Circular Dependency Breaking Application Startup
Application fails to start with circular dependency error. Module A imports Module B which imports Module A, creating a cycle that prevents initialization. This often surfaces after refactoring when reorganizing modules.
The error message clearly indicates a circular dependency but resolving it requires understanding module relationships.
Error Messages You Might See
Common Causes
- Service A injects Service B which injects Service A
- Parent and child components/modules import each other
- Shared utility imported by both, but utility also imports both
- Misunderstanding of dependency direction (should be parent → child, not bidirectional)
- Barrel exports (index.js) importing too broadly
How to Fix It
Refactor to break cycle: extract shared logic to third module. Use lazy initialization (Lazy
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Milan Surelia
Milan Surelia is a Mobile App Developer with 5+ years of experience crafting scalable, cross-platform apps at 7Span and Meticha. At 7Span, he engineers feature-rich Flutter apps with smooth performance and modern UI. As the Co-Founder of Meticha, he builds open-source tools and developer-focused products that solve real-world problems.
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💡 Developing cross-platform apps using Flutter, Dart, and Jetpack Compose for Android, iOS, and Web.
🖋️ Sharing insights through technical writing, blogging, and open-source contributions.
🤝 Collaborating closely with designers, PMs, and developers to build seamless mobile experiences.
Notable Achievements:
🎯 Revamped the Vepaar app into Vepaar Store & CRM with a 2x performance boost and smoother UX.
🚀 Launched Compose101 — a Jetpack Compose starter kit to speed up Android development.
🌟 Open source contributions on Github & StackOverflow for Flutter & Dart
🎖️ Worked on improving app performance and user experience with smart solutions.
Milan is always happy to connect, work on new ideas, and explore the latest in technology.
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I worked with React/Node/Python
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I’m a Full-Stack Developer with over 10 years of experience building modern web and mobile applications. I enjoy working across the full product lifecycle — turning ideas into real, well-built products that are intuitive for users and scalable for businesses.
I particularly enjoy building mobile apps, modern web platforms, and solving complex technical problems in a way that keeps systems clean, reliable, and easy to maintain.
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Get HelpFrequently Asked Questions
How to detect circular dependencies?
Build system usually shows them with stack trace. Draw dependency graph: A→B→A is circular. Should be acyclic.
How to break cycles?
Extract shared code to third module C: A→C, B→C (no A↔B). Or make one unidirectional: A→B but not B→A.
When should lazy loading be used?
When you need bidirectional relationships despite good design. @Lazy delays initialization until actually used.