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smart-city-digital-twin-mar…/smart-app-city/frontend/node_modules/command-exists/README.md
Eric FELIXINE e30ae8ed09 feat(smart-app): implement complete mobile app MVP
- 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
2026-06-01 18:00:35 -04:00

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command-exists
==============
node module to check if a command-line command exists
## installation
```bash
npm install command-exists
```
## usage
### async
```js
var commandExists = require('command-exists');
commandExists('ls', function(err, commandExists) {
if(commandExists) {
// proceed confidently knowing this command is available
}
});
```
### promise
```js
var commandExists = require('command-exists');
// invoked without a callback, it returns a promise
commandExists('ls')
.then(function(command){
// proceed
}).catch(function(){
// command doesn't exist
});
```
### sync
```js
var commandExistsSync = require('command-exists').sync;
// returns true/false; doesn't throw
if (commandExistsSync('ls')) {
// proceed
} else {
// ...
}
```
## changelog
### v1.2.7
Removes unnecessary printed output on windows.
### v1.2.6
Small bugfixes.
### v1.2.5
Fix windows bug introduced in 1.2.4.
### v1.2.4
Fix potential security issue.
### v1.2.0
Add support for promises
### v1.1.0
Add synchronous version
### v1.0.2
Support for windows