shop;
       ctx.session.accessToken = accessToken;
+      ctx.session.associatedUserScope = associatedUserScope;
+      ctx.session.associatedUser = associatedUser;
     }
 
     ctx.state.shopify = {