perf(posts): memoised replies, paginated comments, persistent drafts - #31
perf(posts): memoised replies, paginated comments, persistent drafts#31Ayush7614 wants to merge 2 commits into
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TokenComments filtered the whole list per top-level post (O(n^2) per render) and rendered every comment at once with a silent slice composer. Build the reply map once with groupReplies, paginate the top level at 20 with a Show more button and live status, persist the draft per token so a failed signature or reload never loses a typed comment, and announce the character count and errors to assistive tech.
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Priority: ⬇️ Low Estimated code review effort: 3 (Moderate) | ~20 minutes Change: Feature Merge Risk: ⚪ Minimal · up to The updated comment threading and draft restoration paths have no identified merge-blocking risk. 🚥 Pre-merge checks | ✅ 4 | ❌ 1❌ Failed checks (1 warning)
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In `@app/src/components/launchpad/Posts.tsx`:
- Around line 57-60: Update the useEffect that calls loadDraft(chain, token) so
it always assigns the loaded draft to body, including when the result is an
empty string; retain the POST_MAX truncation and ensure chain or token changes
cannot leave the previous body in state.
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app/src/components/launchpad/Posts.tsxapp/src/lib/launchpad/post-threads.test.tsapp/src/lib/launchpad/post-threads.ts
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…Gitlawb#31) The draft-restore effect only assigned when a draft existed, so text typed for one token stayed in state — and was submittable — after switching to a token without a draft. Always assign the loaded value, even when empty.
Vasanthdev2004
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The reply grouping and smaller initial render are worthwhile improvements. Please finish draft persistence so a saved reply retains its destination after a reload.
The 4 new tests and additional storage/grouping checks pass. The reply-target issue follows from the component state and stored format; I did not run a browser/wallet submission. Also, the new Show more control batches the already-fetched array. It does not consume #32's cursor, so those PRs still need coordination before calling this server pagination.
| // token can never leak into — and be submitted from — another token's composer. | ||
| useEffect(() => { | ||
| const t = setTimeout(() => { | ||
| setBody(loadDraft(chain, token).slice(0, POST_MAX)); |
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[P2] Restore the reply target along with the draft body. Start a reply to an existing comment, type text, then reload: this restores the text while replyTo initializes to null, so submitting sends parentId: null and creates a top-level post. The storage helper currently saves only text, so the original destination cannot be recovered. Persist and restore { body, parentId }, handle a missing/hidden parent explicitly, and cover restoring both a top-level draft and a reply draft.
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TokenComments did posts.filter(parent_id === id).slice().reverse() for every top-level post on every render (O(n^2)) and rendered all comments at once; the composer silently sliced at POST_MAX with no announcement and a failed signature flow could lose a typed 500-char draft.
This PR: new pure post-threads.ts (groupReplies O(n) + visibleTopIds pagination + per-token draft helpers) with 4 unit tests; TokenComments builds the reply map once via useMemo, paginates the top level at 20 with a Show more button + Showing X of Y status, persists/restores the draft per token, and adds aria-label/describedby, aria-live counter, and role=alert errors.
Verified locally on upstream/main base:
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