Ensure we don't error out when FastDesignProvider is undefined (#6832)

holoviz · May 14, 2024 · c7af196 · c7af196
1 parent dff4b5d
commit c7af196
Showing 1 changed file with 3 additions and 1 deletion.
diff --git a/panel/theme/fast.py b/panel/theme/fast.py
@@ -146,7 +146,9 @@ class FastWrapper(ReactiveHTML):
     _scripts = {
         'render': """
         let accent, bg, luminance
-        if (window._JUPYTERLAB) {
+        if (!window.fastDesignProvider) {
+          return
+        } else if (window._JUPYTERLAB) {
           accent = getComputedStyle(document.body).getPropertyValue('--jp-brand-color0').trim();
           bg = getComputedStyle(document.body).getPropertyValue('--jp-layout-color0').trim();
           let color = getComputedStyle(document.body).getPropertyValue('--jp-ui-font-color0').trim();