diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..c2658d7
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+node_modules/
diff --git a/eslint.config.mjs b/eslint.config.mjs
new file mode 100644
index 0000000..9eddc53
--- /dev/null
+++ b/eslint.config.mjs
@@ -0,0 +1,15 @@
+import js from "@eslint/js";
+import globals from "globals";
+import json from "@eslint/json";
+import css from "@eslint/css";
+import { defineConfig } from "eslint/config";
+
+
+export default defineConfig([
+  { files: ["**/*.{js,mjs,cjs}"], plugins: { js }, extends: ["js/recommended"] },
+  { files: ["**/*.js"], languageOptions: { sourceType: "script" } },
+  { files: ["**/*.{js,mjs,cjs}"], languageOptions: { globals: globals.browser } },
+  { files: ["**/*.json"], plugins: { json }, language: "json/json", extends: ["json/recommended"] },
+  { files: ["**/*.jsonc"], plugins: { json }, language: "json/jsonc", extends: ["json/recommended"] },
+  { files: ["**/*.css"], plugins: { css }, language: "css/css", extends: ["css/recommended"] },
+]);
diff --git a/material-icons.css b/material-icons.css
index 37e86ab..1a17bb4 100644
--- a/material-icons.css
+++ b/material-icons.css
@@ -19,5 +19,6 @@
     word-wrap: normal;
     direction: ltr;
     -webkit-font-feature-settings: 'liga';
+    font-feature-settings: "liga";
     -webkit-font-smoothing: antialiased;
-}
\ No newline at end of file
+}
diff --git a/package.json b/package.json
index f9b6659..b668411 100644
--- a/package.json
+++ b/package.json
@@ -17,5 +17,12 @@
   "main": "icons.js",
   "scripts": {
     "test": "echo \"Error: no test specified\" && exit 1"
+  "devDependencies": {
+    "jpc-like-websites": "git+https://git.labos.goip.de/chris/jpc-like-websites.git",
+      "@eslint/css": "^0.7.0",
+      "@eslint/js": "^9.26.0",
+      "@eslint/json": "^0.12.0",
+      "eslint": "^9.26.0",
+      "globals": "^16.1.0"
   }
 }