Repo map tool with dependency graph and PageRank

[tjdoomer]

Summary

The biggest feature — a codebase-aware navigation tool that pre-digests the project for the model.

• Symbol extraction: regex-based for TS/JS/Python/generic (behind ISymbolExtractor interface for tree-sitter upgrade later)
• Dependency graph: directed import graph with iterative PageRank (20 iterations, damping 0.85)
• Ranking: TF-IDF relevance to query (0.6) + PageRank centrality (0.3) + file recency (0.1)
• Indexing: fdir crawling, content-hash caching, lazy build on first query, auto-rebuild when >20% files change
• Output: tree-style file→symbol hierarchy within configurable token budget (default 2000)

Zero new dependencies.

New files

• packages/core/src/indexing/types.ts — shared interfaces
• packages/core/src/indexing/symbolExtractor.ts — regex extraction
• packages/core/src/indexing/dependencyGraph.ts — import graph + PageRank
• packages/core/src/indexing/symbolRanker.ts — TF-IDF + combined scoring
• packages/core/src/indexing/repoIndex.ts — orchestrator + cache
• packages/core/src/tools/repoMap.ts — tool entry point

Test plan

• All 1873 tests pass
• Type-check clean
• Full workspace build clean
• Manual: repo_map query against Delta-code's own codebase

[coderabbitai]

Warning

Rate limit exceeded

@tjdoomer has exceeded the limit for the number of commits that can be reviewed per hour. Please wait 6 minutes and 48 seconds before requesting another review.

Your organization is not enrolled in usage-based pricing. Contact your admin to enable usage-based pricing to continue reviews beyond the rate limit, or try again in 6 minutes and 48 seconds.

⌛ How to resolve this issue?

After the wait time has elapsed, a review can be triggered using the @coderabbitai review command as a PR comment. Alternatively, push new commits to this PR.

We recommend that you space out your commits to avoid hitting the rate limit.

🚦 How do rate limits work?

CodeRabbit enforces hourly rate limits for each developer per organization.

Our paid plans have higher rate limits than the trial, open-source and free plans. In all cases, we re-allow further reviews after a brief timeout.

Please see our FAQ for further information.

ℹ️ Review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro

Run ID: 7b7d7274-937e-4be9-9146-49ab13fcb6c0

📥 Commits

Reviewing files that changed from the base of the PR and between 10c546c and 56fcd58.

📒 Files selected for processing (8)

• docs/roadmap/08-repo-map.md
• packages/core/src/config/config.ts
• packages/core/src/indexing/dependencyGraph.ts
• packages/core/src/indexing/repoIndex.ts
• packages/core/src/indexing/symbolExtractor.ts
• packages/core/src/indexing/symbolRanker.ts
• packages/core/src/indexing/types.ts
• packages/core/src/tools/repoMap.ts

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch feature/repo-map

---

Thanks for using CodeRabbit! It's free for OSS, and your support helps us grow. If you like it, consider giving us a shout-out.

❤️ Share

• X
• Mastodon
• Reddit
• LinkedIn

_{Comment @coderabbitai help to get the list of available commands and usage tips.}