import { ITokenizer } from './i-tokenizer.js';
import { LruCache } from '../../utils/lru-cache.js';
/**
 * Remote tokenizer that uses Google AI's countTokens REST endpoint —
 * addresses issue #124's GoogleAITokenizer requirement.
 *
 * Network calls are memoized in an LruCache with a TTL so repeated
 * token counts don't re-hit the API. If the request fails (network,
 * 4xx, 5xx) we surface the error to the caller — TokenCounter above
 * is responsible for deciding whether to fall back to a local
 * tokenizer.
 */
export declare class GoogleAITokenizer implements ITokenizer {
    readonly modelName: string;
    private readonly apiKey;
    private readonly endpoint;
    private readonly cache;
    private readonly timeoutMs;
    constructor(modelName: string, apiKey: string, options?: {
        endpoint?: string;
        cache?: LruCache<string, number>;
        timeoutMs?: number;
    });
    countTokens(text: string): Promise<number>;
    free(): void;
}
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