import { ApplicationRef } from '@angular/core';
import { StaticProvider } from '@angular/core';
import { Type } from '@angular/core';

/**
 * A common engine to use to server render an application.
 */
export declare class CommonEngine {
    private options?;
    private readonly templateCache;
    private readonly inlineCriticalCssProcessor;
    private readonly pageIsSSG;
    constructor(options?: CommonEngineOptions | undefined);
    /**
     * Render an HTML document for a specific URL with specified
     * render options
     */
    render(opts: CommonEngineRenderOptions): Promise<string>;
    private inlineCriticalCss;
    private retrieveSSGPage;
    private renderApplication;
    /** Retrieve the document from the cache or the filesystem */
    private getDocument;
}

export declare interface CommonEngineOptions {
    /** A method that when invoked returns a promise that returns an `ApplicationRef` instance once resolved or an NgModule. */
    bootstrap?: Type<{}> | (() => Promise<ApplicationRef>);
    /** A set of platform level providers for all requests. */
    providers?: StaticProvider[];
    /** Enable request performance profiling data collection and printing the results in the server console. */
    enablePerformanceProfiler?: boolean;
}

export declare interface CommonEngineRenderOptions {
    /** A method that when invoked returns a promise that returns an `ApplicationRef` instance once resolved or an NgModule. */
    bootstrap?: Type<{}> | (() => Promise<ApplicationRef>);
    /** A set of platform level providers for the current request. */
    providers?: StaticProvider[];
    url?: string;
    document?: string;
    documentFilePath?: string;
    /**
     * Reduce render blocking requests by inlining critical CSS.
     * Defaults to true.
     */
    inlineCriticalCss?: boolean;
    /**
     * Base path location of index file.
     * Defaults to the 'documentFilePath' dirname when not provided.
     */
    publicPath?: string;
}

export { }