Skip to content

worker: serialize errors if stack getter throws #26145

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Closed
wants to merge 1 commit into from
Closed

worker: serialize errors if stack getter throws #26145

Show file tree
Hide file tree
Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
6 changes: 4 additions & 2 deletions lib/internal/error-serdes.js
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -36,7 +36,10 @@ function TryGetAllProperties(object, target = object) {
Assign(all, TryGetAllProperties(GetPrototypeOf(object), target));
const keys = GetOwnPropertyNames(object);
ForEach(keys, (key) => {
const descriptor = GetOwnPropertyDescriptor(object, key);
let descriptor;
try {
descriptor = GetOwnPropertyDescriptor(object, key);
} catch { return; }
Copy link
Member

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

I am fine with returning undefined but wouldn't it be even better to return the error to the user as well? We could wrap it into something else so it's clear that accessing the property threw (for example by adding a new Node.js error like ERR_THREW_ON_ACCESS) which contains the actual error as property.

const getter = descriptor.get;
if (getter && key !== '__proto__') {
try {
Expand Down Expand Up @@ -89,7 +92,6 @@ function serializeError(error) {
for (var i = 0; i < constructors.length; i++) {
const name = GetName(constructors[i]);
if (errorConstructorNames.has(name)) {
try { error.stack; } catch {}
const serialized = serialize({
constructor: name,
properties: TryGetAllProperties(error)
Expand Down
22 changes: 22 additions & 0 deletions test/parallel/test-worker-error-stack-getter-throws.js
View file
Open in desktop
Original file line number Diff line number Diff line change
@@ -0,0 +1,22 @@
'use strict';
const common = require('../common');
const assert = require('assert');
const { Worker } = require('worker_threads');

const w = new Worker(
`const fn = (err) => {
if (err.message === 'fhqwhgads')
throw new Error('come on');
return 'This is my custom stack trace!';
};
Error.prepareStackTrace = fn;
throw new Error('fhqwhgads');
`,
{ eval: true }
);
w.on('message', common.mustNotCall());
w.on('error', common.mustCall((err) => {
assert.strictEqual(err.stack, undefined);
assert.strictEqual(err.message, 'fhqwhgads');
assert.strictEqual(err.name, 'Error');
}));
Copy link
Member

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

I suggest to change this part to:

w.on('error', common.expectsError({
  stack: undefined,
  message: 'fhqwhgads',
  name: 'Error'
});