26 lines
1.9 KiB
Markdown
26 lines
1.9 KiB
Markdown
# AEG-X-002 — Route Code-Splitting Refactoring
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- **WBS / Requirement:** AEG-X-002 / REQ-PLAT-TOOL
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- **Classification:** behavior-preserving frontend build refactoring
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- **Selected on:** 2026-08-08
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## Source / Assumption / Unknown / Decision Required
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- **Source:** `frontend/src/app/router.ts` and the co-located tracked `router.js` initially statically import every route component; the actual 2026-08-08 production build reports a 501.14 kB gzip initial JavaScript chunk. A first TypeScript-only refactoring did not change build output, demonstrating that the Vite resolver uses the co-located JavaScript router entry in this repository.
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- **Assumption:** Vue Router's supported lazy route-component function preserves every route path, metadata, guard behavior, and component API while moving feature code out of the initial chunk.
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- **Unknown:** an approved application performance budget is not present. Chunk reduction is an observation, not a performance-gate pass.
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- **Decision Required:** none for this refactoring. Budget approval, visual evidence, and large-list interaction evidence remain separate work.
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## Change
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- Replace route component static imports with lazy `import()` factories in both active co-located router entries.
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## Acceptance Evidence
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- All existing route paths and metadata remain unchanged.
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- `pnpm test` passed: 26 files / 58 tests. Preserved output: `evidence/AEG-X-002/frontend-regression-route-split_20260808.log`.
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- `pnpm build` passed. Preserved output: `evidence/AEG-X-002/frontend-build-route-split_20260808.log`.
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- The initial gzip JavaScript chunk changed from 501.14 kB to 423.76 kB and page chunks are emitted separately. Vite still warns because its default raw-size threshold is exceeded; the threshold was not changed and this is not an approved performance-gate pass.
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No API, provider, policy, database, capability, or route authorization behavior changes.
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