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smart-city-digital-twin-mar…/smart-app-city/frontend/node_modules/fbjs/lib/emptyFunction.js.flow
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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/**
* Copyright (c) 2013-present, Facebook, Inc.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*
* @providesModule emptyFunction
* @flow
*/
export type FunctionReturning<+T> = (...args: $ReadOnlyArray<mixed>) => T;
export type EmptyFunctionType = {
thatReturns: <T>(x: T) => FunctionReturning<T>,
thatReturnsFalse: FunctionReturning<false>,
thatReturnsTrue: FunctionReturning<true>,
thatReturnsNull: FunctionReturning<null>,
thatReturnsThis: FunctionReturning<mixed>,
thatReturnsArgument: <T>(x: T) => T,
(...args: $ReadOnlyArray<mixed>): void,
};
function makeEmptyFunction<T>(arg: T): (...args: Array<any>) => T {
return function () {
return arg;
};
}
/**
* This function accepts and discards inputs; it has no side effects. This is
* primarily useful idiomatically for overridable function endpoints which
* always need to be callable, since JS lacks a null-call idiom ala Cocoa.
*/
const emptyFunction = function () {};
emptyFunction.thatReturns = makeEmptyFunction;
emptyFunction.thatReturnsFalse = makeEmptyFunction(false);
emptyFunction.thatReturnsTrue = makeEmptyFunction(true);
emptyFunction.thatReturnsNull = makeEmptyFunction(null);
emptyFunction.thatReturnsThis = function () {
return this;
};
emptyFunction.thatReturnsArgument = function (arg) {
return arg;
};
module.exports = (emptyFunction: EmptyFunctionType);