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Viktor Pasynok
Viktor Pasynok

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Managing Complex Front-End Apps: Lessons Learned (and a Tool I Built to Help)

I’ve been working on large front-end applications for a while, and one of the biggest challenges isn’t just managing features—it’s managing the connections between them. Dependencies, startup order, feature toggles, conditional modules… it gets messy fast.

I recently hit a point where existing tools felt limiting. So, instead of hacking around the problem, I built a tool: app-compose.

It’s not another framework or state manager. Think of it as a lightweight system for:

  • Managing feature dependencies (both strict and optional).
  • Controlling startup sequences with minimal boilerplate.
  • Handling feature toggles without sprinkling if conditions everywhere.
  • Debugging why something started, skipped, or failed (because tracing this manually sucks).

The idea isn’t revolutionary, but it’s been a game-changer for how I organize complex apps. I also made sure the docs are clear, with simple examples and analogies to keep things beginner-friendly.

I’d love to hear how others manage this kind of complexity. What’s worked for you? What tools do you rely on?
And if you’re curious, here’s the project: GitHub link.

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