export interface GoogleDocsPushHeaders {
    channelId?: string | null;
    channelToken?: string | null;
    resourceId?: string | null;
}
export declare function createGoogleDocsChannelAuth(): {
    token: string;
    tokenHash: string;
};
export declare function hashGoogleDocsChannelToken(token: string): string;
export declare function verifyGoogleDocsChannel(expected: Record<string, unknown> | null | undefined, received: GoogleDocsPushHeaders): boolean;