export interface BufferedLogItem<T> {
    value: T;
    bytes: number;
    high_priority: boolean;
}
export interface BoundedLogBufferOptions<T> {
    max_bytes: number;
    max_records: number;
    high_severity_reserve_bytes: number;
    flush_interval_ms: number;
    minimum_high_priority_drain_interval_ms?: number;
    drain(items: readonly BufferedLogItem<T>[]): Promise<void>;
    on_drop?(reason: "normal_capacity" | "total_capacity" | "closed", item: T): void;
    on_drain_error?(error: unknown): void;
}
export declare class BoundedLogBuffer<T> {
    #private;
    constructor(options: BoundedLogBufferOptions<T>);
    get size(): {
        records: number;
        bytes: number;
        capacity_bytes: number;
    };
    enqueue(item: BufferedLogItem<T>): boolean;
    flush(): Promise<void>;
    close(): Promise<void>;
}
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