/**
 * @module
 * @ignore
 */
export declare class LocalStorageService {
    use_cookie: boolean;
    constructor();
    /**
     * Gets the value stored at `key` or undefined if it doesn't exist
     */
    get(key: string): Promise<any>;
    /**
     * Sets the data in `value` in location `key`
     */
    set(key: string, value: any): Promise<any>;
    /**
     * Deletes data at `key`
     */
    delete(key: string): Promise<any>;
    clear(): Promise<any>;
    keys(): Promise<any>;
    safe_json_parse(str: string): any;
    /**
     *  Gets the value stored at `key` or null from cookie.
     *
     * @param name Name of cookie.
     */
    cookie_read(name: string): any;
    /**
     * Sets the value at `key` as a cookie.
     *
     * @param name Name of cookie.
     * @param value Value to store.
     * @param days Number of days to store it, default is 20 years.
     */
    cookie_write(name: string, value: string, days?: number): void;
    /**
     *  Deletes the value stored at `key` from cookie.
     *
     * @param name Name of cookie.
     */
    cookie_remove(name: string): void;
    cookie_write_multi(name: string, value: string, days?: number): void;
    cookie_remove_multi(name: string): void;
}
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