chore: for not use Node's events in client (#34791)

Author: pavelfeldman

packages/playwright-core/src/client/android.ts

@@ -14,8 +14,7 @@
  * limitations under the License.
  */
 
-import { EventEmitter } from 'events';
-
+import { EventEmitter } from './eventEmitter';
 import { BrowserContext, prepareBrowserContextParams } from './browserContext';
 import { ChannelOwner } from './channelOwner';
 import { TargetClosedError, isTargetClosedError } from './errors';

packages/playwright-core/src/client/browserType.ts

@@ -14,8 +14,6 @@
  * limitations under the License.
  */
 
-import path from 'path';
-
 import { Browser } from './browser';
 import { BrowserContext, prepareBrowserContextParams } from './browserContext';
 import { ChannelOwner } from './channelOwner';
@@ -101,7 +99,7 @@ export class BrowserType extends ChannelOwner<channels.BrowserTypeChannel> imple
       ignoreAllDefaultArgs: !!options.ignoreDefaultArgs && !Array.isArray(options.ignoreDefaultArgs),
       env: options.env ? envObjectToArray(options.env) : undefined,
       channel: options.channel,
-      userDataDir: (path.isAbsolute(userDataDir) || !userDataDir) ? userDataDir : path.resolve(userDataDir),
+      userDataDir: (this._platform.path().isAbsolute(userDataDir) || !userDataDir) ? userDataDir : this._platform.path().resolve(userDataDir),
     };
     return await this._wrapApiCall(async () => {
       const result = await this._channel.launchPersistentContext(persistentParams);

packages/playwright-core/src/client/connection.ts

@@ -14,8 +14,8 @@
  * limitations under the License.
  */
 
-import { EventEmitter } from 'events';
 
+import { EventEmitter } from './eventEmitter';
 import { Android, AndroidDevice, AndroidSocket } from './android';
 import { Artifact } from './artifact';
 import { Browser } from './browser';

packages/playwright-core/src/client/eventEmitter.ts

@@ -22,8 +22,6 @@
  * USE OR OTHER DEALINGS IN THE SOFTWARE.
  */
 
-import { EventEmitter as OriginalEventEmitter } from 'events';
-
 import { isUnderTest } from '../utils/isomorphic/debug';
 
 import type { EventEmitter as EventEmitterType } from 'events';
@@ -32,6 +30,12 @@ type EventType = string | symbol;
 type Listener = (...args: any[]) => any;
 type EventMap = Record<EventType, Listener | Listener[]>;
 
+let defaultMaxListenersProvider = () => 10;
+
+export function setDefaultMaxListenersProvider(provider: () => number) {
+  defaultMaxListenersProvider = provider;
+}
+
 export class EventEmitter implements EventEmitterType {
 
   private _events: EventMap | undefined = undefined;
@@ -58,7 +62,7 @@ export class EventEmitter implements EventEmitterType {
   }
 
   getMaxListeners(): number {
-    return this._maxListeners === undefined ? OriginalEventEmitter.defaultMaxListeners : this._maxListeners;
+    return this._maxListeners === undefined ? defaultMaxListenersProvider() : this._maxListeners;
   }
 
   emit(type: EventType, ...args: any[]): boolean {

packages/playwright-core/src/client/frame.ts

@@ -15,8 +15,7 @@
  * limitations under the License.
  */
 
-import { EventEmitter } from 'events';
-
+import { EventEmitter } from './eventEmitter';
 import { ChannelOwner } from './channelOwner';
 import { addSourceUrlToScript } from './clientHelper';
 import { ElementHandle, convertInputFiles, convertSelectOptionValues } from './elementHandle';

packages/playwright-core/src/client/network.ts

@@ -14,8 +14,6 @@
  * limitations under the License.
  */
 
-import { URLSearchParams } from 'url';
-
 import { ChannelOwner } from './channelOwner';
 import { isTargetClosedError } from './errors';
 import { Events } from './events';

packages/playwright-core/src/client/page.ts

@@ -799,7 +799,7 @@ export class Page extends ChannelOwner<channels.PageChannel> implements api.Page
   }
 
   async pause(_options?: { __testHookKeepTestTimeout: boolean }) {
-    if (require('inspector').url())
+    if (this._platform.isDebuggerAttached())
       return;
     const defaultNavigationTimeout = this._browserContext._timeoutSettings.defaultNavigationTimeout();
     const defaultTimeout = this._browserContext._timeoutSettings.defaultTimeout();

packages/playwright-core/src/common/platform.ts

@@ -42,6 +42,7 @@ export type Platform = {
   createGuid: () => string;
   fs: () => typeof fs;
   inspectCustom: symbol | undefined;
+  isDebuggerAttached(): boolean;
   isLogEnabled(name: 'api' | 'channel'): boolean;
   log(name: 'api' | 'channel', message: string | Error | object): void;
   path: () => typeof path;
@@ -70,6 +71,7 @@ export const webPlatform: Platform = {
 
   inspectCustom: undefined,
 
+  isDebuggerAttached: () => false,
 
   isLogEnabled(name: 'api' | 'channel') {
     return false;
@@ -105,6 +107,8 @@ export const emptyPlatform: Platform = {
 
   inspectCustom: undefined,
 
+  isDebuggerAttached: () => false,
+
   isLogEnabled(name: 'api' | 'channel') {
     return false;
   },

packages/playwright-core/src/inProcessFactory.ts

@@ -14,7 +14,8 @@
  * limitations under the License.
  */
 
-import path from 'path';
+import * as path from 'path';
+import { EventEmitter } from 'events';
 
 import { AndroidServerLauncherImpl } from './androidServerImpl';
 import { BrowserServerLauncherImpl } from './browserServerImpl';
@@ -25,6 +26,7 @@ import { setDebugMode } from './utils/isomorphic/debug';
 import { getFromENV } from './server/utils/env';
 import { nodePlatform } from './server/utils/nodePlatform';
 import { setPlatformForSelectors } from './client/selectors';
+import { setDefaultMaxListenersProvider } from './client/eventEmitter';
 
 import type { Playwright as PlaywrightAPI } from './client/playwright';
 import type { Language } from './utils';
@@ -35,6 +37,7 @@ export function createInProcessPlaywright(platform: Platform): PlaywrightAPI {
   const playwright = createPlaywright({ sdkLanguage: (process.env.PW_LANG_NAME as Language | undefined) || 'javascript' });
   setDebugMode(getFromENV('PWDEBUG') || '');
   setPlatformForSelectors(nodePlatform);
+  setDefaultMaxListenersProvider(() => EventEmitter.defaultMaxListeners);
 
   setLibraryStackPrefix(path.join(__dirname, '..'));
 

packages/playwright-core/src/server/utils/nodePlatform.ts

@@ -67,6 +67,8 @@ export const nodePlatform: Platform = {
 
   inspectCustom: util.inspect.custom,
 
+  isDebuggerAttached: () => !!require('inspector').url(),
+
   isLogEnabled(name: 'api' | 'channel') {
     return debugLogger.isEnabled(name);
   },