index.ts

/**
 * @license
 * Copyright 2025 Google LLC
 * SPDX-License-Identifier: Apache-2.0
 */

import 'urlpattern-polyfill';
import 'core-js/modules/es.promise.with-resolvers.js';
import 'core-js/modules/es.set.union.v2.js';
import 'core-js/proposals/iterator-helpers.js';

import type {Flags, OutputMode, Result, RunnerResult} from 'lighthouse';
import type {Page} from 'puppeteer-core';

export type {Flags, Result, RunnerResult, OutputMode};

export type {Options as YargsOptions} from 'yargs';
export {default as yargs} from 'yargs';
export {hideBin} from 'yargs/helpers';
export {default as semver} from 'semver';
export {default as debug} from 'debug';
export type {Debugger} from 'debug';
export {McpServer} from '@modelcontextprotocol/sdk/server/mcp.js';
export {type ShapeOutput} from '@modelcontextprotocol/sdk/server/zod-compat.js';
export {StdioServerTransport} from '@modelcontextprotocol/sdk/server/stdio.js';
export {StdioClientTransport} from '@modelcontextprotocol/sdk/client/stdio.js';
export {Client} from '@modelcontextprotocol/sdk/client/index.js';
export {
  type CallToolResult,
  SetLevelRequestSchema,
  type ImageContent,
  type TextContent,
} from '@modelcontextprotocol/sdk/types.js';
export {z as zod} from 'zod';
export {default as ajv} from 'ajv';
export {
  Locator,
  PredefinedNetworkConditions,
  KnownDevices,
  CDPSessionEvent,
} from 'puppeteer-core';
export {default as puppeteer} from 'puppeteer-core';
export type * from 'puppeteer-core';
export {PipeTransport} from 'puppeteer-core/internal/node/PipeTransport.js';
export type {CdpPage} from 'puppeteer-core/internal/cdp/Page.js';
export type {JSONSchema7, JSONSchema7Definition} from 'json-schema';
export {
  resolveDefaultUserDataDir,
  detectBrowserPlatform,
  Browser as BrowserEnum,
  type ChromeReleaseChannel as BrowsersChromeReleaseChannel,
} from '@puppeteer/browsers';

import {
  snapshot as snapshotImpl,
  navigation as navigationImpl,
  generateReport as generateReportImpl,
} from './lighthouse-devtools-mcp-bundle.js';

// Some vendored DevTools/Lighthouse code paths call window.atob/window.btoa even
// when running under Node.js. Expose a browser-like alias so those runtime calls
// resolve to Node's global atob/btoa instead of throwing ReferenceError.
if (typeof globalThis.window === 'undefined') {
  globalThis.window = globalThis as typeof globalThis & Window & typeof globalThis;
}


export const snapshot = snapshotImpl as (
  page: Page,
  options: {flags?: Flags},
) => Promise<RunnerResult>;
export const navigation = navigationImpl as (
  page: Page,
  url: string,
  options: {flags?: Flags},
) => Promise<RunnerResult>;
export const generateReport = generateReportImpl as (
  lhr: Result,
  format: string,
) => string;

export * as DevTools from '../../node_modules/chrome-devtools-frontend/mcp/mcp.js';