import * as puppeteerBrowser from '@puppeteer/browsers';
import { Browser } from '@puppeteer/browsers';
import { PdfParameters } from './pdf-parameters.interface';
export declare enum BrowserTag {
    LATEST = "latest",
    BETA = "beta",
    DEV = "dev",
    STABLE = "stable",
    CANARY = "canary"
}
export declare class BrowserService {
    private cacheDir;
    private options?;
    private browser;
    private browserTag;
    private useLockedBrowser;
    private buildId;
    constructor(pdfParams: PdfParameters);
    install(lock?: boolean): Promise<puppeteerBrowser.InstalledBrowser>;
    private loadBrowser;
    setBrowser(browser: Browser): void;
    getBrowser(): Browser;
    private loadBrowserTag;
    private loadBuildId;
    setBrowserTag(browserTag: BrowserTag): void;
    getBrowserTag(): BrowserTag;
    getBuildId(): string | undefined;
    setBuildId(value: string | undefined): void;
    private loadUseLockedBrowser;
    hasBrowserInstalled(browser: any, buildId: any): Promise<boolean>;
    getExecutablePath(): Promise<string>;
    private writeLockFile;
    getLockedBuildId(browser: Browser): string | null;
}