import { ConnectionOptions, DataChannelConfiguration, DataChannelEvent, DataChannelMessageEvent, JSONType, SignalingConnectMessage, SignalingEvent, SignalingNotifyConnectionCreated, SignalingNotifyConnectionDestroyed, SignalingNotifyMetadata, TimelineEvent, TimelineEventLogType, TransportType } from './types';
export declare function isSafari(): boolean;
export declare function isChrome(): boolean;
export declare function isFirefox(): boolean;
export declare function createSignalingMessage(offerSDP: string, role: string, channelId: string | null | undefined, metadata: JSONType | undefined, options: ConnectionOptions, redirect: boolean): SignalingConnectMessage;
export declare function getSignalingNotifyAuthnMetadata(message: SignalingNotifyConnectionCreated | SignalingNotifyConnectionDestroyed | SignalingNotifyMetadata): JSONType;
export declare function getSignalingNotifyData(message: SignalingNotifyConnectionCreated): SignalingNotifyMetadata[];
export declare function trace(clientId: string | null, title: string, value: unknown): void;
export declare class ConnectError extends Error {
    code?: number;
    reason?: string;
}
export declare function createSignalingEvent(eventType: string, data: unknown, transportType: TransportType): SignalingEvent;
export declare function createDataChannelData(channel: RTCDataChannel): Record<string, unknown>;
export declare function createTimelineEvent(eventType: string, data: unknown, logType: TimelineEventLogType, dataChannelId?: number | null, dataChannelLabel?: string): TimelineEvent;
export declare function createDataChannelMessageEvent(label: string, data: ArrayBuffer): DataChannelMessageEvent;
export declare function createDataChannelEvent(channel: DataChannelConfiguration): DataChannelEvent;
export declare function parseDataChannelEventData(eventData: unknown, compress: boolean): Promise<string>;
export declare const compressMessage: (binaryMessage: Uint8Array) => Promise<ArrayBuffer>;
export declare const decompressMessage: (binaryMessage: Uint8Array) => Promise<ArrayBuffer>;
export declare function addStereoToFmtp(sdp: string): string;