Provide better gjs/gts config support for eslint 9

Author: NullVoxPopuli

eslint.config.js

@@ -235,4 +235,20 @@ module.exports = [
       'unicorn/filename-case': 'off',
     },
   },
+  {
+    files: ['**/*.mjs'],
+    languageOptions: {
+      parser: babelEslintParser,
+      parserOptions: {
+        ecmaFeatures: { modules: true },
+        ecmaVersion: 2022,
+        babelOptions: {
+          configFile: require.resolve('./.babelrc'),
+        },
+      },
+    },
+    rules: {
+      'import/extensions': ['error', 'ignorePackages'],
+    },
+  },
 ];

lib/config.mjs

@@ -0,0 +1,28 @@
+import plugin from './index.js';
+import gjsRules from './recommended-rules-gjs.js';
+import gtsRules from './recommended-rules-gts.js';
+import parser from 'ember-eslint-parser';
+
+export const base = {
+  plugins: { ember: plugin },
+};
+
+export const gjs = {
+  plugins: { ember: plugin },
+  files: ['**/*.gjs'],
+  languageOptions: {
+    parser,
+  },
+  processor: 'ember/noop',
+  rules: gjsRules,
+};
+
+export const gts = {
+  plugins: { ember: plugin },
+  files: ['**/*.gts'],
+  languageOptions: {
+    parser,
+  },
+  processor: 'ember/noop',
+  rules: gtsRules,
+};

package.json

@@ -23,6 +23,9 @@
   "license": "MIT",
   "exports": {
     ".": "./lib/index.js",
+    "./config": {
+      "import": "./lib/config.mjs"
+    },
     "./configs/*": "./lib/config/*.js"
   },
   "main": "./lib/index.js",