import { LogEntry, LogLevel, LogMiddleware, MiddlewareContext } from '../types';
export interface RateLimitOptions {
    maxLogsPerSecond?: number;
    maxLogsPerMinute?: number;
    maxLogsPerHour?: number;
    skipLevels?: LogLevel[];
    onRateLimitExceeded?: (droppedCount: number) => void;
}
export declare class RateLimitMiddleware implements LogMiddleware {
    private options;
    readonly name = "RateLimitMiddleware";
    private logTimestamps;
    private droppedLogsCount;
    constructor(options?: RateLimitOptions);
    execute(entry: LogEntry, context: MiddlewareContext, next: () => Promise<void> | void): Promise<void>;
    private cleanOldTimestamps;
    private isRateLimitExceeded;
    private getLogsInWindow;
    getDroppedLogsCount(): number;
    resetDroppedLogsCount(): void;
}