9a953b060f2c4fdcfd31217f71cc7aa932a3dd4b
2
Commits
| Author | SHA1 | Message | Date | |
|---|---|---|---|---|
 bermudalamb
|
45f1c77160 |
refactor(frontend): triage the setState-in-effect sites (#99)
Eleven warnings that looked alike and were not. This is a decision per site rather than eleven fixes, which is what the issue asked for — some of these would be made worse by "fixing" them. One was a real defect. VerifyEmail routed a fact through an effect that was already knowable during render: whether the link carries a token comes from the URL. The component therefore rendered once as a spinner in a state that was never true — a link with no token was never "verifying". Both pieces of state now derive their initial value from the token, and the effect's missing-token branch becomes an early return, so the failure is what the first render shows. Two are a defensible reset. CartProvider and FavoritesProvider clear their collection when the customer becomes null, which is synchronisation with the session rather than derived state. Deriving instead would push "signed out" onto every consumer of those contexts, and remounting on a `key` is more indirection than the problem deserves. Decided and written down rather than left for the next reader to re-investigate. Eight are legitimate and flagged conservatively. Six are a pending flag before a fetch — the rule cannot tell a spinner from a value that was already known. Cart's lapsed-item refetch is synchronisation with a server-side release the client cannot observe. useNow subscribes to the clock, which is the case the rule's own documentation names as correct. Each of the ten that stay carries the reason and a targeted disable, so lint drops from thirteen warnings to two — and the two left are the unrelated no-alphabetical-sort pair. Suppressing per site rather than switching the rule off keeps it live for new code, which is where the next VerifyEmail would be caught. The trap #60 recorded caught this, in a variant it does not describe. Placing the disable above `useEffect(` works only for a single-line effect: where the effect spans several lines the flagged line is the setState inside the body, so the directive covered nothing and produced both an unused-disable warning and the original one. Three sites were wrong that way on the first attempt. Confirmed fixed by the absence of "Unused eslint-disable directive" from the output — a disable that covers nothing reports itself, which is what makes this checkable rather than assumed. Verified: tsc clean over src and tests, and the specs covering the changed behaviour pass — verify-email, auth, favorites, orders, cart-countdown, resend-verification, 32 of 33 with the one failure passing 10/10 in a serial re-run. Closes #99 |
||
|
bermudalamb
|
5ef97bef21 |
fix(cart): make the reservation countdown tick, and warn against the real hold (#97)
The cart showed "2h 15m left" and turned it red in the final hour. Neither updated. Both readings happened during render from the wall clock, and nothing scheduled a re-render — no setInterval anywhere in the file — so the number a customer read was whatever it was when the page loaded, and the warning colour could only appear by accident, because the component had already rendered before the final stretch began. That matters more here than in most shops: every item is one of a kind, so a lapsed reservation is not "buy it later", it is someone else buying the only one. New useNow hook returns the time as state rather than merely forcing a re-render, and that is the point. A component reading Date.now() while rendering produces output that depends on the clock, which React is entitled to assume it does not — react-hooks/purity says so, and this was the only instance in the codebase precisely because it was the only place doing it. Reading `now` from state makes render a function of its inputs again, so the rule is satisfied rather than suppressed. It ticks every 30s, which matches the display's one-minute resolution, and only while the cart holds something, so an empty cart is not waking React forever. A second defect the issue did not mention. The red warning was hardcoded to the final hour, but the hold became admin-configurable in #136 and accepts values as low as half an hour — so on any setting below an hour every item was red from the moment it was reserved, and a warning that is always on is not a warning. It now keys off the last tenth of the item's own added_at-to-expires_at span. Reading it from the item rather than from the setting also means an admin changing the value does not retroactively relabel a reservation granted under the old one. At zero the row keeps saying "expiring…" and the page refetches on each tick while anything is lapsed, so it clears within one interval of the server's sweep actually releasing it. The client cannot know when that lands — the sweep runs every few minutes — so the wording claims imminence, which is true, rather than completion, which is not ours to say. The header badge is refreshed alongside, since it counts held items and goes stale the same way. Verified against the unfixed component, not just the fixed one: two of the three new tests fail on the old code. The third documents the "expiring…" wording rather than the fix, and passes either way — worth having, but it is not evidence. The tests use Playwright's clock control rather than waiting in real time, which also makes them deterministic: without it, "the text changed" would depend on where in the minute the run happened to start. Refs #97 |