/**
 * FirebaseDataLogger.ts — Firebase/Firestore implementation stub.
 *
 * MIGRATION GUIDE (when ready to move from CSV → Firebase):
 *
 * 1. Install the Firebase Admin SDK:
 *      npm install firebase-admin --save
 *
 * 2. Set up a service account key at ~/.careervivid/firebase-service-account.json
 *    OR use GOOGLE_APPLICATION_CREDENTIALS env var.
 *
 * 3. Create a Firestore collection named "agent_eval_results" in your project.
 *
 * 4. Uncomment the implementation below and remove the NotImplementedError.
 *
 * 5. In cli/src/eval/index.ts (or eval.ts command), change:
 *      const logger = new CsvDataLogger(csvOpts);
 *    to:
 *      const logger = new FirebaseDataLogger({ projectId: "jastalk-firebase" });
 *
 * That's it. No other files need to change.
 */
import type { IDataLogger } from "./IDataLogger.js";
import type { EvalResult, RunSummary } from "../types.js";
export interface FirebaseDataLoggerOptions {
    /** GCP project ID (e.g. "jastalk-firebase") */
    projectId: string;
    /** Firestore collection name. Default: "agent_eval_results" */
    collection?: string;
    /** Path to service account JSON. Falls back to ADC if omitted. */
    serviceAccountPath?: string;
}
/**
 * Placeholder FirebaseDataLogger that satisfies IDataLogger but throws
 * NotImplementedError on any call. Replace with the real implementation
 * when migrating from CSV storage.
 */
export declare class FirebaseDataLogger implements IDataLogger {
    private readonly projectId;
    private readonly collection;
    constructor(options: FirebaseDataLoggerOptions);
    log(_result: EvalResult): Promise<void>;
    flush(): Promise<void>;
    close(): Promise<void>;
    logSummary(_summary: RunSummary): Promise<void>;
    private throwNotImplemented;
}
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