#!/usr/bin/env node
/**
 * MailDev container healthcheck
 *
 * Standalone entrypoint used by the Docker HEALTHCHECK. It reads the same
 * MAILDEV_* environment variables the server uses and probes the endpoint that
 * is actually listening:
 *
 *   - Web UI enabled  -> HTTP(S) GET http(s)://127.0.0.1:<web><basePath>/api/healthz
 *   - Web UI disabled -> TCP connect to 127.0.0.1:<smtp>
 *
 * Design notes (each addresses a reported bug):
 *   - Always targets `127.0.0.1`, never `localhost`, so it can't fail when
 *     `localhost` resolves to IPv6 (`::1`) but the server binds IPv4 only. (#537)
 *   - Falls back to the SMTP port when the web UI is disabled, so
 *     `--disable-web` containers still report healthy. (#544)
 *   - Normalizes the base path so a trailing slash can't produce a `//` in the
 *     probe URL. (#542)
 *   - Probes over HTTPS (ignoring the self-signed cert) when MAILDEV_HTTPS is
 *     set, so TLS-enabled containers don't report unhealthy. The env var is the
 *     same one that turns HTTPS on, so the probe always matches the server.
 */
export interface HealthcheckPlan {
    mode: 'web' | 'smtp';
    host: string;
    port: number;
    /** Request path for `web` mode. */
    path?: string;
    /** Use HTTPS (ignoring cert validation) for `web` mode. */
    secure?: boolean;
}
/** Normalize a base pathname to `''` or `/foo` (leading slash, no trailing slash). */
export declare function normalizeBasePath(raw: string | undefined): string;
/**
 * Decide what to probe based on the MailDev environment configuration.
 */
export declare function resolveHealthcheck(env: NodeJS.ProcessEnv): HealthcheckPlan;
/**
 * Run the healthcheck against the given environment. Resolves `true` when the
 * relevant MailDev service is reachable.
 */
export declare function runHealthcheck(env?: NodeJS.ProcessEnv): Promise<boolean>;
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