export declare class CachedKeyDecoder {
    readonly maxKeyLength: number;
    readonly maxLengthPerKey: number;
    private readonly caches;
    constructor(maxKeyLength?: number, maxLengthPerKey?: number);
    canBeCached(byteLength: number): boolean;
    private get;
    private store;
    decode(bytes: Uint8Array, inputOffset: number, byteLength: number): string;
}