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
65 lines
1.3 KiB
Markdown
65 lines
1.3 KiB
Markdown
# define-lazy-prop [](https://travis-ci.org/sindresorhus/define-lazy-prop)
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> Define a [lazily evaluated](https://en.wikipedia.org/wiki/Lazy_evaluation) property on an object
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Useful when the value of a property is expensive to generate, so you want to delay the computation until the property is needed. For example, improving startup performance by deferring nonessential operations.
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## Install
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```
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$ npm install define-lazy-prop
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```
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## Usage
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```js
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const defineLazyProp = require('define-lazy-prop');
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const unicorn = {
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// …
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};
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defineLazyProp(unicorn, 'rainbow', () => expensiveComputation());
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app.on('user-action', () => {
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doSomething(unicorn.rainbow);
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});
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```
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## API
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### defineLazyProp(object, propertyName, fn)
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#### object
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Type: `Object`
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Object to add property to.
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#### propertyName
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Type: `string`
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Name of the property to add.
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#### fn
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Type: `Function`
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Called the first time `propertyName` is accessed. Expected to return a value.
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## Related
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- [lazy-value](https://github.com/sindresorhus/lazy-value) - Create a lazily evaluated value
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- [import-lazy](https://github.com/sindresorhus/import-lazy) - Import a module lazily
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- [p-lazy](https://github.com/sindresorhus/p-lazy) - Create a lazy promise
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## License
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MIT © [Sindre Sorhus](https://sindresorhus.com)
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