import { FastUploadTaskOptions } from './types';
export declare type ConcurrencyDecision = {
    fileInfoConcurrency: number;
    uploadConcurrency: number;
};
declare type ThroughputSample = {
    processedFiles: number;
    elapsedMs: number;
    failedFiles: number;
};
export declare class AdaptiveConcurrency {
    private readonly options;
    private lastDecision;
    constructor(options: FastUploadTaskOptions);
    decideByWorkload(totalFiles: number, totalBytes: number): ConcurrencyDecision;
    adjustByRuntime(sample: ThroughputSample): ConcurrencyDecision;
    getLastDecision(): ConcurrencyDecision | null;
}
export {};