Google turns the legacy Fitbit Web API off on 30 October 2026 (support
ended on 30 September). From that day the hourly poll, the backfill,
the sleep repair and the token refresh make no call, the connect, sync
and test routes refuse with `provider_retired`, and the connection
reads as not connected to the health read and the watchdog, so the
shutdown pages nobody and asks nobody to reconnect. The connection row
and everything it imported stay.
The status envelope publishes `retirement` on the Fitbit entry (the
day, whether it has come, the successor), and the Fitbit card shows
when the connection stops, how to move to Google Health (same devices,
one more consent, tokens cannot be carried over) and that the data
stays; sync and connect grey out after the day. Both integrations can
run side by side meanwhile: every type Fitbit writes is laddered with
Fitbit just above Google Health, so a day both deliver counts once.
The test setups pin the turndown off, so the Fitbit suites do not turn
red on the day; the turndown's own tests flip it.
The unit suite reported all 1937 files green and then failed the job with
`EnvironmentTeardownError: Closing rpc while "onUserConsoleLog" was
pending`, naming a different scoring test each time.
Vitest replaces globalThis.console with a sink that forwards every write
to the main thread as an onUserConsoleLog RPC call. When a worker
finishes a test file it awaits the calls in flight and then rejects
whatever was started after that point, so a console write from work that
outlived its test lands in the gap and fails the run. The blame goes to
the file being torn down rather than to the test that started the work,
which is why the named file never logged anything itself.
Three paths detach a promise and log on the handle: fireAndForget, the
stale-while-revalidate cache refresh, and the offline query persister.
They now register the handled handle in a set that both suite setups
drain in afterEach, so no test leaves work in flight. The registry is
inert outside test: nothing there awaits it, and holding a reference to
an unsettled promise would retain it for the life of a worker. No
production behaviour changes, so there is no changelog entry.
Evidence. A focused harness that starts failing background tasks and
returns hit the teardown error 10 runs out of 10 before the change and
0 out of 10 after. Instrumenting the real suite showed two detached
console writes per run escaping their test, both from the rollup tail;
after the change, none, and thirteen writes per run now complete inside
the test that started them.
The guard asserts the behaviour, not a count: a registered task must
keep settleBackgroundTasks from resolving ahead of it, and the set must
drain back to empty. It goes red on unregistered work, on a disabled
registry, on an unwrapped call site, on a sweep that matches nothing,
and on a setup that drops the hook.
Marc-André Bombeck