App submissions from connected GitHub repositories now retain vitest.config.js, .mjs, .cjs, .ts, .mts and .cts. Core also accepts these files in CLI-uploaded source snapshots; use a CLI release that includes the matching export support.

Existing accepted snapshots and their source digests remain unchanged. If an older snapshot omitted your test configuration, submit a new App version containing that configuration. Rebuilding the retained snapshot does not add missing files. Frontend tests must still run and pass before approval.