import { InteractionBuilderFn } from "../interaction/interaction";
/**
 * A builder function that creates a ping interaction to test connectivity to the Flow Access Node.
 *
 * The ping interaction is a simple way to test if the Flow Access Node is reachable and responding. This is useful for health checks, connectivity testing, and debugging network issues.
 *
 * @returns A function that processes an interaction object
 *
 * @example
 * import * as fcl from "@onflow/fcl";
 *
 * // Simple ping to test connectivity
 * try {
 *   const response = await fcl.send([fcl.ping()]);
 *   console.log("Access Node is reachable");
 * } catch (error) {
 *   console.error("Access Node is not reachable:", error);
 * }
 *
 * // Use ping for health checks
 * const healthCheck = async () => {
 *   try {
 *     await fcl.send([fcl.ping()]);
 *     return { status: "healthy", timestamp: new Date().toISOString() };
 *   } catch (error) {
 *     return { status: "unhealthy", error: error.message, timestamp: new Date().toISOString() };
 *   }
 * };
 *
 * const health = await healthCheck();
 * console.log("Health status:", health);
 */
export declare function ping(): InteractionBuilderFn;