chore: Eslint Update (#572)

Author: LadyBluenotes

.eslintrc

@@ -0,0 +1,67 @@
+import js from '@eslint/js'
+import * as tseslint from 'typescript-eslint'
+import react from 'eslint-plugin-react'
+import reactHooks from 'eslint-plugin-react-hooks'
+import jsxA11y from 'eslint-plugin-jsx-a11y'
+import path from 'node:path'
+import { fileURLToPath } from 'node:url'
+
+const __filename = fileURLToPath(import.meta.url)
+const __dirname = path.dirname(__filename)
+
+const ignores = [
+  'node_modules',
+  'dist',
+  'build',
+  '.content-collections',
+  '.tanstack-start',
+  '.netlify',
+  'public',
+  'convex/.temp',
+]
+
+export default [
+  { ignores },
+  {
+    files: ['**/*.{js,jsx}'],
+    ...js.configs.recommended,
+  },
+  ...tseslint.configs.recommended,
+  {
+    files: ['**/*.{ts,tsx}'],
+    languageOptions: {
+      parserOptions: {
+        tsconfigRootDir: __dirname,
+      },
+    },
+    rules: {
+      '@typescript-eslint/no-unused-vars': [
+        'warn',
+        {
+          argsIgnorePattern: '(^_)|(^__+$)|(^e$)|(^error$)',
+          varsIgnorePattern: '(^_)|(^__+$)|(^e$)|(^error$)',
+          caughtErrorsIgnorePattern: '(^_)|(^__+$)|(^e$)|(^error$)',
+        },
+      ],
+      'no-redeclare': 'off',
+      '@typescript-eslint/no-redeclare': 'error',
+      'no-shadow': 'off',
+      '@typescript-eslint/no-explicit-any': 'off',
+    },
+  },
+  {
+    files: ['**/*.{ts,tsx,js,jsx}'],
+    plugins: {
+      react,
+      'react-hooks': reactHooks,
+      'jsx-a11y': jsxA11y,
+    },
+    settings: {
+      react: { version: 'detect' },
+    },
+    rules: {
+      ...reactHooks.configs.recommended.rules,
+      ...jsxA11y.configs.recommended.rules,
+    },
+  },
+]

eslint.config.mjs

@@ -49,7 +49,6 @@
     "@tanstack/react-start": "1.139.12",
     "@tanstack/react-table": "^8.21.3",
     "@types/d3": "^7.4.3",
-    "@typescript-eslint/parser": "^7.2.0",
     "@visx/hierarchy": "^2.10.0",
     "@visx/responsive": "^2.10.0",
     "@vitejs/plugin-react": "^4.3.3",
@@ -62,12 +61,11 @@
     "date-fns": "^2.30.0",
     "downshift": "^9.0.9",
     "drizzle-orm": "^0.44.7",
-    "eslint-config-react-app": "^7.0.1",
+    "eslint-plugin-jsx-a11y": "^6.10.2",
     "gray-matter": "^4.0.3",
     "hast-util-is-element": "^3.0.0",
     "hast-util-to-string": "^3.0.1",
     "html-react-parser": "^5.1.10",
-    "import-meta-resolve": "^4.0.0",
     "lru-cache": "^7.13.1",
     "mermaid": "^11.11.0",
     "postgres": "^3.4.7",
@@ -102,6 +100,7 @@
   "devDependencies": {
     "@content-collections/core": "^0.8.2",
     "@content-collections/vite": "^0.2.4",
+    "@eslint/js": "^9.39.1",
     "@shikijs/transformers": "^1.10.3",
     "@types/node": "^24.3.0",
     "@types/pg": "^8.15.6",
@@ -111,14 +110,17 @@
     "autoprefixer": "^10.4.18",
     "dotenv-cli": "^8.0.0",
     "drizzle-kit": "^0.31.7",
-    "eslint": "^8.57.0",
-    "eslint-plugin-unicorn": "^49.0.0",
+    "eslint": "^9.39.1",
+    "eslint-plugin-jsx-a11y": "^6.10.0",
+    "eslint-plugin-react": "^7.37.5",
+    "eslint-plugin-react-hooks": "^7.0.1",
     "npm-run-all": "^4.1.5",
     "postcss": "^8.4.35",
     "prettier": "^3.7.4",
     "tailwindcss": "^4.1.11",
     "tsx": "^4.21.0",
     "typescript": "^5.6.3",
+    "typescript-eslint": "^8.48.1",
     "vite": "^7.0.0"
   },
   "engines": {