/// <reference types="node" />
/// <reference types="node" />
import { Node } from '@web/parse5-utils';
import chokidar from 'chokidar';
import { EventEmitter } from 'events';
import { Flags } from './bundle.mjs';
import { Plugin } from './plugin.mjs';
export declare function loadBundleConfig(flags: Flags): Promise<{
    src: string;
    build: string;
    assets: string;
    copy: (string | Record<string, string>)[];
    browsers: string;
    server: {
        url: URL;
        port: number;
        https?: {
            cert?: string | undefined;
            key?: string | undefined;
        } | undefined;
    };
    esbuild: import("esbuild").BuildOptions & {
        define: Record<string, string>;
    };
    lightningCss: any;
    htmlMinifierTerser: import("html-minifier-terser").Options;
    isCritical: boolean;
    deletePrev: boolean;
    plugins: import("./plugin.mjs").PluginInstance[];
    events: EventEmitter;
    virtualFiles: Record<string, Plugin.VirtualFile>;
    getBuildPath: (file: string) => string;
    resolve: (id: string, importer?: string | URL | undefined) => URL;
    resolveDevUrl: (id: string, importer?: string | URL | undefined) => URL;
    webext?: import("../config.mjs").WebExtension.Config | undefined;
    watcher?: chokidar.FSWatcher | undefined;
}>;
export declare function createDir(file: string): Promise<string | undefined>;
export declare function toArray<T>(value: T | T[]): T[];
export declare function resolveHome(file: string): string;
export declare function resolveHome(file: string | undefined): string | undefined;
export declare function baseRelative(file: string): string;
export declare function relative(from: string, to: string): string;
export declare function findExternalScripts(rootNode: Node): import("parse5").Element[];
export declare function findFreeTcpPort(): Promise<number>;
export declare function lowercaseKeys<T extends object>(obj: T): T;