tc39/proposal-signals resource

Health v2 · maintenance only

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Adoption not part of the score

4174 stars · 73 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-29, confidence not recorded

A TC39 Stage 1 proposal to standardize a signals primitive for JavaScript, defining the core semantics of a reactive signal graph rather than a developer-facing API. It is intended as a common foundation that frameworks like Angular, Vue, Solid, Svelte, and Preact can build their reactivity systems on, with a polyfill available for experimentation.

Use cases

• standardize reactive state management in javascript
• build a framework reactivity core on a shared signal graph
• track how the tc39 signals proposal is progressing
• experiment with signals via a polyfill before standardization
• align signal implementations across javascript frameworks
• understand the proposed semantics for computed and reactive values

When to choose

• You are a framework author evaluating a common underlying signal graph to back your reactivity system
• You want to follow or contribute to the standardization effort for signals in JavaScript
• You need interoperable reactive state primitives across multiple frameworks
• You want to prototype against the proposed semantics using the companion polyfill

When to avoid

• You need a production-ready signals library with a stable developer-facing API today
• You expect the proposal's API to remain unchanged, since it is still Stage 1 and may evolve significantly
• You just want reactive state in an app without caring about framework interoperability or standardization
• You need a finished ECMAScript feature - this is not yet part of the language standard

Facets

learning-resource · maturity experimental

state-management frontend-framework developer-tools web-development frontend programming-languages developer-tools browser cross-platform tc39 javascript-proposal signals reactivity stage-1 specification ecmascript polyfill nodejs

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