v2 ESlint fixes (modelcontextprotocol#1403)

Co-authored-by: Matt <77928207+mattzcarey@users.noreply.github.com>

Author: KKonstantinov

.github/workflows/conformance.yml

@@ -1,51 +1,51 @@
 name: Conformance Tests
 
 on:
-  push:
-    branches: [main]
-  pull_request:
-  workflow_dispatch:
+    push:
+        branches: [main]
+    pull_request:
+    workflow_dispatch:
 
 concurrency:
-  group: conformance-${{ github.ref }}
-  cancel-in-progress: true
+    group: conformance-${{ github.ref }}
+    cancel-in-progress: true
 
 permissions:
-  contents: read
+    contents: read
 
 jobs:
-  client-conformance:
-    runs-on: ubuntu-latest
-    continue-on-error: true
-    steps:
-      - uses: actions/checkout@v4
-      - name: Install pnpm
-        uses: pnpm/action-setup@v4
-        with:
-          run_install: false
-      - uses: actions/setup-node@v4
-        with:
-          node-version: 24
-          cache: pnpm
-          cache-dependency-path: pnpm-lock.yaml
-      - run: pnpm install
-      - run: pnpm run build:all
-      - run: pnpm run test:conformance:client:all
+    client-conformance:
+        runs-on: ubuntu-latest
+        continue-on-error: true
+        steps:
+            - uses: actions/checkout@v4
+            - name: Install pnpm
+              uses: pnpm/action-setup@v4
+              with:
+                  run_install: false
+            - uses: actions/setup-node@v4
+              with:
+                  node-version: 24
+                  cache: pnpm
+                  cache-dependency-path: pnpm-lock.yaml
+            - run: pnpm install
+            - run: pnpm run build:all
+            - run: pnpm run test:conformance:client:all
 
-  server-conformance:
-    runs-on: ubuntu-latest
-    continue-on-error: true
-    steps:
-      - uses: actions/checkout@v4
-      - name: Install pnpm
-        uses: pnpm/action-setup@v4
-        with:
-          run_install: false
-      - uses: actions/setup-node@v4
-        with:
-          node-version: 24
-          cache: pnpm
-          cache-dependency-path: pnpm-lock.yaml
-      - run: pnpm install
-      - run: pnpm run build:all
-      - run: pnpm run test:conformance:server
+    server-conformance:
+        runs-on: ubuntu-latest
+        continue-on-error: true
+        steps:
+            - uses: actions/checkout@v4
+            - name: Install pnpm
+              uses: pnpm/action-setup@v4
+              with:
+                  run_install: false
+            - uses: actions/setup-node@v4
+              with:
+                  node-version: 24
+                  cache: pnpm
+                  cache-dependency-path: pnpm-lock.yaml
+            - run: pnpm install
+            - run: pnpm run build:all
+            - run: pnpm run test:conformance:server

CONTRIBUTING.md

@@ -63,7 +63,8 @@ This repository has two main branches:
 
 Small PRs get reviewed fast. Large PRs sit in the queue.
 
-We can review a few dozen lines in a few minutes. But a PR touching hundreds of lines across many files takes real effort to verify—and things inevitably slip through. If your change is big, break it into a stack of smaller PRs or get clear alignment from a maintainer on your approach in an issue before submitting a large PR.
+We can review a few dozen lines in a few minutes. But a PR touching hundreds of lines across many files takes real effort to verify—and things inevitably slip through. If your change is big, break it into a stack of smaller PRs or get clear alignment from a maintainer on your
+approach in an issue before submitting a large PR.
 
 ### What Gets Rejected
 
@@ -183,6 +184,4 @@ Please review our [Security Policy](SECURITY.md) for reporting security vulnerab
 
 ### License
 
-By contributing, you agree that your code contributions will be licensed under
-the Apache License 2.0. Documentation contributions (excluding specifications)
-are licensed under CC-BY 4.0. See the [LICENSE](LICENSE) file for details.
+By contributing, you agree that your code contributions will be licensed under the Apache License 2.0. Documentation contributions (excluding specifications) are licensed under CC-BY 4.0. See the [LICENSE](LICENSE) file for details.

README.md

@@ -1,7 +1,6 @@
 # MCP TypeScript SDK
 
-> [!IMPORTANT]
-> **This is the `main` branch which contains v2 of the SDK (currently in development, pre-alpha).**
+> [!IMPORTANT] **This is the `main` branch which contains v2 of the SDK (currently in development, pre-alpha).**
 >
 > We anticipate a stable v2 release in Q1 2026. Until then, **v1.x remains the recommended version** for production use. v1.x will continue to receive bug fixes and security updates for at least 6 months after v2 ships to give people time to upgrade.
 >

common/eslint-config/eslint.config.mjs

@@ -8,6 +8,7 @@ import eslintConfigPrettier from 'eslint-config-prettier/flat';
 import importPlugin from 'eslint-plugin-import';
 import nodePlugin from 'eslint-plugin-n';
 import simpleImportSortPlugin from 'eslint-plugin-simple-import-sort';
+import eslintPluginUnicorn from 'eslint-plugin-unicorn';
 import { configs } from 'typescript-eslint';
 
 const __dirname = path.dirname(fileURLToPath(import.meta.url));
@@ -17,6 +18,7 @@ export default defineConfig(
     ...configs.recommended,
     importPlugin.flatConfigs.recommended,
     importPlugin.flatConfigs.typescript,
+    eslintPluginUnicorn.configs.recommended,
     {
         languageOptions: {
             parserOptions: {
@@ -42,6 +44,10 @@ export default defineConfig(
             }
         },
         rules: {
+            'unicorn/prevent-abbreviations': 'off',
+            'unicorn/no-null': 'off',
+            'unicorn/prefer-add-event-listener': 'off',
+            'unicorn/no-useless-undefined': ['error', { checkArguments: false }],
             '@typescript-eslint/no-unused-vars': ['error', { argsIgnorePattern: '^_' }],
             'n/prefer-node-protocol': 'error',
             '@typescript-eslint/consistent-type-imports': ['error', { disallowTypeAnnotations: false }],
@@ -64,6 +70,12 @@ export default defineConfig(
                     optionalDependencies: false,
                     peerDependencies: true
                 }
+            ],
+            'unicorn/filename-case': [
+                'error',
+                {
+                    case: 'camelCase'
+                }
             ]
         }
     },

common/eslint-config/package.json

@@ -29,6 +29,7 @@
         "eslint-plugin-import": "^2.32.0",
         "eslint-plugin-n": "catalog:devTools",
         "eslint-plugin-simple-import-sort": "^12.1.1",
+        "eslint-plugin-unicorn": "^62.0.0",
         "prettier": "catalog:devTools",
         "typescript": "catalog:devTools",
         "typescript-eslint": "catalog:devTools"

common/vitest-config/vitest.config.js

@@ -14,7 +14,7 @@ export default defineConfig({
         exclude: ignorePatterns,
         deps: {
             moduleDirectories: ['node_modules', path.resolve(__dirname, '../../packages'), path.resolve(__dirname, '../../common')]
-        },
+        }
     },
     poolOptions: {
         threads: {