import type { StorageProps, StorageConfig, StorageValue, StorageCallback, StorageObjectValue, StorageArrayValue } from './type';
/**
 * @title StorageClass
 * @description 对 LocalStorage / SessionStorage 进行二次封装, 添加类型的支持
 */
export declare class StorageClass implements StorageProps {
    length: number;
    storage: Storage;
    defaultValue?: StorageValue;
    setCallback?: StorageCallback;
    getCallback?: StorageCallback;
    constructor(storage: Storage, config?: StorageConfig);
    getItem(key: string): string | null;
    get(key: string, defaultValue?: StorageValue): StorageValue;
    getNumber(key: string, defaultValue?: number): number;
    getString(key: string, defaultValue?: string): string;
    getObject<T>(key: string, defaultValue?: Record<string, unknown>): StorageObjectValue<T>;
    getArray<T>(key: string, defaultValue?: StorageArrayValue<T>): StorageArrayValue<T>;
    setItem(key: string, value: StorageValue): void;
    key(index: number): string | null;
    removeItem(key: string): void;
    clear(): void;
}
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