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fix(config): allow specifying user data dir in config (#342)

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Fixes https://github.com/microsoft/playwright-mcp/issues/340
This commit is contained in:
Pavel Feldman
2025-05-05 08:23:24 -07:00
committed by GitHub
parent 7dc689eee7
commit 4694d60fc5
3 changed files with 65 additions and 19 deletions
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25
src/context.ts
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@@ -14,6 +14,10 @@
* limitations under the License.
*/
import fs from 'node:fs';
import os from 'node:os';
import path from 'node:path';
import * as playwright from 'playwright';
import { waitForCompletion } from './tools/utils.js';
@@ -333,8 +337,10 @@ ${code.join('\n')}
async function launchPersistentContext(browserConfig: Config['browser']): Promise<playwright.BrowserContext> {
try {
const browserType = browserConfig?.browserName ? playwright[browserConfig.browserName] : playwright.chromium;
return await browserType.launchPersistentContext(browserConfig?.userDataDir || '', { ...browserConfig?.launchOptions, ...browserConfig?.contextOptions });
const browserName = browserConfig?.browserName ?? 'chromium';
const userDataDir = browserConfig?.userDataDir ?? await createUserDataDir({ ...browserConfig, browserName });
const browserType = playwright[browserName];
return await browserType.launchPersistentContext(userDataDir, { ...browserConfig?.launchOptions, ...browserConfig?.contextOptions });
} catch (error: any) {
if (error.message.includes('Executable doesn\'t exist'))
throw new Error(`Browser specified in your config is not installed. Either install it (likely) or change the config.`);
@@ -342,6 +348,21 @@ async function launchPersistentContext(browserConfig: Config['browser']): Promis
}
}
async function createUserDataDir(browserConfig: Config['browser']) {
let cacheDirectory: string;
if (process.platform === 'linux')
cacheDirectory = process.env.XDG_CACHE_HOME || path.join(os.homedir(), '.cache');
else if (process.platform === 'darwin')
cacheDirectory = path.join(os.homedir(), 'Library', 'Caches');
else if (process.platform === 'win32')
cacheDirectory = process.env.LOCALAPPDATA || path.join(os.homedir(), 'AppData', 'Local');
else
throw new Error('Unsupported platform: ' + process.platform);
const result = path.join(cacheDirectory, 'ms-playwright', `mcp-${browserConfig?.launchOptions.channel ?? browserConfig?.browserName}-profile`);
await fs.promises.mkdir(result, { recursive: true });
return result;
}
export async function generateLocator(locator: playwright.Locator): Promise<string> {
return (locator as any)._generateLocatorString();
}