Update eslint to v9

eslint.config.mjs

@@ -0,0 +1,53 @@
+import importX from 'eslint-plugin-import-x';
+import jsdoc from 'eslint-plugin-jsdoc';
+import regexp from 'eslint-plugin-regexp';
+import neostandard, { plugins as neostdplugins } from 'neostandard';
+import globals from 'globals';
+
+export default [
+  {
+    ignores: ['src/lib', 'src/web-ext-config.cjs']
+  },
+  jsdoc.configs['flat/recommended'],
+  regexp.configs['flat/recommended'],
+  ...neostandard({
+    semi: true
+  }),
+  {
+    plugins: {
+      '@stylistic': neostdplugins['@stylistic'],
+      'import-x': importX,
+      regexp
+    },
+    linterOptions: {
+      reportUnusedDisableDirectives: true
+    },
+    languageOptions: {
+      globals: {
+        ...globals.node
+      },
+      ecmaVersion: 'latest',
+      sourceType: 'module'
+    },
+    rules: {
+      '@stylistic/space-before-function-paren': ['error', {
+        anonymous: 'always',
+        asyncArrow: 'always',
+        named: 'never'
+      }],
+      'import-x/order': ['error', {
+        alphabetize: {
+          order: 'ignore',
+          caseInsensitive: false
+        }
+      }],
+      'no-await-in-loop': 'error',
+      'no-use-before-define': ['error', {
+        allowNamedExports: false,
+        classes: true,
+        functions: true,
+        variables: true
+      }]
+    }
+  }
+];

package.json

@@ -13,15 +13,16 @@
   "main": "index.js",
   "types": "types/index.d.ts",
   "devDependencies": {
-    "c8": "^9.1.0",
+    "c8": "^10.1.2",
     "chai": "^5.1.1",
-    "eslint": "^8.57.0",
-    "eslint-config-standard": "^17.1.0",
-    "eslint-plugin-import": "^2.29.1",
-    "eslint-plugin-jsdoc": "^48.2.7",
+    "eslint": "^9.11.1",
+    "eslint-plugin-import-x": "^4.3.0",
+    "eslint-plugin-jsdoc": "^50.3.0",
     "eslint-plugin-regexp": "^2.6.0",
-    "mocha": "^10.4.0",
-    "typescript": "^5.4.5"
+    "globals": "^15.9.0",
+    "mocha": "^10.7.3",
+    "neostandard": "^0.11.6",
+    "typescript": "^5.6.2"
   },
   "scripts": {
     "build": "npm run tsc && npm run lint && npm run test",