import { Package } from "./Package";
import { MultiSendFunction } from "./Utils";
export interface PackageBufferOptions {
    maxBufferSize: number;
    maxBufferChunkLength: number;
    limitBatchStringLength: number;
    limitBatchBinarySize: number;
    stringSizeDeterminer: (str: string) => number;
}
export default class PackageBuffer {
    send: MultiSendFunction;
    isOpen: () => boolean;
    options: PackageBufferOptions;
    constructor(send: MultiSendFunction, isOpen?: () => boolean, options?: PackageBufferOptions);
    private _buffer;
    private _bufferSize;
    private _bufferTimeoutDelay;
    private _bufferTimeoutTicker;
    private _bufferTimeoutTimestamp;
    static readonly DEFAULT_OPTIONS: Readonly<PackageBufferOptions>;
    static buildOptions(options: Partial<PackageBufferOptions>): PackageBufferOptions;
    getBufferLength(): number;
    getBufferSize(): number;
    clearBuffer(): void;
    private _onBatchTimeout;
    private _addPackageSize;
    add(pack: Package, batch?: number | true): void;
    tryRemove(pack: Package): boolean;
    private _pushToBuffer;
    private _setBatchTime;
    private _clearBufferTimeout;
    private _setBufferTimeout;
    clearBatchTime(): void;
    flushBuffer(): boolean;
    private _flushBuffer;
    private _internalFlushBuffer;
    private _sendBufferChunk;
    private _batchCompress;
    private _createBinaryContentBatches;
    private static _createBinaryContentBatch;
}