/**
 * Aggregates `getStats()` snapshots from one or more named sources (typically
 * a `Transport`, `Channel`, or `NetworkPeer.channel_for(peer)`) and reports
 * recent throughput rates.
 *
 * Per-source stats are queried via the source's `getStats()` method. A "sample"
 * captures the current totals at a wall-clock moment; the meter retains a
 * sliding window of samples and computes bytes-per-second / packets-per-second
 * over the window.
 *
 * No timer of its own — caller invokes {@link sample} per tick (or whenever).
 *
 * @author Alex Goldring
 * @copyright Company Named Limited (c) 2026
 */
export class BandwidthMeter {
    /**
     * @param {{ window_seconds?: number }} [options]
     */
    constructor({ window_seconds }?: {
        window_seconds?: number;
    });
    /** @readonly */
    readonly window_seconds: number;
    /**
     * @param {string} name human-readable label
     * @param {{ getStats(): {bytes_in: number, bytes_out: number, packets_in: number, packets_out: number} }} source
     */
    add_source(name: string, source: {
        getStats(): {
            bytes_in: number;
            bytes_out: number;
            packets_in: number;
            packets_out: number;
        };
    }): void;
    /**
     * Capture a fresh sample at the given wall-clock time (caller-supplied so
     * tests can use a deterministic clock; in production typically `Date.now()`).
     *
     * @param {number} now_ms
     */
    sample(now_ms: number): void;
    /**
     * Cumulative totals across all sources, right now (re-queries getStats()).
     * Independent of the sample window.
     */
    cumulative(): {
        bytes_in: number;
        bytes_out: number;
        packets_in: number;
        packets_out: number;
    };
    /**
     * Bytes-per-second received, averaged over the sample window.
     * Returns 0 if fewer than 2 samples have been taken.
     */
    rate_bytes_in(): number;
    rate_bytes_out(): number;
    rate_packets_in(): number;
    rate_packets_out(): number;
    /**
     * Per-source breakdown of cumulative totals (re-queries getStats()).
     * @returns {Array<{name: string, totals: object}>}
     */
    per_source(): Array<{
        name: string;
        totals: object;
    }>;
    /**
     * Drop all retained samples. Source registrations are preserved.
     */
    reset_samples(): void;
    #private;
}
//# sourceMappingURL=BandwidthMeter.d.ts.map