import { NetworkIdType } from '@sonarwatch/portfolio-core';
export type MaybePromise<T> = T | Promise<T>;
export type StorageValue = null | string | number | boolean | object | (null | string | number | boolean | object)[];
export type TransactionOptions = Record<string, string | number | boolean | object>;
export type Item = {
    key: string;
    value: StorageValue;
};
export declare abstract class Storage {
    abstract dispose(): Promise<void>;
    abstract get(key: string, prefix?: string, networkId?: NetworkIdType, opts?: TransactionOptions): MaybePromise<StorageValue | undefined>;
    abstract getMany(keys: string[], prefix?: string, networkId?: NetworkIdType, opts?: TransactionOptions): MaybePromise<Array<StorageValue | undefined>>;
    abstract getAll(prefix?: string, networkId?: NetworkIdType, opts?: TransactionOptions): MaybePromise<Item[]>;
    abstract set(key: string, value: StorageValue, prefix?: string, networkId?: NetworkIdType, opts?: TransactionOptions): MaybePromise<void>;
    abstract setMany(items: Item[], prefix?: string, networkId?: NetworkIdType, opts?: TransactionOptions): MaybePromise<void>;
    abstract del(key: string, prefix?: string, networkId?: NetworkIdType, opts?: TransactionOptions): MaybePromise<void>;
    abstract delMany(keys: string[], prefix?: string, networkId?: NetworkIdType, opts?: TransactionOptions): MaybePromise<void>;
}