export declare const NSStreamPropertyKey: {
    readonly NSStreamSocketSecurityLevelKey: "kCFStreamPropertySocketSecurityLevel";
    readonly NSStreamSOCKSProxyConfigurationKey: "kCFStreamPropertySOCKSProxy";
    readonly NSStreamDataWrittenToMemoryStreamKey: "kCFStreamPropertyDataWritten";
    readonly NSStreamFileCurrentOffsetKey: "kCFStreamPropertyFileCurrentOffset";
    readonly NSStreamNetworkServiceType: "kCFStreamNetworkServiceType";
};
export type NSStreamPropertyKey = typeof NSStreamPropertyKey[keyof typeof NSStreamPropertyKey];
