/**
 * Single-attempt MongoDB connectivity check for Activix (no retries).
 */
export type ActivixMongoConnectionResult = {
    ok: true;
} | {
    ok: false;
    reason: string;
};
export interface TestActivixMongoConnectionOptions {
    /** When omitted, uses `resolveActivixMongoUriFromEnv()`. */
    mongoUri?: string;
    /** Database used for `ping` (defaults via `resolveActivixLogsDatabaseName()` when omitted). */
    mongoDb?: string;
    /**
     * How long to wait for server selection on this one connect attempt (ms).
     * @default 5000
     */
    serverSelectionTimeoutMS?: number;
}
/**
 * Reads common Activix / logging Mongo URI env vars (no config files).
 */
export declare function resolveActivixMongoUriFromEnv(): string | undefined;
/**
 * Opens one MongoClient connection, runs `ping` on the target database, then closes.
 * Does not retry; driver-level retries are minimized via short timeouts.
 */
export declare function testActivixMongoConnection(options?: TestActivixMongoConnectionOptions): Promise<ActivixMongoConnectionResult>;
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