chore: replace dead airbnb eslint stack with eslint 9 flat config, bump stylelint to 17

.github/dependabot.yml

@@ -9,6 +9,11 @@ updates:
     directory: "/" # Location of package manifests
     schedule:
       interval: "weekly"
+    ignore:
+      # typescript-eslint ^8 declares peer support for eslint ^8.57 || ^9 only.
+      # Drop this once typescript-eslint supports eslint 10.
+      - dependency-name: "eslint"
+        versions: [">=10"]
   - package-ecosystem: "github-actions"
     directory: "/"
     schedule:

eslint.config.mjs

@@ -0,0 +1,34 @@
+import js from '@eslint/js';
+import 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 regexp from 'eslint-plugin-regexp';
+import prettier from 'eslint-config-prettier';
+
+export default tseslint.config(
+  {
+    ignores: [
+      'build/**',
+      '.docusaurus/**',
+      'node_modules/**',
+      'static/**',
+      '.stylelintrc.js',
+    ],
+  },
+  js.configs.recommended,
+  ...tseslint.configs.recommended,
+  react.configs.flat.recommended,
+  react.configs.flat['jsx-runtime'],
+  jsxA11y.flatConfigs.recommended,
+  regexp.configs['flat/recommended'],
+  reactHooks.configs.flat.recommended,
+  prettier,
+  {
+    settings: {
+      react: {
+        version: 'detect',
+      },
+    },
+  }
+);