export interface IPerMessageDeflateOptions {
    /** Whether to use context takeover or not. */
    serverNoContextTakeover?: boolean | undefined;
    /** Acknowledge disabling of client context takeover. */
    clientNoContextTakeover?: boolean | undefined;
    /** Must be [8, 15]. Defaults to 15. */
    serverMaxWindowBits?: number | undefined;
    /** @deprecated Must be undefined because of OkHttp and `java.util.zip.Deflater` limitation. Practically defaults to 15. */
    clientMaxWindowBits?: number | undefined;
    /** Payloads smaller than this will not be compressed if context takeover is disabled. Defaults to 1024 bytes. */
    threshold?: number | undefined;
    /** The number of concurrent calls to zlib. Calls above this limit will be queued. Defaults to 10. See also https://github.com/websockets/ws/issues/1202. */
    concurrencyLimit?: number | undefined;
}