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https://issues.apache.org/jira/browse/ATLAS-5396?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Prasad P. Pawar updated ATLAS-5396:
-----------------------------------
Parent: ATLAS-5391
Issue Type: Sub-task (was: Task)
> Atlas UI: Buldle and CSS Optimization, Reduce unused JS/CSS via route
> splitting, lazy imports, and CSS scoping
> --------------------------------------------------------------------------------------------------------------
>
> Key: ATLAS-5396
> URL: https://issues.apache.org/jira/browse/ATLAS-5396
> Project: Atlas
> Issue Type: Sub-task
> Components: atlas-webui
> Affects Versions: 3.0.0
> Reporter: Prasad P. Pawar
> Assignee: Prasad P. Pawar
> Priority: Major
>
> Search route downloads ~2 MB unused JavaScript and ~146 KB unused CSS on
> every load.
> Top unused JS (search page):
> - Router-*.js: 513 KB (84% unused)
> - index-CXpXlOx8.js: 405 KB (76% unused)
> - EntityDetailPage-*.js: 101 KB (97% unused)
> - AdministratorLayout-*.js: 35 KB (96% unused)
> - mui-*.js: 561 KB (40% unused)
> - utils-*.js: 848 KB (includes moment-timezone)
> - d3-*.js: 210 KB (loaded eagerly)
> CSS:
> - index-D_4lT_Sx.css: 137 KB, 96% unused, render-blocking ~851 ms
> Fixes:
> 1. Audit Rollup chunk graph (rollup-plugin-visualizer)
> 2. Ensure admin, EntityDetailPage, entity-form routes use dynamic import()
> only on navigation
> 3. Refine manualChunks — separate admin, detail, charts from search bundle
> 4. Move page-specific SCSS to route/component level; inline ~2–3 KB critical
> layout CSS in index.html
> 5. MUI path imports (@mui/material/Button) to reduce mui chunk
> 6. Evaluate lighter date lib vs moment-timezone in utils chunk
> 7. Verify no eager prefetch of all route chunks
> Acceptance Criteria:
> * Search load does NOT download EntityDetailPage or AdministratorLayout
> chunks
> * Router unused % drops below 50% on search route
> * Unused CSS audit savings ≥ 100 KB on search route
> * mui chunk reduced ≥ 15%
> * Lighthouse unused-javascript savings ≥ 1,500 KB
> * No visual regression across main routes
> * Build size report attached to PR
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