feat: add eslint9 config files

eslint9/browser-config.mjs

@@ -0,0 +1,29 @@
+import parser from '@babel/eslint-parser';
+import globals from 'globals';
+
+import index from './index.mjs';
+import oldConfig from '../browser-config.js';
+import html from 'eslint-plugin-html';
+import importPlugin from 'eslint-plugin-import';
+import sortClassMembersPlugin from 'eslint-plugin-sort-class-members';
+
+export default [
+	...index,
+	{
+		plugins: {
+			html,
+			'import': importPlugin,
+			'sort-class-members': sortClassMembersPlugin
+		},
+		languageOptions: {
+			parser,
+			parserOptions: oldConfig.parserOptions,
+			globals: {
+				...globals.browser,
+				...oldConfig.globals
+			},
+		},
+
+		'rules': oldConfig.rules
+	}
+];

eslint9/index.mjs

@@ -0,0 +1,6 @@
+import js from '@eslint/js';
+import oldConfig from '../index.js';
+
+export default [js.configs.recommended, {
+    rules: oldConfig.rules,
+}];

eslint9/lit-config.mjs

@@ -0,0 +1,11 @@
+import browserConfig from './browser-config.mjs';
+import oldConfig from '../lit-config.js';
+import lit from "eslint-plugin-lit"
+export default [
+	...browserConfig,
+	{
+		plugins: {lit}
+	},
+	{ rules:oldConfig.rules },
+	...oldConfig["overrides"].map(c => ({...c, files:[c.files]}))
+];

eslint9/node-config.mjs

@@ -0,0 +1,17 @@
+import globals from 'globals';
+
+import index from './index.mjs';
+import oldConfig from '../node-config.js';
+export default [
+	...index,
+	{
+		'languageOptions': {
+			'parserOptions': oldConfig.parserOptions,
+			'globals': {
+				...globals.node,
+				...globals.es2024
+			},
+		},
+		'rules': oldConfig.rules
+	}
+];

eslint9/react-config.mjs

@@ -0,0 +1,22 @@
+import globals from 'globals';
+
+import index from './index.mjs';
+import oldConfig from '../react-config.js';
+import react from 'eslint-plugin-react'
+
+export default [
+	...index,
+	{
+		'languageOptions': {
+			'parserOptions': oldConfig.parserOptions,
+			'globals': {
+				...globals.browser,
+				...globals.es2015,
+				...globals.jest,
+				...globals.node,
+			},
+			'ecmaVersion': 6,
+		},
+		'plugins': {react}
+	}
+];

eslint9/testing-config.mjs

@@ -0,0 +1,16 @@
+import globals from 'globals';
+
+import litConfig from './lit-config.mjs';
+import oldConfig from '../testing-config.js';
+
+export default [
+	...litConfig,
+	{
+		'languageOptions': {
+			'globals': {
+				...globals.mocha,
+			}
+		},
+		'rules': oldConfig.rules
+	}
+];