fix(web): translate API error fallbacks and title-bar speeds - #2783
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Move user-facing English out of non-React modules into common.json: - formatErrorMessage "Unknown error" (errors.unknown) - api.ts HTTP status fallback, SSO HTML-response message and torrent file download failure (errors.httpStatus, errors.ssoHtmlResponse, errors.torrentFileDownloadFailed) - document.title speeds (titleBar.speeds); the dashboard suffix reuses the translated route title formatErrorMessage moves to lib/format-error-message.ts so utils.ts, imported by nearly every component through cn(), does not pull in i18n. api.ts imports the i18next singleton rather than @/i18n, which would split the English namespaces out of the entry chunk; each string keeps an English fallback because t() returns undefined before init. Non-English values are best-effort machine translations.
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Included review availability: This review used your included allowance. Your plan provides up to 8 included reviews per hour; 7 remain after this review. WalkthroughThe web application now uses translations for title-bar speed text and selected API error messages. The ChangesLocalization and error handling
Priority: ➖ Normal Estimated code review effort: 2 (Simple) | ~12 minutes Change: Feature Suggested reviewers: Merge Risk: ⚪ Minimal · up to Supported production and demo use initialize translations before API errors can be displayed, so no known merge-blocking risk remains. 🚥 Pre-merge checks | ✅ 4 | ❌ 1❌ Failed checks (1 warning)
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Inline comments:
In `@web/src/lib/api.ts`:
- Around line 433-434: Update the i18n.t calls at the referenced error-message
call sites, including the ssoHtmlResponse call, to pass each existing English
fallback as the defaultValue option instead of using nullish coalescing.
Preserve the current translation keys, namespaces, and English messages.
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web/src/lib/api.ts
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…allbacks AddTorrentDialog.tsx:550 suppresses the raw status by prefix-matching "HTTP error! status:". Translating that message at api.ts:1076 broke the guard in the ten non-English locales: instead of the "check your input" hint, users saw the raw status. The message stays English, with a comment naming the matcher, and a test pins both ends of the coupling. Also drops the third `if (!cleaned)` branch in formatErrorMessage, which cannot fire: every prefix in the regex ends in a space and `normalized` is trimmed, so a match always leaves at least one character. Traced over 1280 inputs built from the four prefixes with case variants, doubled prefixes and all 16 whitespace code points trim() strips: 0 hits. New tests cover the English `??` fallbacks at api.ts:432 and :1894 without importing @/i18n, and formatErrorMessage's prefix stripping. Each guard was mutation-tested: translating :1076, dropping either fallback, changing the dialog prefix and disabling prefix stripping each fail a test.
3 tasks
Drops the hardcoded `?? "English"` fallbacks at the SSO, HTTP-status and torrent-download messages. The app initialises i18n synchronously before api.ts runs, so they never fired there; English lives in en/common.json. Three existing api tests (export, instances, torrents) passed only because those fallbacks fired: they never loaded "@/i18n", so the singleton was uninitialised. Each now imports "@/i18n" directly under its msw server import. api.i18nFallbacks.test.ts becomes api.errorMessages.test.ts and checks the messages resolved from the locale. api.ts:1076 is unchanged: an English literal on purpose, documented in place, because AddTorrentDialog.tsx:550 prefix-matches it.
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Description
Some user-facing English lived outside React components, where the hardcoded-string checker does not look. This PR moves it into
common.json:formatErrorMessageerrors.unknownapi.tsextractErrorData(:513)errors.httpStatusapi.tsssoSafeFetch(:433)errors.ssoHtmlResponseapi.tsdownloadTorrentFile(:1903)errors.torrentFileDownloadFaileduseTitleBarSpeedstitleBar.speedsuseTitleBarSpeedsnav.dashboard), no new keyValues are passed as parameters (
{{status}},{{download}},{{upload}}), never glued on, so each language controls word order. English output is unchanged."D:" and "U:" are English abbreviations, not symbols, so they are translatable. Languages where a letter would not read as "download" use arrows (cs, ko, uk) or short words (zh-CN, zh-TW); fr uses R/E, ca B/P.
One message stays English on purpose.
addTorrent(api.ts:1078) builds the same "HTTP error! status: N" text, butAddTorrentDialog.tsx:550prefix-matches it to tell "the server sent no message" from a real one, and shows its own "check your input" hint instead. Translating it broke that guard in the ten non-English locales (users saw the raw status instead of the hint), so it is an English literal with a comment naming the matcher.api.addTorrentStatusPrefix.test.tspins both ends: it sets i18next to French and checks the message still carries the English prefix, and it checks the dialog still matches on that prefix.English lives in the locale files only. The
api.tsstrings callt()with no hardcoded English fallback. The app initialises i18n synchronously beforeapi.tsruns, so the English comes fromen/common.json.Three existing test files,
api.export,api.instancesandapi.torrents, each gain one line,import "@/i18n", under their msw server import. They assert English error text but never loaded@/i18n, so the uninitialised singleton returnedundefinedand the messages came out empty.Structural changes:
formatErrorMessagemoved fromlib/utils.tstolib/format-error-message.ts, to avoid pulling i18n into every component viacn(). Importing@/i18ninutils.tsbroke 17 component test files that mockreact-i18next(measured on3d73e126). There is no re-export fromutils.ts, which would bring the dependency back.if (!cleaned)guard informatErrorMessage, which could never fire. Every prefix in the regex ends in a space and the input is trimmed first, so a match always leaves at least one character. Traced over 1280 inputs built from the four prefixes, with case variants, doubled prefixes and all 16 whitespace code pointstrim()strips: 0 hits.api.tsimports thei18nextsingleton, not@/i18n. Importing@/i18nthere splits the English namespaces out of the entry chunk.Translations: all non-English values (4 keys × 10 locales) are best-effort machine translations. "Unknown error" reuses each locale's existing wording from
crossseed/torrents.Not addressed here:
addTorrentreads the body withjson()and thentext()on the same response, so a non-JSON error body (e.g. a reverse proxy's error page) falls back to the generic status message. qui's own errors are JSON and unaffected.How has this been tested?
Live, with
go buildof this branch serving the production bundle, auth disabled, and a syntheticqbittorrent-noxinstance. The tab title with title-bar speeds turned on, read fromdocument.title:D: 0 B/s U: 0 B/s | Dashboard(same as before)D: 0 B/s U: 0 B/s | Synthetic qBittorrent(same as before)下载：0 B/s 上传：0 B/s | 仪表盘↓ 0 B/s ↑ 0 B/s | Synthetic qBittorrentR : 0 B/s E : 0 B/s | Tableau de bordThe error strings were not triggered live. New tests:
api.errorMessages.test.ts: the SSO and torrent-download messages, resolved from the locale. It was first written asapi.i18nFallbacks.test.tsto cover the English fallbacks; once those were removed, the old name no longer described it.api.addTorrentStatusPrefix.test.ts: theaddTorrentprefix coupling described above.format-error-message.test.ts: empty input, prefix stripping, capitalisation, and a bare prefix.Each test was mutation-checked. Each change below was made to the code and made a test fail:
api.ts:1078again;import "@/i18n"fromapi.export's test;Checks on this head (
03591786):pnpm lintOK,pnpm check:i18nOK, full vitest 143/143 files and 1348/1348 tests. No Go files changed.Performance
Risk: new imports can change the bundle graph, and one did in an earlier version of this change. Measured
pnpm buildon this PR's merge-base with develop (110b1281) and on this branch (03591786), same container (node:24). Counted the JS the first load fetches (the entry script plusmodulepreloadlinks indist/index.html). Compressed size is from the command-linegzip -9:gzip -9bytes110b128103591786Other compressors give a different delta: moving
formatErrorMessageshifts code between two chunks that both load initially, and compressors weigh that differently.The added bytes are the new keys in the eagerly bundled English
common.json. Runtime cost: onet()lookup per error, and one per title update (the effect already ran on every speed change). No new requests, renders or effects. Conclusion: no regression.Checklist
AI disclosure
Yes. Claude Code (Claude Opus 5 and Opus 5.5) wrote the code, the tests and all non-English translations. Colin Hebert directed the work.
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