import { SourceConfigResolver as Resolver } from "./SourceConfigResolver.js";
import { SourceRecord } from "./types.js";
import { StorageRepository } from "./repository/StorageRepository.js";
import { SourceLoader } from "./SourceLoader";
import { LoggerProvider } from "./logger/LoggerProvider";
import { PrefixIndexDepth, PrefixIndexLine } from "./utils/typs.js";
export type { DiffEntry, DirectRelationMap, ThroughRelationMap } from "./types.js";
export type { IIndexReader } from "./IIndexReader.js";
/**
 * Indexer: facade class that composes PrefixTreeWalker and IndexBuilder.
 *
 * Maintains the same public API as before the split for backward compatibility.
 */
export declare class Indexer {
    static indexPrefix: string;
    static indexDepth: PrefixIndexDepth;
    private walker;
    private builder;
    constructor(sourceLoader: SourceLoader<SourceRecord>, repository: StorageRepository, resolver: Resolver, logger: LoggerProvider, customIndexers?: Record<string, (value: any, record?: SourceRecord) => any>);
    /** Returns the path to the prefixes index dir. */
    static getIndexDir(sourceName: string, field: string): string;
    /**
     * Saves indexes and slug lists for all sources.
     */
    save(): Promise<void>;
    /**
     * Incrementally updates affected indexes based on diff entries.
     */
    updateIndexesForFiles(diffEntries: import("./types.js").DiffEntry[]): Promise<string[]>;
    /**
     * Get PrefixIndexLines for next page.
     */
    readForwardPrefixIndexLines(rootDir: string, pageSize?: number, cursor?: string, orderByKey?: string, isDesc?: boolean): AsyncGenerator<PrefixIndexLine, void, unknown>;
    /**
     * Get PrefixIndexLines for backward pagination.
     */
    readBackwardPrefixIndexLines(rootDir: string, pageSize?: number, cursor?: string, orderByKey?: string, isDesc?: boolean): AsyncGenerator<PrefixIndexLine, void, unknown>;
    /**
     * Read index file lines.
     */
    readIndexFileLines(indexPath: string, reverse: boolean): AsyncGenerator<PrefixIndexLine>;
    /**
     * Find PrefixIndexLine list with stream.
     */
    findIndexLines(sourceName: string, field: string, value: string, filterCallback?: (indexValue: string, argValue: string) => boolean): Promise<null | PrefixIndexLine[]>;
    /**
     * Flatten PrefixIndexLine array by ref keys.
     */
    flatPrefixIndexLine(unflattened: PrefixIndexLine[]): PrefixIndexLine[];
    /**
     * Get Prefix Index directories path converted with Unicode.
     */
    getPrefixIndexPath(value: string, depth: number): string;
}