Many changes

.vscode/settings.json

@@ -0,0 +1,4 @@
+{
+    "eslint.experimental.useFlatConfig": true,
+    "eslint.options": { "overrideConfigFile": "./config/eslint.config.mjs" },
+}

LICENSE.txt

@@ -0,0 +1,202 @@
+
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config/eslint.config.mjs

@@ -1,22 +1,29 @@
 import { FlatCompat } from '@eslint/eslintrc';
 import globals from 'globals';
-import path from 'path';
+import {dirname } from 'path';
 import { fileURLToPath } from 'url';
 import js from '@eslint/js';
 
 // mimic CommonJS variables -- not needed if using CommonJS
-const filename = fileURLToPath(import.meta.url);
-const dirname = path.dirname(filename);
+const _filename = fileURLToPath(import.meta.url);
+const _dirname = dirname(_filename);
 const compat = new FlatCompat({
-  baseDirectory: dirname,
+  baseDirectory: _dirname,
 });
 
 export default [
   js.configs.recommended,
   {
     languageOptions: {
       globals: globals.browser,
+      ecmaVersion: 'latest',
+      sourceType: 'module',
     },
   },
   ...compat.extends('airbnb-base'),
-];
+  {
+    rules: {
+      'import/prefer-default-export': 'off',
+    },
+  }
+];

package.json

@@ -34,6 +34,7 @@
   },
   "dependencies": {
     "bootstrap-icons": "^1.11.3",
+    "highlight.js": "^11.9.0",
     "lit": "^3.1.2"
   },
   "files": [