ec86b62d8d
Build a Map<string, ReviewComment[]> once in ReviewTab and thread it
down through DiffViewer → FileCard → HunkRows, replacing O(n) filter
calls with O(1) map lookups. With 200 comments and 5000 diff lines,
this reduces ~1M iterations per render cycle to ~5K.
Key: "${filePath}:${lineNumber}:${lineType}" for line-level comments,
"${filePath}:file" for file-level (lineNumber === null) comments.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
26 lines
910 B
TypeScript
26 lines
910 B
TypeScript
import type { ReviewComment } from "./types";
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/**
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* Build a Map keyed by `"${filePath}:${lineNumber}:${lineType}"` for line-level
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* comments, or `"${filePath}:file"` for file-level comments (lineNumber === null).
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*
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* The compound key (filePath + lineNumber + lineType) is required because
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* added and removed lines can share the same numeric position in a replacement
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* hunk (e.g., old line 10 removed, new line 10 added).
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*/
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export function buildCommentIndex(
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comments: ReviewComment[],
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): Map<string, ReviewComment[]> {
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const map = new Map<string, ReviewComment[]>();
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for (const comment of comments) {
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const key =
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comment.lineNumber != null
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? `${comment.filePath}:${comment.lineNumber}:${comment.lineType}`
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: `${comment.filePath}:file`;
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const existing = map.get(key);
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if (existing) existing.push(comment);
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else map.set(key, [comment]);
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}
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return map;
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}
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