declare namespace Ext {
    export namespace util {
        export interface LocalStorageConfig {
            flushDelay?: number;
            id?: string;
            lazyKeys?: boolean;
            prefix?: string;
            session?: boolean;
        }

        export class LocalStorage extends Ext.Base  {
            public static supported?: boolean;
            public clear(): void;
            public getItem(key?: string): string;
            public getKeys(): string[];
            public key(index?: number): string;
            public release(): void;
            public removeItem(key?: string): void;
            public save(delay?: number): void;
            public setItem(key?: string, value?: string): void;
            public static get(id?: string | object): Ext.util.LocalStorage;
        }
    }
}