/// <reference types="node" />
/// <reference types="node" />
import { Overrides } from '../config.js';
import { Attachment, FindAttachmentQueryParams, DownloadAttachmentQueryParams } from '../models/attachments.js';
import { NylasResponse } from '../models/response.js';
import { Resource } from './resource.js';
/**
 * @property identifier The ID of the grant to act upon. Use "me" to refer to the grant associated with an access token.
 * @property attachmentId The ID of the attachment to act upon.
 * @property queryParams The query parameters to include in the request
 */
interface FindAttachmentParams {
    identifier: string;
    attachmentId: string;
    queryParams: FindAttachmentQueryParams;
}
/**
 * @property identifier The ID of the grant to act upon. Use "me" to refer to the grant associated with an access token.
 * @property attachmentId The ID of the attachment to act upon.
 * @property queryParams The query parameters to include in the request
 */
interface DownloadAttachmentParams {
    identifier: string;
    attachmentId: string;
    queryParams: DownloadAttachmentQueryParams;
}
/**
 * Nylas Attachments API
 *
 * The Nylas Attachments API allows you to retrieve metadata and download attachments.
 */
export declare class Attachments extends Resource {
    /**
     * Returns an attachment by ID.
     * @return The Attachment metadata
     */
    find({ identifier, attachmentId, queryParams, overrides, }: FindAttachmentParams & Overrides): Promise<NylasResponse<Attachment>>;
    /**
     * Download the attachment data
     *
     * This method returns a NodeJS.ReadableStream which can be used to stream the attachment data.
     * This is particularly useful for handling large attachments efficiently, as it avoids loading
     * the entire file into memory. The stream can be piped to a file stream or used in any other way
     * that Node.js streams are typically used.
     *
     * @param identifier Grant ID or email account to query
     * @param attachmentId The id of the attachment to download.
     * @param queryParams The query parameters to include in the request
     * @returns {NodeJS.ReadableStream} The ReadableStream containing the file data.
     */
    download({ identifier, attachmentId, queryParams, overrides, }: DownloadAttachmentParams & Overrides): Promise<NodeJS.ReadableStream>;
    /**
     * Download the attachment as a byte array
     * @param identifier Grant ID or email account to query
     * @param attachmentId The id of the attachment to download.
     * @param queryParams The query parameters to include in the request
     * @return The raw file data
     */
    downloadBytes({ identifier, attachmentId, queryParams, overrides, }: DownloadAttachmentParams & Overrides): Promise<Buffer>;
}
export {};