⚡ Bolt: optimize homepage speakers fetching#27
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Refactors the Section5 (Speakers) component to receive data via props instead of fetching it client-side. Updates the homepage (app/[year]/page.tsx) to fetch speakers during server rendering (ISR) and pass a random subset to the component. This eliminates a client-side waterfall, reduces layout shifts, and improves LCP. Co-authored-by: anyulled <100741+anyulled@users.noreply.github.com>
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📝 WalkthroughWalkthroughServer pages now fetch speaker data and compute random subsets; Section5 is refactored to accept Changes
Sequence Diagram(s)sequenceDiagram
participant User as User/Browser
participant Server as Server<br/>(page.tsx)
participant Hook as Hook<br/>(useSpeakers)
participant Section as Client Component<br/>(Section5)
User->>Server: Request page for year
Server->>Hook: getSpeakers(year)
Hook-->>Server: allSpeakers
Server->>Hook: getRandomSpeakers(allSpeakers, 6)
Hook-->>Server: randomSpeakers
Server->>Server: compute totalSpeakers
Server->>Section: render with props {speakers, totalSpeakers}
Section-->>User: render speaker list in browser
Estimated Code Review Effort🎯 3 (Moderate) | ⏱️ ~20 minutes Poem
🚥 Pre-merge checks | ✅ 2 | ❌ 1❌ Failed checks (1 warning)
✅ Passed checks (2 passed)
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🧪 Generate unit tests (beta)
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Summary of ChangesHello @anyulled, I'm Gemini Code Assist1! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed! This pull request introduces a significant optimization to the homepage by refactoring how speaker data is fetched. By moving the data fetching logic from a client-side component to server-side pages, the application now benefits from improved initial load performance, reduced client-side JavaScript overhead, and the elimination of layout shifts. This strategic shift also enhances SEO by ensuring speaker content is present in the initial HTML and leverages ISR caching for efficient data delivery. Highlights
Changelog
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Code Review
This pull request is a great performance optimization, moving speaker data fetching from the client to the server in app/[year]/page.tsx. This correctly leverages Next.js Server Components and ISR to reduce client-side JavaScript, eliminate layout shifts, and improve SEO. The refactoring of getRandomSpeakers into a shared hook is also a good code quality improvement. I've identified one critical issue regarding the package-lock.json changes and a medium-severity suggestion to improve test coverage for the new data flow.
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package-lock.json (4428-4451)
The changes in package-lock.json remove numerous development dependencies (like @types/eslint, webpack, terser-webpack-plugin, etc.). As you've noted in the PR description, this likely indicates an environment mismatch and could break the development and build setup for other contributors. These unrelated changes should be reverted to prevent such issues. Please consider running npm install in an environment that matches the project's setup and committing only the necessary changes, or reverting this file to its state on the target branch.
app/[year]/page.tsx (94)
The Section5 component now receives speakers and totalSpeakers props, which is a key part of this refactor. To ensure this data flow is correctly tested, the unit test for this page (__tests__/pages/year-index.test.tsx) should be updated. The current test mock for Section5 doesn't account for these new props, so the test isn't verifying that the fetched speaker data is passed down correctly. Please update the mock and add assertions for these new props.
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Refactors the Section5 (Speakers) component to receive data via props instead of fetching it client-side. Updates the homepage (app/[year]/page.tsx) to fetch speakers during server rendering (ISR) and pass a random subset to the component. This eliminates a client-side waterfall, reduces layout shifts, and improves LCP. Co-authored-by: anyulled <100741+anyulled@users.noreply.github.com>
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The Section5 component now receives speakers and totalSpeakers props, which is a key part of this refactor. To ensure this data flow is correctly tested, the unit test for this page (tests/pages/year-index.test.tsx) should be updated. The current test mock for Section5 doesn't account for these new props, so the test isn't verifying that the fetched speaker data is passed down correctly. Please update the mock and add assertions for these new props. |
Thank you for the feedback. I have updated the |
Updates the __tests__/pages/year-index.test.tsx to verify that the new `speakers` and `totalSpeakers` props are correctly passed to the Section5 component. This addresses PR feedback to ensure data flow is tested. Co-authored-by: anyulled <100741+anyulled@users.noreply.github.com>
anyulled
deleted the
bolt-optimize-speakers-fetching-15807052520496551474
branch
1 participant
💡 What: Moved speaker data fetching from
Section5(Client Component) toapp/[year]/page.tsx(Server Component).🎯 Why: To improve performance by leveraging ISR caching, reducing client-side JavaScript execution, and eliminating layout shifts caused by client-side fetching.
📊 Impact:
🔬 Measurement:
Section5receives speakers as props.PR created automatically by Jules for task 15807052520496551474 started by @anyulled
Summary by CodeRabbit
Documentation
Refactor
Tests