import { SmrtClassOptions } from '@happyvertical/smrt-core';
import { CampaignMetricSnapshotCollection } from '../collections/CampaignMetricSnapshotCollection.js';
import { CampaignMetricSnapshot } from '../models/CampaignMetricSnapshot.js';
import { CampaignMetricSnapshotOptions } from '../types.js';
/** Idempotent, validation-first ingestion for immutable metric evidence. */
export declare class MetricIngestionService {
    private readonly snapshots;
    constructor(snapshots: CampaignMetricSnapshotCollection);
    static create(classOptions?: SmrtClassOptions): Promise<MetricIngestionService>;
    ingest(options: CampaignMetricSnapshotOptions): Promise<{
        snapshot: CampaignMetricSnapshot;
        created: boolean;
    }>;
}
export default MetricIngestionService;
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