diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
new file mode 100644
index 0000000..1804ab6
--- /dev/null
+++ b/.github/workflows/ci.yml
@@ -0,0 +1,41 @@
+name: CI
+
+on: [push, pull_request]
+
+permissions:
+  contents: read
+
+jobs:
+  lint:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+
+      - name: Set up Node.js
+        uses: actions/setup-node@v3
+
+      - name: Install Dependency
+        run: yarn install
+
+      - name: Run Lint
+        run: yarn run lint
+
+  test:
+    needs: [lint]
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        node: ['18', '20']
+    steps:
+      - uses: actions/checkout@v2
+
+      - name: Set up Node.js
+        uses: actions/setup-node@v3
+        with:
+          node-version: ${{ matrix.node }}
+
+      - name: Install Dependency
+        run: yarn install
+
+      - name: Run Unit test
+        run: yarn run test
diff --git a/.github/workflows/default.yml b/.github/workflows/default.yml
deleted file mode 100644
index 66f3e6a..0000000
--- a/.github/workflows/default.yml
+++ /dev/null
@@ -1,17 +0,0 @@
-name: Default
-
-on:
-  push:
-    branches:
-      - master
-  pull_request:
-
-jobs:
-  test:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v2
-      - name: Install Dependencies
-        run: yarn install
-      - name: Run test
-        run: yarn test
diff --git a/README.md b/README.md
index 6644b74..debbb24 100644
--- a/README.md
+++ b/README.md
@@ -1,26 +1,24 @@
-# session-role-manager
+# Session Role Manager
 
+[![CI](https://github.com/node-casbin/session-role-manager/actions/workflows/ci.yml/badge.svg)](https://github.com/node-casbin/session-role-manager/actions/workflows/ci.yml)
 [![NPM version][npm-image]][npm-url]
 [![NPM download][download-image]][download-url]
-[![Release](https://img.shields.io/github/release/node-casbin/session-role-manager.svg)](https://github.com/node-casbin/session-role-manager/releases)
+[![Discord](https://img.shields.io/discord/1022748306096537660?logo=discord&label=discord&color=5865F2)](https://discord.gg/S5UjpzGZjN)
 
 [npm-image]: https://img.shields.io/npm/v/session-role-manager.svg?style=flat-square
-[npm-url]: https://npmjs.org/package/session-role-manager
+[npm-url]: https://npmjs.com/package/session-role-manager
 [download-image]: https://img.shields.io/npm/dm/session-role-manager.svg?style=flat-square
-[download-url]: https://npmjs.org/package/session-role-manager
+[download-url]: https://npmjs.com/package/session-role-manager
 
-Session Role Manager is the Session-based role manager for node-casbin. With this library, node-casbin can load session-based role hierarchy (user-role mapping) from Casbin policy or save role hierarchy to it. The session is only active in the specified time range.
+Session Role Manager is the Session-based role manager for [Node-Casbin](https://github.com/casbin/node-casbin). With this library, Node-Casbin can load session-based role hierarchy (user-role mapping) from Casbin policy or save role hierarchy to it. The session is only active in the specified time range.
 
 ## Installation
 
-```shell script
-# Yarn
-yarn add session-role-manager
-# NPM
-npm install session-role-manager --save
+```
+npm install session-role-manager
 ```
 
-## Example
+## Simple Example
 
 ```typescript
 import { newEnforcer } from 'casbin';
diff --git a/jest.config.js b/jest.config.js
index 095740e..9e77df5 100644
--- a/jest.config.js
+++ b/jest.config.js
@@ -4,4 +4,7 @@ module.exports = {
     '^.+\\.(ts|tsx)$': 'ts-jest',
   },
   moduleFileExtensions: ['ts', 'tsx', 'js', 'jsx', 'json'],
+  moduleNameMapper: {
+    '^csv-parse/sync$': '<rootDir>/node_modules/csv-parse/dist/cjs/sync.cjs',
+  },
 };
diff --git a/package.json b/package.json
index 240fcd8..296194d 100644
--- a/package.json
+++ b/package.json
@@ -8,7 +8,9 @@
     "prepack": "yarn test && yarn build",
     "postpack": "rimraf lib",
     "build": "rimraf lib && tsc",
-    "test": "jest"
+    "test": "jest",
+    "lint": "prettier --check .",
+    "fix": "prettier --write ."
   },
   "files": [
     "examples",
diff --git a/src/roleManager.ts b/src/roleManager.ts
index feb7209..18953a6 100644
--- a/src/roleManager.ts
+++ b/src/roleManager.ts
@@ -125,4 +125,16 @@ export class SessionRoleManager implements RoleManager {
       logPrint(item.toString());
     }
   }
+
+  // getDomains gets domains that a user has.
+  public async getDomains(name: string): Promise<string[]> {
+    // This role manager does not support domains.
+    return [];
+  }
+
+  // getAllDomains gets all domains.
+  public async getAllDomains(): Promise<string[]> {
+    // This role manager does not support domains.
+    return [];
+  }
 }