⚡ Bolt: Optimize generateStaticParams with Promise.all for faster build times#65
⚡ Bolt: Optimize generateStaticParams with Promise.all for faster build times#65
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…ld times Replaced sequential asynchronous fetching loops in `generateStaticParams` with `Promise.all` across `app/[year]/talks/[talkId]/page.tsx`, `app/[year]/speakers/[speakerId]/page.tsx`, and `app/[year]/tags/[tag]/page.tsx`. This correctly parallelizes fetching for all conference years during static generation, significantly reducing the build time bottleneck. Co-authored-by: anyulled <100741+anyulled@users.noreply.github.com>
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Summary of ChangesHello, 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 enhances the application's build performance by refactoring Highlights
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📝 WalkthroughWalkthroughMultiple pages' generateStaticParams functions were refactored to use Promise.all for concurrent data fetching across years instead of sequential loops. Per-year error handling was added. A documentation section was added to .jules/bolt.md explaining this parallel data fetching pattern for static generation. Changes
Estimated code review effort🎯 3 (Moderate) | ⏱️ ~20 minutes Poem
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Code Review
This pull request effectively addresses a performance bottleneck in generateStaticParams by replacing sequential data fetching loops with parallel requests using Promise.all. The change is consistently applied across the speakers, tags, and talks pages, which will improve build times. The error handling is correctly implemented to prevent single-point failures. I have one suggestion to further simplify the code in the tags page for better readability.
| const allTags = new Set<string>(); | ||
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| for (const talk of allTalks) { | ||
| getTagsFromTalk(talk).forEach((tag) => allTags.add(tag)); | ||
| } |
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The logic for collecting all unique tags can be made more concise. You can use flatMap to get all tags from all talks and then initialize the Set directly from that array. This avoids the explicit for loop and forEach call, making the code more declarative and readable.
| const allTags = new Set<string>(); | |
| for (const talk of allTalks) { | |
| getTagsFromTalk(talk).forEach((tag) => allTags.add(tag)); | |
| } | |
| const allTags = new Set<string>(allTalks.flatMap((talk) => getTagsFromTalk(talk))); |
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🧹 Nitpick comments (1)
app/[year]/tags/[tag]/page.tsx (1)
30-32: Address static analysis warning: forEach callback returns a value.The Biome linter flags this because
Set.add()returns the Set, making the arrow function implicitly return a value. While functionally correct, consider using a block body orfor...ofloop to silence the warning.🔧 Proposed fix
- for (const talk of allTalks) { - getTagsFromTalk(talk).forEach((tag) => allTags.add(tag)); - } + for (const talk of allTalks) { + for (const tag of getTagsFromTalk(talk)) { + allTags.add(tag); + } + }Alternative (minimal change):
- getTagsFromTalk(talk).forEach((tag) => allTags.add(tag)); + getTagsFromTalk(talk).forEach((tag) => { allTags.add(tag); });🤖 Prompt for AI Agents
Verify each finding against the current code and only fix it if needed. In `@app/`[year]/tags/[tag]/page.tsx around lines 30 - 32, The linter warning is caused by the forEach arrow implicitly returning the Set because Set.add() returns the Set; update the loop so the callback does not return a value — e.g., replace the forEach with an explicit block body or a for...of loop that iterates getTagsFromTalk(talk) and calls allTags.add(tag) inside the block; target the snippet using allTalks, getTagsFromTalk, and allTags (and Set.add) to implement the non-returning callback.
🤖 Prompt for all review comments with AI agents
Verify each finding against the current code and only fix it if needed.
Nitpick comments:
In `@app/`[year]/tags/[tag]/page.tsx:
- Around line 30-32: The linter warning is caused by the forEach arrow
implicitly returning the Set because Set.add() returns the Set; update the loop
so the callback does not return a value — e.g., replace the forEach with an
explicit block body or a for...of loop that iterates getTagsFromTalk(talk) and
calls allTags.add(tag) inside the block; target the snippet using allTalks,
getTagsFromTalk, and allTags (and Set.add) to implement the non-returning
callback.
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📒 Files selected for processing (4)
.jules/bolt.mdapp/[year]/speakers/[speakerId]/page.tsxapp/[year]/tags/[tag]/page.tsxapp/[year]/talks/[talkId]/page.tsx
…ld times Replaced sequential asynchronous fetching loops in `generateStaticParams` with `Promise.all` across `app/[year]/talks/[talkId]/page.tsx`, `app/[year]/speakers/[speakerId]/page.tsx`, and `app/[year]/tags/[tag]/page.tsx`. This correctly parallelizes fetching for all conference years during static generation, significantly reducing the build time bottleneck. Also fixed a failing Cypress test in `cypress/e2e/home/home-editions.cy.ts` which was expecting an `h5` tag that had been replaced with `.hero8-header__event-line`. Co-authored-by: anyulled <100741+anyulled@users.noreply.github.com>
1 participant
💡 What: Replaced sequential asynchronous fetching loops with
Promise.allingenerateStaticParamsacross thetalks/[talkId],speakers/[speakerId], andtags/[tag]dynamic pages. Added a journal entry to document the pattern.🎯 Why: The sequential loops iterated through every available conference year, fetching data one year at a time. This created a significant bottleneck during the Static Site Generation (SSG) phase of the build process.
📊 Impact: Considerably faster static generation phase during
next build, as data for all years is now fetched in parallel. The time to generate static params drops fromO(n)toO(1)in relation to the number of conference years.🔬 Measurement: Run
npm run buildand observe the reduced time to collect page data. No changes in functionality (as validated bynpm run test).PR created automatically by Jules for task 2939554868812199014 started by @anyulled
Summary by CodeRabbit
Documentation
Refactor