chore: add ESLint tooling with TypeScript support

.github/workflows/ci.yml

@@ -20,6 +20,9 @@ jobs:
       - name: Install dependencies
         run: pnpm install
 
+      - name: Lint
+        run: pnpm lint
+
       - name: Build core
         run: pnpm --filter @understand-anything/core build
 

eslint.config.mjs

@@ -0,0 +1,56 @@
+import eslint from '@eslint/js';
+import tseslint from 'typescript-eslint';
+import globals from 'globals';
+
+export default tseslint.config(
+  {
+    ignores: [
+      '**/node_modules/**',
+      '**/dist/**',
+      '**/build/**',
+      '**/public/**',
+      '**/coverage/**',
+      '**/.understand-anything/**',
+      '**/.claude-plugin/**',
+      '**/.cursor-plugin/**',
+      '**/.copilot-plugin/**',
+      '**/.astro/**',
+      '.private/**',
+    ],
+  },
+  eslint.configs.recommended,
+  ...tseslint.configs.recommended,
+  {
+    languageOptions: {
+      globals: {
+        ...globals.node,
+      },
+    },
+    rules: {
+      '@typescript-eslint/no-unused-vars': [
+        'error',
+        {
+          argsIgnorePattern: '^_',
+          varsIgnorePattern: '^_',
+          caughtErrorsIgnorePattern: '^_',
+          destructuredArrayIgnorePattern: '^_',
+        },
+      ],
+      'no-irregular-whitespace': ['error', { skipComments: true }],
+    },
+  },
+  {
+    files: ['understand-anything-plugin/packages/dashboard/**/*.{ts,tsx,js,jsx}'],
+    languageOptions: {
+      globals: {
+        ...globals.browser,
+      },
+    },
+  },
+  {
+    files: ['**/*.test.ts', '**/*.test.tsx', '**/*.test.mjs', '**/__tests__/**/*.{ts,tsx,mjs}'],
+    rules: {
+      '@typescript-eslint/no-explicit-any': 'off',
+    },
+  },
+);

package.json

@@ -12,7 +12,11 @@
     "lint": "eslint ."
   },
   "devDependencies": {
+    "@eslint/js": "^9.0.0",
+    "eslint": "^9.0.0",
+    "globals": "^17.6.0",
     "typescript": "^5.7.0",
+    "typescript-eslint": "^8.0.0",
     "vitest": "^3.1.0"
   },
   "pnpm": {