/**
 * SSH fallback for reaching a box that has no SSM agent (Lightsail).
 *
 * Node-only: spawns `ssh` and writes a temporary key file. Not importable from a
 * Next.js edge runtime, which is why it lives behind
 * `@indigoai-us/hq-cloud/outposts/node` rather than the portable entry point.
 */
import type { OutpostSshAccess } from "./types.js";
/** Outcome of a one-shot SSH invocation. */
export interface SshExecResult {
    stdout: string;
    stderr: string;
    /**
     * The remote process exit code, or `null` when `ssh` itself could not run
     * (e.g. the binary is missing) — in which case `error` explains why.
     */
    exitCode: number | null;
    error?: string;
}
/**
 * Run `command` on the box over SSH using vended access details.
 *
 * Writes the private key to a locked-down temp file, runs a non-interactive
 * `ssh`, and returns the streams. The key file and a throwaway `known_hosts` are
 * always cleaned up, and the key is never printed — it is a credential vended for
 * this one call.
 */
export declare function execViaSsh(access: OutpostSshAccess, command: string): SshExecResult;
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