import "../../_dnt.polyfills.js";
import * as $ from "../../deps/scale.js";
import { AsyncMemo } from "../memo.js";
import { TimedMemo, WeakMemo } from "../mod.js";
export declare abstract class CacheBase {
    readonly signal: AbortSignal;
    constructor(signal: AbortSignal);
    abstract _getRaw(key: string, init: () => Promise<Uint8Array>): Promise<Uint8Array>;
    abstract _has(key: string): Promise<boolean>;
    hasMemo: AsyncMemo<string, boolean>;
    has(key: string): Promise<boolean>;
    rawMemo: WeakMemo<string, Uint8Array>;
    getRaw(key: string, init: () => Promise<Uint8Array>): Promise<Uint8Array>;
    decodedMemo: Map<$.AnyCodec, WeakMemo<string, object>>;
    get<T extends object>(key: string, $value: $.Codec<T>, init: () => Promise<T>): Promise<T>;
    stringMemo: TimedMemo<string, string>;
    getString(key: string, ttl: number, init: () => Promise<string>): Promise<string>;
}