util: gracefully handle unknown colors

This makes sure colors that are unknown won't cause an error. This
is especially important in case a library wants to use colors
defined by Node.js core, if available and fall back to the default
otherwise.

Signed-off-by: Ruben Bridgewater <ruben@bridgewater.de>

PR-URL: https://github.com/nodejs/node/pull/33797
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Evan Lucas <evanlucas@me.com>
Reviewed-By: Yongsheng Zhang <zyszys98@gmail.com>
Reviewed-By: Trivikram Kamat <trivikr.dev@gmail.com>

1 files changed, 2 insertions, 1 deletions

diff --git a/lib/internal/util/inspect.js b/lib/internal/util/inspect.js
index 07e0f658e28..012f358e2ac 100644
--- a/lib/internal/util/inspect.js
+++ b/lib/internal/util/inspect.js
@@ -508,7 +508,8 @@ function stylizeWithColor(str, styleType) {
   const style = inspect.styles[styleType];
   if (style !== undefined) {
     const color = inspect.colors[style];
-    return `\u001b[${color[0]}m${str}\u001b[${color[1]}m`;
+    if (color !== undefined)
+      return `\u001b[${color[0]}m${str}\u001b[${color[1]}m`;
   }
   return str;
 }