util: make sure error causes of any type may be inspected

An error cause may be of any type. Handle all of them, no matter if they are an error or not. Fixes: #41096 Signed-off-by: Ruben Bridgewater <[email protected]> PR-URL: #41097 Reviewed-By: Michaël Zasso <[email protected]> Reviewed-By: James M Snell <[email protected]> Reviewed-By: Tobias Nießen <[email protected]> Reviewed-By: Anto Aravinth <[email protected]>
nodejs · Dec 13, 2021 · 09d29ca · 09d29ca
1 parent f5ff88b
commit 09d29ca
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diff --git a/lib/internal/util/inspect.js b/lib/internal/util/inspect.js
@@ -1215,7 +1215,7 @@ function getStackFrames(ctx, err, stack) {
   const frames = stack.split('\n');
 
   // Remove stack frames identical to frames in cause.
-  if (err.cause) {
+  if (err.cause && isError(err.cause)) {
     const causeStack = getStackString(err.cause);
     const causeStackStart = causeStack.indexOf('\n    at');
     if (causeStackStart !== -1) {

diff --git a/test/message/util-inspect-error-cause.js b/test/message/util-inspect-error-cause.js
@@ -13,6 +13,19 @@ const cause2 = new FoobarError('Individual message', { cause: cause1 });
 cause2.extraProperties = 'Yes!';
 const cause3 = new Error('Stack causes', { cause: cause2 });
 
+const cause4 = new Error('Number error cause', { cause: 42 });
+const cause5 = new Error('Object cause', {
+  cause: {
+    message: 'Unique',
+    name: 'Error',
+    stack: 'Error: Unique\n' +
+           '    at Module._compile (node:internal/modules/cjs/loader:827:30)'
+  }
+});
+
+console.log(cause4);
+console.log(cause5);
+
 process.nextTick(() => {
   const error = new RangeError('New Stack Frames', { cause: cause2 });
   const error2 = new RangeError('New Stack Frames', { cause: cause3 });

diff --git a/test/message/util-inspect-error-cause.out b/test/message/util-inspect-error-cause.out
@@ -1,3 +1,28 @@
+Error: Number error cause
+    at *
+    at *
+    at *
+    at *
+    at *
+    at *
+    at * {
+  [cause]: 42
+}
+Error: Object cause
+    at *
+    at *
+    at *
+    at *
+    at *
+    at *
+    at * {
+  [cause]: {
+    message: 'Unique',
+    name: 'Error',
+    stack: 'Error: Unique\n' +
+      '    at Module._compile (node:internal/modules/cjs/loader:827:30)'
+  }
+}
 RangeError: New Stack Frames
     at *
 *[90m    at *[39m {