📦 Installation

npm install react-ref-store
# or
pnpm add react-ref-store
# or
yarn add react-ref-store

🤔 When to Use

• When parent components need to access DOM elements of child components
• When you want to manage DOM in a React-friendly way without using querySelector
• When you need type-safe access to different DOM element types
• Examples: tabs, menus, animation indicators, etc.

📖 API

1. createRefsStore<T>()

A factory function that creates Context, Provider, and Hook all at once with type safety.

// Define your refs type
type TabRefs = {
  'tab-button': HTMLButtonElement;
  'tab-panel': HTMLDivElement;
};

const TabRefsStore = createRefsStore<TabRefs>();

// Returns
{
  Provider,  // Context Provider component
  useStore,  // Hook to get the store
}

2. useRefsStore<T>()

Creates a store that manages refs as a Map data structure with type safety. (Can be used standalone without Context)

type SearchRefs = {
  'search-field': HTMLDivElement;
  'search-input': HTMLInputElement;
};

function MyComponent() {
  const refsStore = useRefsStore<SearchRefs>();
  // Use Map API: refsStore.get(), refsStore.has(), etc.
}

3. useRegisterRef<T, K>()

A hook that registers a DOM element's ref to the Store with type safety.

const ref = useRegisterRef(refsStore, 'unique-key');
return <div ref={ref}>...</div>;

💡 Usage Examples

Basic Usage with Type Safety

// 1. Define your refs type
type TabRefs = {
  'tab-button': HTMLButtonElement;
  'tab-panel': HTMLDivElement;
};

// 2. Create Store
const TabRefsStore = createRefsStore<TabRefs>();

// 3. Wrap with Provider
export function TabGroup({ children }) {
  return (
    <TabRefsStore.Provider>
      {children}
    </TabRefsStore.Provider>
  );
}

// 4. Register in child components
function Tab({ id, children }) {
  const store = TabRefsStore.useStore();
  const ref = useRegisterRef(store, id); // TypeScript infers correct element type
  
  return <button ref={ref}>{children}</button>;
}

// 5. Use the Store
function TabIndicator({ activeTabId }) {
  const store = TabRefsStore.useStore();
  const activeTab = store.get(activeTabId); // Returns HTMLButtonElement | undefined
  
  if (!activeTab) return null;
  
  const rect = activeTab.getBoundingClientRect();
  // Calculate position and render indicator...
}

External Store Injection

// You can inject an external store into the Provider
function CustomTabGroup({ children, externalStore }) {
  return (
    <TabRefsStore.Provider refsStore={externalStore}>
      {children}
    </TabRefsStore.Provider>
  );
}

Direct Store Creation

When using standalone without Context:

type FormRefs = {
  'submit-btn': HTMLButtonElement;
  'email-input': HTMLInputElement;
};

function StandaloneComponent() {
  const refsStore = useRefsStore<FormRefs>();
  
  // Use Map API with type safety
  const buttonRef = refsStore.get('submit-btn'); // HTMLButtonElement | undefined
  const hasInput = refsStore.has('email-input'); // boolean
  
  return <ChildComponent refsStore={refsStore} />;
}

Advanced Type Safety

// Different element types for different keys
type ComplexRefs = {
  'header': HTMLHeaderElement;
  'nav': HTMLNavElement;
  'main-content': HTMLMainElement;
  'footer': HTMLFooterElement;
  'submit-button': HTMLButtonElement;
  'search-input': HTMLInputElement;
};

const LayoutStore = createRefsStore<ComplexRefs>();

function Header() {
  const store = LayoutStore.useStore();
  const ref = useRegisterRef(store, 'header'); // RefObject<HTMLHeaderElement>
  return <header ref={ref}>Header</header>;
}

function SearchBar() {
  const store = LayoutStore.useStore();
  const ref = useRegisterRef(store, 'search-input'); // RefObject<HTMLInputElement>
  return <input ref={ref} type="search" />;
}

Store API (RefsMap)

interface RefsMap<T extends Record<string, HTMLElement>> {
  register<K extends keyof T>(key: K, element: T[K] | undefined): void;   // Register element
  unregister<K extends keyof T>(key: K): void;                             // Unregister element
  get<K extends keyof T>(key: K): T[K] | undefined;                        // Get element
  has<K extends keyof T>(key: K): boolean;                                 // Check if element exists
  clear(): void;                                                           // Remove all elements
}

Provider API

interface ProviderProps<T extends Record<string, HTMLElement>> {
  children: ReactNode;
  refsStore?: RefsMap<T>; // Optional external store injection
}

useRegisterRef Options

interface UseRegisterRefOptions {
  isDefer?: boolean;   // Defer registration using requestAnimationFrame (default: true)
  isEnabled?: boolean; // Enable/disable registration (default: true)
}

Pattern Selection Guide

• When Context is needed: Use createRefsStore<T>()
• For local usage without Context: Use useRefsStore<T>()
• Use only inside Provider: useStore()
• Need external store control: Pass refsStore prop to Provider

Type Safety Benefits

• Key validation: TypeScript ensures you only use valid keys
• Element type inference: Each key maps to the correct DOM element type
• Method type safety: All store methods are properly typed
• Ref type safety: useRegisterRef returns the correct ref type for each key

📄 License

MIT

🤝 Contributing

Contributions are always welcome! Please read the contribution guidelines first.

🐛 Issues

If you find a bug, please create an issue here.