Karthikeya1500 opened a new pull request, #5943:
URL: https://github.com/apache/couchdb/pull/5943
# QuickJS: fix error reporting in query server
## Problem
The QuickJS query server fails to report useful error messages when standard
JavaScript errors or non-Error objects (like strings) are thrown outside of
captured sandboxes.
1. **For standard Error objects:** `JSON.stringify(e)` results in an empty
object `{}`. The client receives `["error", "SomeError", {}]` instead of the
error details.
2. **For non-Error objects (e.g., `throw "foo"`):** The server attempts to
access `e.stack`, which is `undefined` on strings/primitives. This results in
`["error", "unnamed_error", null]`.
## Solution
Use the existing `errstr(e)` utility (already defined in `util.js`) to
ensure that a descriptive string representation of the error is sent back to
the client. This brings the QuickJS implementation in line with the
SpiderMonkey behavior in `loop.js` and other parts of the codebase.
## Testing
Verified that `errstr(e)` correctly identifies and stringifies both standard
`Error` instances and primitive values thrown by user code.
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