/// <reference types="node" />
import { KnownBlock, MessageAttachment, View } from '@slack/types';
import { Browser, ConnectOptions, LaunchOptions, Page, ScreenshotOptions } from 'puppeteer';
export declare type Screenshot = string | Buffer;
export interface BlockKitRendererOptions {
    puppeteer?: LaunchOptions;
}
export default class BlockKitRenderer {
    browser?: Browser;
    page?: Page;
    private readonly puppeteerOptions;
    constructor(options?: BlockKitRendererOptions);
    login(domain: string, email: string, password: string): Promise<void>;
    private getBuilderPage;
    /**
     * enables connecting to existing browser
     */
    connect(options: ConnectOptions): Promise<void>;
    /**
     * Emulates a Ctrl+A SelectAll key combination by dispatching custom keyboard
     * events and using the results of those events to determine whether to call
     * `document.execCommand( 'selectall' );`. This is necessary because Puppeteer
     * does not emulate Ctrl+A SelectAll in macOS. Events are dispatched to ensure
     * that any `Event#preventDefault` which would have normally occurred in the
     * application as a result of Ctrl+A is respected.
     *
     * @link https://github.com/GoogleChrome/puppeteer/issues/1313
     * @link https://w3c.github.io/uievents/tools/key-event-viewer.html
     * @link https://github.com/puppeteer/puppeteer/issues/1313#issuecomment-480052880
     */
    private emulateSelectAll;
    private enterCode;
    private selectMode;
    private imageFromPayload;
    imageFromBlocks(blocks: KnownBlock[], options?: ScreenshotOptions): Promise<Screenshot>;
    imageFromView(view: View, options?: ScreenshotOptions): Promise<Screenshot>;
    imageFromAttachments(attachments: MessageAttachment[], options?: ScreenshotOptions): Promise<Screenshot>;
    close(): Promise<void>;
}