Files
Alem Tuzlak bc2916efaa fix(runtime-client-gql): guard abort errors without message (#5437)
Fixes #2596

## Summary
`@copilotkit/runtime-client-gql` was still assuming abort-shaped errors
always expose a string `message`, which could turn an early-stop path
into a secondary TypeError instead of a clean abort suppression or the
original failure. This branch centralizes abort detection behind a
null-safe helper and keeps the existing abort phrases unchanged.

## Changes
- Replaced the duplicated abort checks in
`packages/runtime-client-gql/src/client/CopilotRuntimeClient.ts` with a
shared `isAbortError(unknown)` helper that only inspects string
messages.
- Added focused regression coverage in
`packages/runtime-client-gql/src/client/__tests__/CopilotRuntimeClient.test.ts`
for a string abort cause, an object without `message`, known abort
suppression in the stream path, and non-abort stream errors surfacing
normally.
- Added `.changeset/guard-abort-error-message.md` for the patch release
note.

## Scope
Only `packages/runtime-client-gql` and its local changeset are touched.
The abort phrases, caller-facing API, structured GraphQL error handling,
and stream close behavior for known aborts are unchanged.

## Test Plan
- [x] `npx nx run @copilotkit/runtime-client-gql:graphql-codegen` -
regenerated the package GraphQL artifacts used by the client imports.
- [x] `pnpm run build` - workspace build completed successfully.
- [x] `pnpm -C packages/runtime-client-gql exec vitest run
src/client/__tests__/CopilotRuntimeClient.test.ts` - 4/4 passed. Covers
a string abort cause in the fetch path, an object with no `message` in
the fetch path, known abort suppression in the stream path, and
non-abort stream errors surfacing.
- [x] `pnpm exec oxfmt --write
packages/runtime-client-gql/src/client/CopilotRuntimeClient.ts
packages/runtime-client-gql/src/client/__tests__/CopilotRuntimeClient.test.ts`
- formatted the touched source and test files.
- [x] `pnpm exec oxlint
packages/runtime-client-gql/src/client/CopilotRuntimeClient.ts
packages/runtime-client-gql/src/client/__tests__/CopilotRuntimeClient.test.ts`
- 0 warnings, 0 errors.
2026-07-20 16:17:58 +02:00
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