## The Architectural Context:
I’ve spent years working on high-performance websites and legacy CMS modernizations. I found that existing reactive frameworks often introduce excessive memory overhead or rigid DSLs that don't play well with bespoke, performant, or legacy-injected code. I wanted to see if I could build a "toolbox" instead of a "black box" that stays small.
## Design Philosophy & Trade-offs:
- Why `Proxy`? I initially explored `Object.defineProperty` to minimize bundle size, but I eventually pivoted to `Proxy`. While it adds a tiny bit of runtime trap cost, the engine-level optimizations in modern browsers make the performance impact negligible for UI cycles. More importantly, it allowed for clean, dynamic object handling without the "magic" workarounds required by descriptor-based reactivity. - Standards-First: I’m building Signet to be a thin orchestration layer. It currently leverages `@preact/signals-core` for its robustness, but the architecture is designed as a drop-in reactive layer. My roadmap is to align the internal primitive with the upcoming [TC39 Signals Proposal](https://github.com/tc39/proposal-signals), treating Signet as a bridge to native browser reactivity as it matures.
## Why did I build Signet instead of using [Alpine / petite-vue]?
The `petite-vue` Gap: Petite-vue was the gold standard for "sprinkling" interactivity, but with it no longer being maintained, there's a real need for a modern alternative that bridges the gap between pure HTML and heavy SPA frameworks.
Solving "DOM Pollution": A common friction point I found when moving to Alpine was the "messy DOM"—state-heavy applications often left behind excessive attributes and listeners that made the DOM feel cluttered. Signet is architected to be "DOM-transparent," ensuring that reactive bindings don't leave a trail of debris when components unmount.
Signal-First Architecture: By building Signet directly on a Signal primitive, I’m opting for a "Reactive-first" model. This is fundamentally cleaner than the directive-heavy, "magic-attribute" approach of previous libraries, leading to more predictable data flows and easier debugging.
## Memory Stability:
I ran a 10,000-component mount/unmount stress test using WeakRef to verify garbage collection. The results confirmed stable heap usage, proving that you can achieve leak-free reactivity with Proxy if you manage the dependency graph lifecycle correctly.
## A Note on Implementation:
I approached the development of Signet as a human architect utilizing AI agents for the implementation. My role was defining the constraints (e.g., bundle size limits, dependency lifecycle logic, memory stability) and enforcing the "clean DOM" architecture, while the AI handled the boilerplate and repetitive logic. This allowed me to iterate on the internal signal graph and performance testing at a speed that would have been impossible manually. This project is a deliberate experiment in "AI-assisted architecture"—where the human provides the technical constraints and domain expertise, and the AI acts as a high-speed implementation engine. I also let the AI implementor construct the full document site at https://sntran.github.io/signet.js/.
