Phase 5: Item Details & Recursive Comments#313
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- Replace Angular build config with Vite + React 18 setup - Create vite.config.ts, tsconfig.json, package.json with React deps - Add entry points: src/main.tsx, src/App.tsx, index.html - Port SCSS theming files (_themes.scss, _theme_variables.scss, _media.scss) - Define TypeScript interfaces in src/types/ (Story, Comment, User, Settings, PollResult, FeedType) - Move static assets to public/ directory for Vite serving - Remove Angular-specific files: angular.json, tsconfig.app/spec.json, tslint.json, karma.conf.js, ngsw-config.json, browserslist, polyfills.ts, test.ts, all *.module.ts files - Remove Angular dependencies, add react, react-dom, react-router-dom v6 - Verify npm run dev starts and app shell renders Co-Authored-By: Vibha Seshadri <vibha.seshadri@cognition.ai>
- Add src/services/hackernews-api.ts: fetchFeed, fetchItemContent (with poll sub-fetching via Promise.all), fetchPollContent, fetchUser using plain fetch - Add src/contexts/SettingsContext.tsx: React Context + useReducer for Settings state, localStorage persistence, system dark mode detection with matchMedia listener - Add src/components/shared/Loader.tsx + SCSS: CSS loading animation ported from Angular - Add src/components/shared/ErrorMessage.tsx + SCSS: skull error display ported from Angular - Add src/utils/formatComment.ts: replaces Angular CommentPipe (0→'discuss', 1→'1 comment', n→'n comments') - Update tsconfig.json include paths for new directories Co-Authored-By: Vibha Seshadri <vibha.seshadri@cognition.ai>
- Add Header with NavLink navigation, logo, settings toggle, scrollTo(0,0) on nav clicks - Add Footer with static content matching Angular template - Add Settings panel with theme radios, open-in-new-tab checkbox, font size and list spacing inputs - All components consume SettingsContext - Port all SCSS styles from Angular components Co-Authored-By: Vibha Seshadri <vibha.seshadri@cognition.ai>
- FeedPage: paginated feed with loader/error states, 30 items/page, prev/more navigation - ItemRow: story row with external/internal link logic, domain, points, user, time_ago, comment count - Respects settings: titleFontSize, listSpacing, openLinkInNewTab - Mobile/laptop responsive layouts via subtext-palm/subtext-laptop - Jobs feed special header text - SCSS ported from Angular feed and item components Co-Authored-By: Vibha Seshadri <vibha.seshadri@cognition.ai>
- ItemDetailsPage: fetches item by ID, back button via useNavigate(-1), poll results with percentage bars, dangerouslySetInnerHTML for content, mobile/laptop responsive layouts - Comment: recursive rendering of nested comments, collapse/expand toggle, deleted comment display - SCSS ported from Angular item-details and comment components Co-Authored-By: Vibha Seshadri <vibha.seshadri@cognition.ai>
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This was referenced Jun 9, 2026
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Summary
Implements the item details page and recursive comment component.
ItemDetailsPage (
src/pages/ItemDetailsPage.tsx):fetchItemContent, shows Loader/ErrorMessageuseNavigate(-1)(mobile)width: points/poll_votes_count*100%bar per optiondangerouslySetInnerHTMLComment (
src/components/comments/Comment.tsx):comment.commentschildren[+]/[-][deleted] | Comment DeleteddangerouslySetInnerHTMLDepends on Phase 4 (#312).
Link to Devin session: https://app.devin.ai/sessions/0bb1dd94ecbc4422a76b7a458d0f4e7c
Requested by: @vibhaseshadri-cognition
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