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Small signals library

2 starsTypeScript

Vellyr – small JavaScript non-lazy signals library

by bloomca·Mar 25, 2026·2 points·0 comments
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AI Analysis

●MidShip It

Yet another signals library when Preact and Solid already dominate the space.

Strengths
  • •Eager evaluation avoids lazy computation pitfalls in complex dependency graphs
  • •Explicit equality functions give fine-grained control over reactivity triggers
  • •No proxies means simpler debugging and better browser compatibility
Weaknesses
  • •Zero differentiation in a saturated signals library market
  • •No clear advantage over established options like Preact Signals or Solid
Target Audience

Frontend developers, UI library authors

Similar To

Preact Signals · Solid Signals · Vue Reactivity

Post Description

During my explorations of UI libraries and atomic updates I came to a conclusion that signals is one the best composable state primitives for that task.

Observables are great as well, but they are fundamentally more complicated, so I built a super simple eager signals library with explicit derived/effects semantics (so, no proxies) and wanted to share here.

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