Add integration tests for MCP server and environment variable validation

.env.example

@@ -0,0 +1,5 @@
+# Copy this file to .env and fill in your Imgflip credentials
+# Get your credentials by signing up at https://imgflip.com/signup
+
+IMGFLIP_USERNAME=your_username_here
+IMGFLIP_PASSWORD=your_password_here

.github/workflows/ci.yml

@@ -0,0 +1,66 @@
+name: CI/CD
+
+on:
+  push:
+    branches: [ main, develop ]
+  pull_request:
+    branches: [ main ]
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+
+    strategy:
+      matrix:
+        node-version: [18.x, 20.x, 22.x]
+
+    steps:
+    - uses: actions/checkout@v4
+
+    - name: Use Node.js ${{ matrix.node-version }}
+      uses: actions/setup-node@v4
+      with:
+        node-version: ${{ matrix.node-version }}
+        cache: 'npm'
+
+    - name: Install dependencies
+      run: npm ci
+
+    - name: Run type checking
+      run: npm run type-check
+
+    - name: Run linting
+      run: npm run lint
+
+    - name: Run tests
+      run: npm run test:coverage
+
+    - name: Build
+      run: npm run build
+
+  publish:
+    needs: test
+    runs-on: ubuntu-latest
+    if: github.ref == 'refs/heads/main' && github.event_name == 'push'
+
+    steps:
+    - uses: actions/checkout@v4
+
+    - name: Use Node.js
+      uses: actions/setup-node@v4
+      with:
+        node-version: '20.x'
+        registry-url: 'https://registry.npmjs.org'
+        cache: 'npm'
+
+    - name: Install dependencies
+      run: npm ci
+
+    - name: Build
+      run: npm run build
+
+    - name: Publish to npm (if version changed)
+      run: npm publish --access public
+      env:
+        NODE_AUTH_TOKEN: ${{ secrets.NPM_TOKEN }}
+      continue-on-error: true

.gitignore

@@ -1,3 +1,11 @@
 dist/
 node_modules/
 .DS_Store
+.env
+coverage/
+*.log
+.nyc_output/
+.eslintcache
+
+# Package manager lock files - keep only one
+# yarn.lock  # Uncomment if using Yarn instead of npm

.prettierrc

@@ -0,0 +1,8 @@
+{
+  "semi": true,
+  "trailingComma": "es5",
+  "singleQuote": false,
+  "printWidth": 100,
+  "tabWidth": 2,
+  "useTabs": false
+}

eslint.config.js

@@ -0,0 +1,33 @@
+import js from '@eslint/js';
+import tsParser from '@typescript-eslint/parser';
+import tsPlugin from '@typescript-eslint/eslint-plugin';
+import prettierPlugin from 'eslint-plugin-prettier';
+
+export default [
+  js.configs.recommended,
+  {
+    files: ['src/**/*.ts'],
+    languageOptions: {
+      parser: tsParser,
+      parserOptions: {
+        ecmaVersion: 2022,
+        sourceType: 'module',
+        project: './tsconfig.json'
+      },
+      globals: {
+        node: true,
+        es2022: true
+      }
+    },
+    plugins: {
+      '@typescript-eslint': tsPlugin,
+      prettier: prettierPlugin
+    },
+    rules: {
+      'prettier/prettier': 'error',
+      '@typescript-eslint/no-unused-vars': 'error',
+      '@typescript-eslint/explicit-function-return-type': 'off',
+      '@typescript-eslint/no-explicit-any': 'warn'
+    }
+  }
+];

jest.config.js

@@ -0,0 +1,17 @@
+export default {
+  preset: "ts-jest/presets/default-esm",
+  extensionsToTreatAsEsm: [".ts"],
+  testEnvironment: "node",
+  roots: ["<rootDir>/src", "<rootDir>/tests"],
+  testMatch: ["**/__tests__/**/*.ts", "**/?(*.)+(spec|test).ts"],
+  transform: {
+    "^.+\\.ts$": ["ts-jest", {
+      useESM: true
+    }],
+  },
+  coverageDirectory: "coverage",
+  collectCoverageFrom: [
+    "src/**/*.ts",
+    "!src/**/*.d.ts",
+  ],
+};