import type { BulkFileDownloadBudgetApi } from '../Api/BulkFileDataCacheApi';
export interface FixedWindowBulkFileDownloadBudgetOptions {
    maxBytes: number;
    windowMsecs?: number;
    now?: () => number;
}
/**
 * Conservative process-local byte reservation budget for remote bulk-header
 * downloads. A reservation is retained even when the subsequent request
 * fails, preventing a failing upstream from bypassing the bound.
 *
 * @public
 */
export declare class FixedWindowBulkFileDownloadBudget implements BulkFileDownloadBudgetApi {
    private readonly maxBytes;
    private readonly windowMsecs;
    private readonly now;
    private windowStartedAt;
    private consumedBytes;
    constructor(options: FixedWindowBulkFileDownloadBudgetOptions);
    consume(byteCount: number): void;
    snapshot(): {
        maxBytes: number;
        consumedBytes: number;
        remainingBytes: number;
        windowStartedAt: number;
        windowMsecs: number;
    };
}
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