react-native-applifecycle/dist/AndroidLifecycleModule.js

⚛ Enhances the reliability of managing app lifecycles across iOS and Android platforms, ensuring consistent behavior regarding foreground and background states.

// MIT License
// Copyright (c) 2024 Douglas Nassif Roma Junior
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
// SOFTWARE.
import { NativeModules, NativeEventEmitter, AppState, } from 'react-native';
const NATIVE_MODULE_NAME = 'ReactNativeAppLifecycle';
const ON_START_EVENT = 'ON_START';
const ON_STOP_EVENT = 'ON_STOP';
const CHANGE_EVENT_HANDLERS = [];
let currentState = AppState.currentState;
const subscribeToEvent = (handler, handlers) => {
    handlers.push(handler);
    return {
        remove: () => {
            const index = handlers.indexOf(handler);
            if (index !== -1) {
                handlers.splice(index, 1);
            }
        },
    };
};
const addEventListener = (event, handler) => {
    if (event === 'change') {
        return subscribeToEvent(handler, CHANGE_EVENT_HANDLERS);
    }
    return AppState.addEventListener(event, handler);
};
const dispatchEvent = (oldState, newState) => {
    if (oldState === newState) {
        return;
    }
    CHANGE_EVENT_HANDLERS.forEach(handler => handler(newState));
};
const eventEmitter = new NativeEventEmitter(NativeModules[NATIVE_MODULE_NAME]);
eventEmitter.addListener(NATIVE_MODULE_NAME, (event) => {
    const oldState = currentState;
    switch (event.type) {
        case ON_START_EVENT:
            currentState = 'active';
            break;
        case ON_STOP_EVENT:
            currentState = 'background';
            break;
        default:
            currentState = 'unknown';
    }
    dispatchEvent(oldState, currentState);
});
const AndroidLifecycleModule = {
    addEventListener,
    get currentState() {
        return currentState;
    },
    get isAvailable() {
        return currentState !== 'unknown';
    },
};
export default AndroidLifecycleModule;
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