/**
* Copyright (c) Microsoft Corporation.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
import { StdioServerTransport } from '@modelcontextprotocol/sdk/server/stdio.js';
import * as mcpServer from '../mcp/server.js';
import { BrowserServerBackend } from '../browserServerBackend.js';
import { BrowserContextFactory, ClientInfo } from '../browserContextFactory.js';
import type { FullConfig } from '../config.js';
import type { BrowserContext } from 'playwright-core';
class VSCodeBrowserContextFactory implements BrowserContextFactory {
name = 'vscode';
description = 'Connect to a browser running in the Playwright VS Code extension';
constructor(private _config: FullConfig, private _playwright: typeof import('playwright'), private _connectionString: string) {}
async createContext(clientInfo: ClientInfo, abortSignal: AbortSignal): Promise<{ browserContext: BrowserContext; close: () => Promise<void>; }> {
let launchOptions: any = this._config.browser.launchOptions;
if (this._config.browser.userDataDir) {
launchOptions = {
...launchOptions,
...this._config.browser.contextOptions,
userDataDir: this._config.browser.userDataDir,
};
}
const connectionString = new URL(this._connectionString);
connectionString.searchParams.set('launch-options', JSON.stringify(launchOptions));
const browserType = this._playwright.chromium; // it could also be firefox or webkit, we just need some browser type to call `connect` on
const browser = await browserType.connect(connectionString.toString());
const context = browser.contexts()[0] ?? await browser.newContext(this._config.browser.contextOptions);
return {
browserContext: context,
close: async () => {
await browser.close();
}
};
}
}
async function main(config: FullConfig, connectionString: string, lib: string) {
const playwright = await import(lib).then(mod => mod.default ?? mod);
const factory = new VSCodeBrowserContextFactory(config, playwright, connectionString);
await mcpServer.connect(
{
name: 'Playwright MCP',
nameInConfig: 'playwright-vscode',
create: () => new BrowserServerBackend(config, factory),
version: 'unused'
},
new StdioServerTransport(),
false
);
}
await main(
JSON.parse(process.argv[2]),
process.argv[3],
process.argv[4]
);