errors: skip fatal error highlighting on windows

Some consoles do not convert ANSI escape sequences to colors, rather display them directly to the stdout. On those consoles, libuv emulates colors by intercepting stdout stream and calling corresponding Windows API functions for setting console colors. However, fatal error are handled differently and we cannot easily highlight them. PR-URL: #33132 Reviewed-By: Colin Ihrig <[email protected]> Reviewed-By: Ruben Bridgewater <[email protected]>
nodejs · Jun 2, 2020 · aca07f4 · aca07f4
1 parent 762adc9
commit aca07f4
Showing 1 changed file with 18 additions and 2 deletions.
diff --git a/lib/internal/errors.js b/lib/internal/errors.js
@@ -674,15 +674,31 @@ const fatalExceptionStackEnhancers = {
   },
   afterInspector(error) {
     const originalStack = error.stack;
+    let useColors = true;
+    // Some consoles do not convert ANSI escape sequences to colors,
+    // rather display them directly to the stdout. On those consoles,
+    // libuv emulates colors by intercepting stdout stream and calling
+    // corresponding Windows API functions for setting console colors.
+    // However, fatal error are handled differently and we cannot easily
+    // highlight them. On Windows, detecting whether a console supports
+    // ANSI escape sequences is not reliable.
+    if (process.platform === 'win32') {
+      const info = internalBinding('os').getOSInformation();
+      const ver = info[2].split('.').map((a) => +a);
+      if (ver[0] !== 10 || ver[2] < 14393) {
+        useColors = false;
+      }
+    }
     const {
       inspect,
       inspectDefaultOptions: {
         colors: defaultColors
       }
     } = lazyInternalUtilInspect();
-    const colors = (internalBinding('util').guessHandleType(2) === 'TTY' &&
+    const colors = useColors &&
+                   ((internalBinding('util').guessHandleType(2) === 'TTY' &&
                    require('internal/tty').hasColors()) ||
-                   defaultColors;
+                   defaultColors);
     try {
       return inspect(error, { colors });
     } catch {