import { SmrtCollection } from '@happyvertical/smrt-core';
import { OpportunityConversion } from '../models/OpportunityConversion.js';
import { RecordConversionParams, RecordConversionResult } from '../types.js';
export declare class OpportunityConversionCollection extends SmrtCollection<OpportunityConversion> {
    static readonly _itemClass: typeof OpportunityConversion;
    private opportunityCollectionPromise;
    /** Sibling opportunity collection sharing this collection's DB connection. */
    private getOpportunityCollection;
    /** All conversion links recorded for one opportunity, oldest first. */
    findByOpportunity(opportunityId: string): Promise<OpportunityConversion[]>;
    /**
     * Record that a WON opportunity materialized into a downstream record,
     * idempotently on the natural key `(opportunityId, targetKind, targetId)`.
     *
     * Preconditions: the opportunity must exist and its status must be `'won'`
     * — conversions from open or lost deals are rejected with a clear error.
     * CRM only records the link; creating the downstream record itself
     * (client, project, contract, subscription, …) is the caller's job.
     *
     * @returns `{ conversion, created }` — `created: false` when the link
     *   already existed (the existing row is returned untouched)
     */
    recordConversion(params: RecordConversionParams): Promise<RecordConversionResult>;
}
export default OpportunityConversionCollection;
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