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Codyn
FileEditView
Wed May 6 1:09 PM
Codyn Intelligence — facebook/react
Repo Context
Full-File Loading
Control-Flow CAG
Dependency Graph
Security Signals
Ask Your RepoJust now
How does Fiber reconciliation work?
Agentic CAG loaded ReactFiberWorkLoop.js & ReactFiberScheduler.js
Architecture2m ago
Repository Architecture Diagram
Mapped 14 modules: Core Reconciler → Renderer → Scheduler
Code Review12m ago
PR #28410 Context-Aware Review
Analyzed FiberNode pool allocation impact on memory footprint
Security Audit1h ago
Security Prioritization Audit
1 Medium risk signal: Unsanitized DOM ref prop in SSR hydration
Tech Stack2h ago
Tech Stack & Dependency Tree
TypeScript 5.8 · Rollup · Jest · Babel · Hermes Engine
Dev IntelYesterday
Developer Intel & Ownership
Core maintainers: gaearon, acdlite, sebmarkbage, facebook-bot
Agentic CAG Active8 full files in context window
USER PROMPT

"How does Fiber reconciliation work and where is the main scheduler loop?"

Codyn Agentic CAG Answer

Fiber reconciliation starts at ReactFiberWorkLoop.js. Rather than retrieving disconnected snippets, Codyn loaded complete source files:

1. workLoopSync()ReactFiberWorkLoop.js:1620
↳ calls performUnitOfWork(workInProgress)
2. beginWork(current, workInProgress, renderLanes)ReactFiberBeginWork.js:3840
↳ constructs Fiber child nodes & yields control to Scheduler

Complete dependency tree retains control-flow context. Priority lanes are calculated via getHighestPriorityLane().

Files evaluated: ReactFiberWorkLoop.js, ReactFiberBeginWork.js, ReactFiberHooks.js
Triage

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Agentic CAGArchitecture MapsContext Code ReviewSecurity AuditTech Stack AnalyzerDue Diligence
Today · 42 repository signals triaged
Priority
4
Security: Unsanitized DOM prop in SSR
Architecture: Circular dependency in Auth module
Follow-up
7
Code Review: FiberNode memory pool allocation
PR #28410 Context Impact Analysis
Tech Stack
18
TypeScript 5.8 · Rollup · Hermes · Jest · Babel
Archived
13
Clean dependencies · Passed 38 security checks
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34 files mapped
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4 priority findings
04
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Codyn gave our engineering team four hours of their week back. Understanding complex legacy codebases without manual AST parsing or local clones feels effortless.
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Agentic CAG completely transformed how we perform code reviews. It understands cross-file dependencies, controller bindings, and edge-case logic flaws in seconds.
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Elena Rostova
Elena Rostova
@erostova_sec
The security triage feature surfaced an unsanitized DOM prop vector in our SSR hydration flow that standard static security scanners missed entirely.
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Architecture mapping that actually reflects real control flow! What used to take new engineering hires days of manual code browsing now takes under 5 minutes.
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FAQQuestions & Answers

Frequently Asked Questions

Everything you need to know about Codyn and Agentic CAG architecture.

Yes. Through Agentic CAG (Context-Augmented Generation), Codyn loads full relevant files into large context windows rather than retrieving fragmented text chunks. This allows the model to preserve structural, dependency, and control-flow relationships across the entire project.

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