import { Document } from "@langchain/core/documents";
import { BaseDocumentLoader } from "../base.js";
import { type LoadersMapping, UnknownHandling } from "./directory.js";
/**
 * A document loader that loads documents from multiple files. It extends the
 * `BaseDocumentLoader` class and implements the `load()` method.
 * @example
 * ```typescript
 *
 * const multiFileLoader = new MultiFileLoader(
 *   ["path/to/file1.pdf", "path/to/file2.txt"],
 *   {
 *     ".pdf": (path: string) => new PDFLoader(path),
 *   },
 * );
 *
 * const docs = await multiFileLoader.load();
 * console.log({ docs });
 *
 * ```
 */
export declare class MultiFileLoader extends BaseDocumentLoader {
    filePaths: string[];
    loaders: LoadersMapping;
    unknown: UnknownHandling;
    constructor(filePaths: string[], loaders: LoadersMapping, unknown?: UnknownHandling);
    /**
     * Loads the documents from the provided file paths. It checks if the file
     * is a directory and ignores it. If a file is a file, it checks if there
     * is a corresponding loader function for the file extension in the `loaders`
     * mapping. If there is, it loads the documents. If there is no
     * corresponding loader function and `unknown` is set to `Warn`, it logs a
     * warning message. If `unknown` is set to `Error`, it throws an error.
     * @returns A promise that resolves to an array of loaded documents.
     */
    load(): Promise<Document[]>;
}