From 4be9a43d5b97167a9141fe40ad3e113b96a829e0 Mon Sep 17 00:00:00 2001
From: Jacek Wielemborek <git@d33.pl>
Date: Tue, 28 Oct 2025 06:03:25 +0000
Subject: [PATCH] chore: upgrade to Node.js 25 and add fnm support
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- Update package.json to require Node.js >=25
- Add .nvmrc file with Node.js version 25
- Update README.md with Node.js 25 requirements
- Add fnm installation and usage instructions
- Update both English and Polish documentation sections

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>
---
 .nvmrc       |  1 +
 README.md    | 28 ++++++++++++++++++++++++++--
 package.json |  3 +++
 3 files changed, 30 insertions(+), 2 deletions(-)
 create mode 100644 .nvmrc

diff --git a/.nvmrc b/.nvmrc
new file mode 100644
index 0000000..2e3b5f6
--- /dev/null
+++ b/.nvmrc
@@ -0,0 +1 @@
+25
diff --git a/README.md b/README.md
index 982a2f7..1fed11f 100644
--- a/README.md
+++ b/README.md
@@ -21,9 +21,21 @@ Firefox: https://addons.mozilla.org/en-US/firefox/addon/rentgen/
 ### Pre-requirements
 
 -   OS: Linux x86_64
--   Node.js: 16.x version
+-   Node.js: 25.x version (recommended: use [fnm](https://github.com/Schniz/fnm) for automatic version management)
 -   npm: 7.x version or higher
 
+**Using fnm (recommended):**
+
+If you're using fnm, it will automatically use the correct Node.js version specified in `.nvmrc`:
+
+```bash
+# Install fnm (if not already installed)
+curl -fsSL https://fnm.vercel.app/install | bash
+
+# In the project directory, fnm will automatically use Node.js 25
+fnm use
+```
+
 ### Build steps
 
 1. Pull repository or download a zip package
@@ -82,9 +94,21 @@ Firefox: https://addons.mozilla.org/pl/firefox/addon/rentgen/
 ### Wymagania wstępne
 
 -   System operacyjny: Linux x86_64
--   Node.js: 16.x
+-   Node.js: 25.x (zalecane: użyj [fnm](https://github.com/Schniz/fnm) do automatycznego zarządzania wersją)
 -   npm: 7.x lub wyższy
 
+**Używanie fnm (zalecane):**
+
+Jeśli używasz fnm, automatycznie użyje prawidłowej wersji Node.js określonej w `.nvmrc`:
+
+```bash
+# Zainstaluj fnm (jeśli nie jest zainstalowane)
+curl -fsSL https://fnm.vercel.app/install | bash
+
+# W katalogu projektu fnm automatycznie użyje Node.js 25
+fnm use
+```
+
 ### Proces budowy
 
 1. Pobierz repozytorium przez `git pull https://git.internet-czas-dzialac.pl/icd/rentgen.git` lub pobierz archwium zip
diff --git a/package.json b/package.json
index 8766095..c36d187 100644
--- a/package.json
+++ b/package.json
@@ -28,6 +28,9 @@
     "homepage": "https://git.internet-czas-dzialac.pl/icd/rentgen",
     "author": "Kuba Orlik, Arkadiusz Wieczorek",
     "license": "GPL-3.0-or-later",
+    "engines": {
+        "node": ">=25"
+    },
     "dependencies": {
         "@iabtcf/core": "^1.3.1",
         "@types/proposal-relative-indexing-method": "^0.1.0",