feat: add linting (#2)

* feat: add ESLint, addressed issues

* refactor: update GitHub Actions workflow for linting

.github/workflows/quality.yml

@@ -7,24 +7,24 @@ concurrency:
   cancel-in-progress: true
 
 jobs:
-  # lint:
-  #   name: Linting rules
-  #   runs-on: ubuntu-latest
+  lint:
+    name: Linting rules
+    runs-on: ubuntu-latest
 
-  #   steps:
-  #     - name: Checkout
-  #       uses: actions/checkout@v4
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
 
-  #     - name: Setup Node.js
-  #       uses: actions/setup-node@v4
-  #       with:
-  #         node-version-file: .nvmrc
+      - name: Setup Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version-file: .nvmrc
 
-  #     - name: Install dependencies
-  #       run: npm ci
+      - name: Install dependencies
+        run: npm ci
 
-  #     - name: Linting rules
-  #       run: npm run lint
+      - name: Linting rules
+        run: npm run lint
 
   build:
     name: Build

eslint.config.js

@@ -0,0 +1,21 @@
+import js from "@eslint/js";
+import globals from "globals";
+import pluginJs from "@eslint/js";
+import tseslint from "typescript-eslint";
+
+export default [
+  { files: ["**/*.{js,mjs,cjs,ts}"] },
+  { languageOptions: { globals: { ...globals.browser, ...globals.node } } },
+  pluginJs.configs.recommended,
+  js.configs.recommended,
+  ...tseslint.configs.recommendedTypeChecked,
+  ...tseslint.configs.stylisticTypeChecked,
+  {
+    languageOptions: {
+      parserOptions: {
+        projectService: true,
+        tsconfigRootDir: import.meta.dirname,
+      },
+    },
+  },
+];