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fix(compiler): keep translations that completed before a run failed - #2190
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Included review availability: 1 review is currently available. Your included PR review attempts over the past 7 days set your current allowance at 4 reviews per hour. 📝 WalkthroughWalkthroughThe translator now preserves completed chunk results when a later chunk fails. ChangesPartial Translation Recovery
Estimated code review effort: 3 (Moderate) | ~20 minutes Merge Risk:⚪ Minimal · up to The change preserves translations completed before a failed run while continuing to report the failure, and targeted tests cover the behavior. No actionable merge-blocking risk remains beyond normal checks and review. Sequence Diagram(s)sequenceDiagram
participant TranslationService
participant LingoTranslator
participant TranslationCache
TranslationService->>LingoTranslator: translate uncached entries
LingoTranslator-->>TranslationService: PartialTranslationError with completed entries
TranslationService->>TranslationCache: cache completed entries
TranslationService-->>TranslationService: record failure and return partial result
TranslationService->>TranslationCache: read cached entries on retry
🚥 Pre-merge checks | ✅ 4 | ❌ 1❌ Failed checks (1 warning)
✅ Passed checks (4 passed)
✨ Finishing Touches 💡 1📝 Generate docstrings 💡
🧪 Generate unit tests (beta)
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Inline comments:
In `@packages/new-compiler/src/translators/lingo/timeout-repro.test.ts`:
- Line 31: Rename the test around translator.translate to describe only the
partial results retained after a timeout; remove the unsupported “not re-request
them next run” claim. Leave request-avoidance coverage to TranslationService,
where the retained cache can be verified.
🪄 Autofix
Fix all unresolved CodeRabbit comments on this PR:
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- Create a new PR with the fixes
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packages/new-compiler/src/translators/lingo/timeout-repro.test.ts
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Problem
When a translation run fails partway through, the compiler discards every entry that already came back successfully.
TranslationService.translatewrites to the cache in exactly one place (translation-service.ts, step 5). Thecatcharoundtranslator.translate()sits above it and returns early, so that write is unreachable whenever translation throws.LingoTranslator.translateDictionarycompounds it: chunks are translated in a sequential loop with no innertry, so a failure on chunk 7 discards chunks 1-6 along with it.Those discarded entries were already generated and billed. Because the next build computes its work list as
uncachedHashes = workingHashes.filter(hash => !cachedTranslations[hash]), nothing was persisted, so the identical set of strings is submitted and paid for again on every subsequent build.This is most visible behind the 60s
DEFAULT_TIMEOUTS.AI_APIceiling (#2053), but it is not specific to timeouts: any throw on the translation path loses the completed work.Change
PartialTranslationErrorintranslators/api.tscarries the entries that completed, plus the original error ascause. TheTranslatorinterface is unchanged.LingoTranslator.translateDictionarywraps the chunk loop and throwsPartialTranslationErrorwith the chunks that finished.TranslationService.translateno longer returns early from thecatch. It merges the partial results intonewTranslations, still pushes thehash: "all"error, and falls through to the cache write.stats.failednow counts hashes that genuinely lack a translation rather thanerrors.length. Same number on the success path; it stopped lying on the failure path.The failure contract is unchanged: the error is still reported, so
build-translatorstill fails the build on a non-emptyerrorsarray. The only difference is that the cache keeps what was already paid for.Tests
withTimeoutand this path had no tests. Added seven, covering both halves.Verified they fail without the change. With the behaviour files reverted to
main(keepingPartialTranslationErrorso it still compiles):The two that pass in both states are the guard cases: a run that fails before any entry completes, and a plain error carrying no partials. Neither should write to the cache.
With the change, the full package suite is green:
15 files, 226 passed, 1 todo.The load-bearing assertion is the last one. Two consecutive runs where the first fails after partial completion: the second requests only the missing hash, instead of both.
Summary by CodeRabbit
New Features
Bug Fixes