react-native-useappstate/lib/index.js

React Native AppState hook

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
const react_1 = require("react");
const react_native_1 = require("react-native");
const index = () => {
    const [appState, setAppState] = (0, react_1.useState)(null);
    const onAppStateChange = (state) => {
        setAppState(state);
    };
    (0, react_1.useEffect)(() => {
        const listener = react_native_1.AppState.addEventListener("change", onAppStateChange);
        return () => {
            try {
                // @ts-ignore
                if (listener instanceof Object) { //Use new way of removing event listener
                    // @ts-ignore
                    listener === null || listener === void 0 ? void 0 : listener.remove();
                }
                else { //Use deprecated way of removing event listener
                    // @ts-ignore
                    react_native_1.AppState === null || react_native_1.AppState === void 0 ? void 0 : react_native_1.AppState.removeEventListener("change", onAppStateChange);
                }
            }
            catch (_a) {
                console.warn("react-native-useappstate problem with removing listener");
            }
        };
    }, []);
    return appState;
};
exports.default = index;