Scans every src/**/*.svelte.{spec,test}.ts file for vi.mock first-arg
strings, canonicalises each by stripping a trailing .js/.ts after
.svelte, groups by canonical id, and fails if any canonical id is
referenced under two or more distinct raw spellings.
Mirrors the shape of src/__meta__/no-async-mock-factories.test.ts:
source-text regex scan (no AST parser dependency), red/green self-test
fixtures inline, then one corpus assertion that the whole suite is
clean.
This is the in-suite defence-in-depth layer for the duplicate-id birpc
race named in ADR-012 / #553 and fixed upstream by vitest PR #10267.
Harder to disable than ESLint (cross-file invariant ESLint cannot
express anyway) and harder to scope around than a CI grep.
Refs: #553
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Hover-prefetch has two surfaces in SvelteKit:
- data-sveltekit-preload-data (route loader data)
- data-sveltekit-preload-code (route JS chunks)
The original fix turned off only the loader-data side. Route-code chunks
prefetched on hover can also include manually-mocked module URLs; an
in-flight code prefetch landing after iframe teardown hits the same
Playwright route handler that resolves manual mocks, raising the
unhandled rejection. Disable both surfaces.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
In-suite belt-and-braces detector for the birpc teardown race named in
ADR-012 / #553. Catches `vi.mock(<arg>, async ... { ... await import(...)
... })` in any browser spec on every vitest invocation — the layer hardest
to disable or scope around (ESLint can be silenced; CI grep runs only in
CI; this test runs whenever the suite runs).
Demonstrated red→green by planting a synthetic offender locally and
watching the live-scan assertion fail; removing the offender returned it
to green.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Hover-prefetch fires real fetch requests for route loader chunks; those
requests go through the same Playwright route handler that serves mocked
modules. An in-flight prefetch landing after iframe teardown can hit the
handler with a closed birpc channel, raising an unhandled rejection that
exits the run with code 1 even when every individual test was green.
Add `src/test-setup.ts` that sets `document.body.dataset.sveltekitPreloadData
= 'off'` and wire it via `setupFiles` in both `vite.config.ts` (client
project) and `vitest.client-coverage.config.ts` (Istanbul coverage config).
Add `src/__meta__/browser-preload-disabled.svelte.test.ts` asserting the
setup ran. Zero production impact.
Issue #553 secondary trigger.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
