react-use/lib/useLocalStorage.js

Collection of React Hooks

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
var react_1 = require("react");
var util_1 = require("./util");
var useLocalStorage = function (key, initialValue, raw) {
    if (!util_1.isClient) {
        return [initialValue, function () { }];
    }
    var _a = react_1.useState(function () {
        try {
            var localStorageValue = localStorage.getItem(key);
            if (typeof localStorageValue !== 'string') {
                localStorage.setItem(key, raw ? String(initialValue) : JSON.stringify(initialValue));
                return initialValue;
            }
            else {
                return raw ? localStorageValue : JSON.parse(localStorageValue || 'null');
            }
        }
        catch (_a) {
            // If user is in private mode or has storage restriction
            // localStorage can throw. JSON.parse and JSON.stringify
            // can throw, too.
            return initialValue;
        }
    }), state = _a[0], setState = _a[1];
    react_1.useEffect(function () {
        try {
            var serializedState = raw ? String(state) : JSON.stringify(state);
            localStorage.setItem(key, serializedState);
        }
        catch (_a) {
            // If user is in private mode or has storage restriction
            // localStorage can throw. Also JSON.stringify can throw.
        }
    }, [state]);
    return [state, setState];
};
exports.default = useLocalStorage;