e30ae8ed09
- App.tsx: full navigation (Auth stack + Main tabs with 5 screens) - Auth: LoginScreen, RegisterScreen, ForgotPasswordScreen - HomeScreen: dashboard with IoT metrics, weather widget, alerts, quick actions, sensors - MapScreen: interactive map with layer toggles (6 layers) - MarketplaceScreen: categories (6), products (5), search - ChatScreen: AI chat with quick prompts (4), bot responses - ProfileScreen: user info, stats, menu (9 items), logout - AlertsScreen: alert list with severity, acknowledge - SensorsScreen: sensor list with type filters (6 types), search - ZonesScreen: zone cards with stats - SettingsScreen: language picker (FR/EN/ES/DE), privacy, about - Stores: iotStore (sensors, zones, alerts), notificationStore, uiStore + i18n - Hooks: useSensors, useAlerts, useNotifications, useLocation - Components: Card, Button, LoadingSpinner, ErrorBoundary, Header - Services: iotService, notificationService (with axios API client) - Utils: formatters (temp, AQI, noise, dates), validators (email, password, IBAN) - Theme: colors.ts with full design system (Blue Ocean palette) - Ditto: fixed MongoDB connection, new JWT secrets, official gateway image
40 lines
972 B
Markdown
40 lines
972 B
Markdown
# use-latest-callback
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React hook which returns the latest callback without changing the reference.
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This is useful for scenarios such as event listeners where you may not want to resubscribe when the callback changes.
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## Installation
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Open a Terminal in the project root and run:
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```sh
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npm install use-latest-callback
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```
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## Usage
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The `useLatestCallback` hook accepts a function as its argument and returns a function that preserves its reference across renders.
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```js
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import useLatestCallback from 'use-latest-callback';
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// ...
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function MyComponent() {
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const callback = useLatestCallback((value) => {
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console.log('Changed', value);
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});
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React.useEffect(() => {
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someEvent.addListener(callback);
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return () => someEvent.removeListener(callback);
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}, [callback]);
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return <>{/* whatever */}</>;
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}
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```
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It's important to note that the callback is not intended to be called during the render phase. Only call the callback in response to an event.
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