import { OnModuleInit } from "@nestjs/common";
import { ConfigService } from "@nestjs/config";
import { BaseConfigInterface } from "../../../config/interfaces";
import { AppLoggingService } from "../../logging/services/logging.service";
import { RedisClientStorageService } from "../../redis/services/redis.client.storage.service";
/**
 * Distributed (Redis-backed) token bucket that rate-limits embedder calls across
 * every worker sharing this package's LLM layer. Only initialises when the
 * `ai.embedder.rateLimit` config block is present — without it the service is a
 * no-op (and ModelService.getEmbedder() returns the raw provider embedder).
 */
export declare class EmbedderTokenBucketService implements OnModuleInit {
    private readonly redisClientStorage;
    private readonly config;
    private readonly logger;
    private redis?;
    private bucketKey;
    private capacity;
    private refillPerMs;
    constructor(redisClientStorage: RedisClientStorageService, config: ConfigService<BaseConfigInterface>, logger: AppLoggingService);
    onModuleInit(): Promise<void>;
    consume(estTokens: number, maxWaitMs: number): Promise<{
        granted: boolean;
        waitMs: number;
        bucketAfter: number;
    }>;
    refund(estTokens: number): Promise<void>;
}
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