import type { IUpsertAgent } from './sqlite-store.js';
export interface ISyncBatch {
    agents: IUpsertAgent[];
    cursor?: string;
    hasMore: boolean;
    total?: number;
}
export interface IDataSource {
    readonly sourceId: string;
    readonly chainPrefix: string;
    isAvailable(): Promise<boolean>;
    fetchBatch(options: {
        cursor?: string;
        updatedSince?: number;
        limit?: number;
    }): Promise<ISyncBatch>;
    getTotalCount(): Promise<number>;
}
export declare abstract class BaseDataSource implements IDataSource {
    abstract readonly sourceId: string;
    abstract readonly chainPrefix: string;
    abstract isAvailable(): Promise<boolean>;
    abstract fetchBatch(options: {
        cursor?: string;
        updatedSince?: number;
        limit?: number;
    }): Promise<ISyncBatch>;
    abstract getTotalCount(): Promise<number>;
    protected defaultBatchSize: number;
}
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