import type { Finalizable, Initializable, KeyValueStorage } from '@solid/community-server';
export interface BaseKeyValueStorageOptions {
    tableName?: string;
    namespace?: string;
}
export interface BaseKeyValueStorageRow {
    key: string;
    value: unknown;
}
export declare abstract class BaseKeyValueStorage<T = unknown> implements KeyValueStorage<string, T>, Initializable, Finalizable {
    protected readonly logger: import("global-logger-factory").Logger<unknown>;
    protected readonly tableName: string;
    protected readonly namespace: string;
    private ready;
    protected constructor(options: BaseKeyValueStorageOptions);
    protected setReady(ready: Promise<void>): void;
    initialize(): Promise<void>;
    finalize(): Promise<void>;
    has(key: string): Promise<boolean>;
    get(key: string): Promise<T | undefined>;
    set(key: string, value: T): Promise<this>;
    delete(key: string): Promise<boolean>;
    entries(): AsyncIterableIterator<[string, T]>;
    protected toStorageKey(key: string): string;
    protected validateAndSerialize(value: T, key: string): string;
    protected parseValue(raw: unknown): T | undefined;
    protected abstract closeStorage(): Promise<void>;
    protected abstract hasValue(key: string): Promise<boolean>;
    protected abstract selectValue(key: string): Promise<unknown | undefined>;
    protected abstract upsertValue(key: string, payload: string): Promise<void>;
    protected abstract deleteValue(key: string): Promise<boolean>;
    protected abstract selectEntries(prefix: string): Promise<BaseKeyValueStorageRow[]>;
}