/** @public */
export declare const gcpIapAuthenticator: import("@backstage/plugin-auth-node").ProxyAuthenticator<{
    jwtHeader: string;
    tokenValidator: (token: string) => Promise<import("./types").GcpIapTokenInfo>;
}, {
    iapToken: import("./types").GcpIapTokenInfo;
}, {
    iapToken: import("./types").GcpIapTokenInfo;
}>;