Five test files mocked $lib/shared/services/confirm.svelte under BOTH
spellings (.svelte and .svelte.js) within the same file; two more mocked
only the .svelte.js form. Both resolve to the same module URL but register
two distinct Playwright route handlers in @vitest/browser-playwright. The
cleanup logic only removes one, leaving an orphan that fires when the next
session loads the module — crashing the run with
"[birpc] rpc is closed, cannot call resolveManualMock".
This is the exact trigger fixed upstream by vitest PR #10267 (issue #9957).
Normalise every confirm.svelte mock to the no-extension form, matching
production imports and the source file basename (confirm.svelte.ts).
After this commit: 8 confirm.svelte mocks across 8 spec files, all under
one canonical ID. A meta-test (next commit) prevents the duplicate-id
pattern from reappearing.
Refs: #553 · vitest-dev/vitest#9957 · vitest-dev/vitest#10267
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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