Check if Node.js is installed and present in PATH

pio-scripts/build_ui.py

@@ -1,3 +1,21 @@
-Import('env')
+Import("env")
+import shutil
 
-env.Execute("npm run build")
+node_ex = shutil.which("node")
+# Check if Node.js is installed and present in PATH if it failed, abort the build
+if node_ex is None:
+    print('\x1b[0;31;43m' + 'Node.js is not installed or missing from PATH html css js will not be processed check https://kno.wled.ge/advanced/compiling-wled/' + '\x1b[0m')
+    exitCode = env.Execute("null")
+    exit(exitCode)
+else:
+    # Install the necessary node packages for the pre-build asset bundling script
+    print('\x1b[6;33;42m' + 'Installing node packages' + '\x1b[0m')
+    env.Execute("npm install")
+
+    # Call the bundling script
+    exitCode = env.Execute("npm run build")
+
+    # If it failed, abort the build
+    if (exitCode):
+      print('\x1b[0;31;43m' + 'npm run build fails check https://kno.wled.ge/advanced/compiling-wled/' + '\x1b[0m')
+      exit(exitCode)