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react-zero-state

v1.0.3

Published

A simple state management library for React using signals

Readme

⚛️ react-zero-state

Uma biblioteca leve de gerenciamento de estado para React usando sinais (signals), com foco em simplicidade e reatividade.


🚀 Instalação

npm install react-zero-state
🧠 Como funciona

react-zero-state permite criar e compartilhar estados reativos fora dos componentes React — como um useState global, mas sem boilerplate ou Redux.
🛠 Exemplo básico
import { createSignal, useSignal } from 'react-zero-state';

const countSignal = createSignal(0);

function Counter() {
  const [count, setCount] = useSignal(countSignal);

  return (
    <div>
      <p>Contagem: {count}</p>
      <button onClick={() => setCount(c => c + 1)}>Incrementar</button>
    </div>
  );
}
📄 Exemplos de uso
✅ Paginação
const pageSignal = createSignal(1);

function Pagination() {
  const [page, setPage] = useSignal(pageSignal);

  return (
    <>
      <p>Página atual: {page}</p>
      <button onClick={() => setPage(p => Math.max(1, p - 1))}>Anterior</button>
      <button onClick={() => setPage(p => p + 1)}>Próxima</button>
    </>
  );
}
✅ Modal simples
const modalOpenSignal = createSignal(false);

function Modal() {
  const [isOpen, setIsOpen] = useSignal(modalOpenSignal);

  return isOpen ? (
    <div className="modal-backdrop">
      <div className="modal-content">
        <h3>Modal aberto</h3>
        <button onClick={() => setIsOpen(false)}>Fechar</button>
      </div>
    </div>
  ) : (
    <button onClick={() => setIsOpen(true)}>Abrir Modal</button>
  );
}
🔧 API
createSignal<T>(initialValue: T)

Cria um sinal reativo.

Retorna:

get(): T – Retorna o valor atual

set(value: T | (prev: T) => T): void – Atualiza o valor

subscribe(listener: () => void): () => void – Escuta mudanças no valor

useSignal(signal)

Hook React para conectar o sinal ao componente.

const [value, setValue] = useSignal(signal);

📦 Quando usar?

* Substituir estados globais simples (sem Redux, Zustand ou Context API)

* Evitar prop-drilling

* Compartilhar estado entre vários componentes de forma reativa

📝 Licença

MIT © Wemerson Lucas da Silva Pereira
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