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vallafederico
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solid-core-primitives

Explain SolidJS reactivity primitives including signals, effects, stores, and memos.

Updated Jan 4, 2026
Search Tags:#components#signals#memos#reactivity#effects#stores#solidjs
One-click install
npx skills add https://github.com/vallafederico/solid-ai-rules --skill solid-core-primitives
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: solid-core-primitives
Source: https://github.com/vallafederico/solid-ai-rules/tree/main/.claude/skills/solid-core-primitives
Command: npx skills add https://github.com/vallafederico/solid-ai-rules --skill solid-core-primitives

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

This Skill clarifies the core reactivity primitives in SolidJS, helping developers understand how to build performant, fine-grained applications without component re-renders.

Core Features & Use Cases

  • Fine-Grained Reactivity: Understand how SolidJS updates only the necessary DOM nodes.
  • Signals: Learn to create and manage reactive state with createSignal.
  • Components: Grasp that SolidJS components run once and rely on reactive primitives for updates.
  • Effects: Implement side effects and subscriptions using createEffect.
  • Stores: Manage complex state with direct property access and path-based updates.
  • Memos: Create cached, computed values with createMemo.
  • Use Case: Quickly onboard new team members to SolidJS by providing them with a clear, concise guide to its fundamental building blocks.

Quick Start

Explain how SolidJS components differ from React components in terms of re-rendering.

Frequently Asked Questions about solid-core-primitives

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do SolidJS components differ from React components in terms of re-rendering?▼

SolidJS components run once and never re-render, relying entirely on fine-grained reactive primitives like signals to update only the specific DOM nodes that change, unlike React's component-level reconciliation.

How does fine-grained reactivity work in SolidJS?▼

Fine-grained reactivity in SolidJS works through automatic dependency tracking, where signals trigger updates directly to the affected DOM nodes without requiring parent component re-renders or virtual DOM diffing.

When should I use stores instead of signals for SolidJS state management?▼

Use SolidJS stores for managing complex nested state objects, as they provide direct property access and path-based updates, whereas signals are better suited for simple primitive values.

What is the difference between createMemo and createEffect in SolidJS?▼

createMemo creates a cached computed value for synchronous derived state, while createEffect handles side effects and subscriptions, running after the DOM updates to manage external interactions.

Can I use SolidJS reactivity primitives without React hooks dependencies?▼

Yes, SolidJS primitives are standalone and require no dependencies. They replace React hooks entirely by offering automatic dependency tracking and direct DOM updates without the need for hook rules or effect arrays.

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