import { PANERELAY_PROTOCOL_VERSION } from './constants.js';
export declare const PANERELAY_NATIVE_CHUNK_BYTES: number;
export declare const PANERELAY_NATIVE_TRANSFER_TIMEOUT_MS = 15000;
export declare const PANERELAY_NATIVE_TRANSFER_MAX_BYTES: number;
export declare const PANERELAY_NATIVE_TRANSFER_MAX_CHUNKS = 1024;
export interface NativeTransferChunk {
    type: 'transport.chunk';
    protocol: typeof PANERELAY_PROTOCOL_VERSION;
    transferId: string;
    index: number;
    total: number;
    totalBytes: number;
    checksum: string;
    data: string;
}
export interface NativeTransferCancel {
    type: 'transport.cancel';
    protocol: typeof PANERELAY_PROTOCOL_VERSION;
    transferId: string;
    reason: string;
}
export type NativeTransferEnvelope = NativeTransferChunk | NativeTransferCancel;
export interface NativeTransferEncoderOptions {
    chunkBytes?: number;
    inlineBytes?: number;
    transferId?: string;
}
export interface NativeTransferReceiverOptions {
    maxChunkBytes?: number;
    maxTransferBytes?: number;
    timeoutMs?: number;
}
export declare function isNativeTransferEnvelope(value: unknown): value is NativeTransferEnvelope;
export declare function createNativeTransferCancel(transferId: string, reason: string): NativeTransferCancel;
export declare function encodeNativeTransfer(message: unknown, options?: NativeTransferEncoderOptions): Array<unknown | NativeTransferChunk>;
export declare class NativeTransferReceiver {
    private readonly pending;
    private readonly maxChunkBytes;
    private readonly maxTransferBytes;
    private readonly timeoutMs;
    constructor(options?: NativeTransferReceiverOptions);
    get pendingCount(): number;
    push(message: unknown, now?: number): unknown[];
    expire(now?: number): string[];
    cancelAll(): void;
}
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