@selfcommunity/utils/lib/esm/utils/localStorage.js

Utilities to integrate a Community.

/**
 * Manage window.localStorage
 */
export class LocalStorageDB {
    /**
     * Set a key in window.localStorage
     * @param key
     * @param value
     */
    static set(key, value) {
        if (this.checkifSupport()) {
            try {
                window.localStorage.setItem(key, value);
            }
            catch (e) {
                console.error(e);
            }
        }
        else {
            console.error('No support. Use a fallback such as browser cookies or store on the server.');
        }
    }
    /**
     * Get a key from window.localStorage, else return null
     * @param key
     */
    static get(key) {
        try {
            let data = window.localStorage.getItem(key);
            if (data && typeof data === 'object') {
                return JSON.parse(data);
            }
            else {
                return data;
            }
        }
        catch (e) {
            return null;
        }
    }
    /**
     * Get all keys
     */
    static getAll() {
        let array = [];
        for (let i = 0; i < window.localStorage.length; i++) {
            let key = localStorage.key(i);
            array.push(this.get(key));
        }
        return array;
    }
    /**
     * Remove a single item from window.localStorage
     * @param key
     */
    static remove(key) {
        try {
            window.localStorage.removeItem(key);
            if (window.localStorage.length == 0) {
                this.clearAll();
            }
        }
        catch (e) {
            console.error(e);
        }
        finally {
            if (this.get(key)) {
                delete window.localStorage[key];
                if (window.localStorage.length == 0) {
                    this.clearAll();
                }
            }
        }
    }
    /**
     * Clear all keys from window.localStorage
     */
    static clearAll() {
        try {
            window.localStorage.clear();
        }
        catch (e) {
            console.error(e);
        }
    }
    /**
     * Check if localStorage is supported
     */
    static checkifSupport() {
        try {
            return 'localStorage' in window && window['localStorage'] !== null;
        }
        catch (e) {
            return false;
        }
    }
}