The idea: make Effect's runtime observable — a visual tool for its concurrency model (fibers, scheduling, delays). Meant for learning and experimentation.
Features:
- Fiber tree (parent-child relationships)
- Timeline (concurrency, delays, running vs suspended fibers)
- Execution log (fork, join, errors, retries, finalizers)
- Code editor with example programs
v1 uses manual instrumentation with explicit tracing wrappers. v2 is planned with runtime hooks (Supervisor, Tracer) for automatic observability.
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[ 3.8 ms ] story [ 17.2 ms ] threadFeatures: - Fiber tree (parent-child relationships) - Timeline (concurrency, delays, running vs suspended fibers) - Execution log (fork, join, errors, retries, finalizers) - Code editor with example programs
v1 uses manual instrumentation with explicit tracing wrappers. v2 is planned with runtime hooks (Supervisor, Tracer) for automatic observability.
Demo: https://effect-viz.vercel.app Repo: https://github.com/topheman/effect-viz