chore: remove src/externs.d.ts (#5811)

* chore: remove src/externs.d.ts

It defined global types that we don't want to use, and instead we move
to using interfaces that we import and reference just like with any
other interface.

This means other than Protocol (which I think is fine to leave as is),
there are no other magic global types and you have to import any types
or interfaces that you want.

package.json

@@ -26,7 +26,7 @@
     "eslint": "([ \"$CI\" = true ] && eslint --ext js --ext ts --quiet -f codeframe . || eslint --ext js --ext ts .)",
     "lint": "npm run eslint && npm run tsc && npm run doc",
     "doc": "node utils/doclint/cli.js",
-    "tsc": "tsc --version && tsc -p . && cp src/protocol.d.ts lib/ && cp src/externs.d.ts lib/",
+    "tsc": "tsc --version && tsc -p . && cp src/protocol.d.ts lib/",
     "apply-next-version": "node utils/apply_next_version.js",
     "test-types": "node utils/doclint/generate_types && tsc --version && tsc -p utils/doclint/generate_types/test/",
     "update-protocol-d-ts": "node utils/protocol-types-generator update",

src/Browser.ts

@@ -22,17 +22,18 @@ import {Events} from './Events';
 import {Connection} from './Connection';
 import {Page} from './Page';
 import {ChildProcess} from 'child_process';
+import type {Viewport} from './PuppeteerViewport';
 
 type BrowserCloseCallback = () => Promise<void> | void;
 
 export class Browser extends EventEmitter {
-  static async create(connection: Connection, contextIds: string[], ignoreHTTPSErrors: boolean, defaultViewport?: Puppeteer.Viewport, process?: ChildProcess, closeCallback?: BrowserCloseCallback): Promise<Browser> {
+  static async create(connection: Connection, contextIds: string[], ignoreHTTPSErrors: boolean, defaultViewport?: Viewport, process?: ChildProcess, closeCallback?: BrowserCloseCallback): Promise<Browser> {
     const browser = new Browser(connection, contextIds, ignoreHTTPSErrors, defaultViewport, process, closeCallback);
     await connection.send('Target.setDiscoverTargets', {discover: true});
     return browser;
   }
    _ignoreHTTPSErrors: boolean;
-   _defaultViewport?: Puppeteer.Viewport;
+   _defaultViewport?: Viewport;
    _process?: ChildProcess;
    _screenshotTaskQueue = new TaskQueue();
    _connection: Connection;
@@ -42,7 +43,7 @@ export class Browser extends EventEmitter {
    // TODO: once Target is in TypeScript we can type this properly.
    _targets: Map<string, Target>;
 
-   constructor(connection: Connection, contextIds: string[], ignoreHTTPSErrors: boolean, defaultViewport?: Puppeteer.Viewport, process?: ChildProcess, closeCallback?: BrowserCloseCallback) {
+   constructor(connection: Connection, contextIds: string[], ignoreHTTPSErrors: boolean, defaultViewport?: Viewport, process?: ChildProcess, closeCallback?: BrowserCloseCallback) {
      super();
      this._ignoreHTTPSErrors = ignoreHTTPSErrors;
      this._defaultViewport = defaultViewport;

src/Connection.ts

@@ -14,14 +14,12 @@
  * limitations under the License.
  */
 import {assert} from './helper';
-
-import EventsModule = require('./Events');
-const {Events} = EventsModule;
-
-import debug = require('debug');
+import {Events} from './Events';
+import * as debug from 'debug';
 const debugProtocol = debug('puppeteer:protocol');
 
-import EventEmitter = require('events');
+import type {ConnectionTransport} from './ConnectionTransport';
+import * as EventEmitter from 'events';
 
 interface ConnectionCallback {
     resolve: Function;
@@ -33,7 +31,7 @@ interface ConnectionCallback {
 
 export class Connection extends EventEmitter {
   _url: string;
-  _transport: Puppeteer.ConnectionTransport;
+  _transport: ConnectionTransport;
   _delay: number;
   _lastId = 0;
   _sessions: Map<string, CDPSession> = new Map();
@@ -41,12 +39,7 @@ export class Connection extends EventEmitter {
 
   _callbacks: Map<number, ConnectionCallback> = new Map();
 
-  /**
-   * @param {string} url
-   * @param {!Puppeteer.ConnectionTransport} transport
-   * @param {number=} delay
-   */
-  constructor(url: string, transport: Puppeteer.ConnectionTransport, delay = 0) {
+  constructor(url: string, transport: ConnectionTransport, delay = 0) {
     super();
     this._url = url;
     this._delay = delay;

src/ConnectionTransport.ts

@@ -0,0 +1,22 @@
+/**
+ * Copyright 2020 Google Inc. All rights reserved.
+ *
+ * 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.
+ */
+
+export interface ConnectionTransport {
+  send(string);
+  close();
+  onmessage?: (message: string) => void;
+  onclose?: () => void;
+}

src/EmulationManager.ts

@@ -14,6 +14,7 @@
  * limitations under the License.
  */
 import {CDPSession} from './Connection';
+import type {Viewport} from './PuppeteerViewport';
 
 export class EmulationManager {
   _client: CDPSession;
@@ -24,7 +25,7 @@ export class EmulationManager {
     this._client = client;
   }
 
-  async emulateViewport(viewport: Puppeteer.Viewport): Promise<boolean> {
+  async emulateViewport(viewport: Viewport): Promise<boolean> {
     const mobile = viewport.isMobile || false;
     const width = viewport.width;
     const height = viewport.height;

src/Launcher.ts

@@ -30,8 +30,10 @@ import {Connection} from './Connection';
 import {Browser} from './Browser';
 import {helper, assert, debugError} from './helper';
 import {TimeoutError} from './Errors';
+import type {ConnectionTransport} from './ConnectionTransport';
 import {WebSocketTransport} from './WebSocketTransport';
 import {PipeTransport} from './PipeTransport';
+import type {Viewport} from './PuppeteerViewport';
 
 const mkdtempAsync = helper.promisify(fs.mkdtemp);
 const removeFolderAsync = helper.promisify(removeFolder);
@@ -67,7 +69,7 @@ export interface LaunchOptions {
 
 export interface BrowserOptions {
   ignoreHTTPSErrors?: boolean;
-  defaultViewport?: Puppeteer.Viewport;
+  defaultViewport?: Viewport;
   slowMo?: number;
 }
 
@@ -344,7 +346,7 @@ class ChromeLauncher implements ProductLauncher {
   async connect(options: BrowserOptions & {
     browserWSEndpoint?: string;
     browserURL?: string;
-    transport?: Puppeteer.ConnectionTransport;
+    transport?: ConnectionTransport;
   }): Promise<Browser> {
     const {
       browserWSEndpoint,
@@ -451,7 +453,7 @@ class FirefoxLauncher implements ProductLauncher {
   async connect(options: BrowserOptions & {
     browserWSEndpoint?: string;
     browserURL?: string;
-    transport?: Puppeteer.ConnectionTransport;
+    transport?: ConnectionTransport;
   }): Promise<Browser> {
     const {
       browserWSEndpoint,

src/Page.ts

@@ -30,6 +30,7 @@ import {Worker as PuppeteerWorker} from './Worker';
 import {Browser, BrowserContext} from './Browser';
 import {Target} from './Target';
 import {createJSHandle, JSHandle, ElementHandle} from './JSHandle';
+import type {Viewport} from './PuppeteerViewport';
 import {Request as PuppeteerRequest, Response as PuppeteerResponse, Credentials} from './NetworkManager';
 import {Accessibility} from './Accessibility';
 import {TimeoutSettings} from './TimeoutSettings';
@@ -124,7 +125,7 @@ const paperFormats: Record<string, PaperFormat> = {
 } as const;
 
 export class Page extends EventEmitter {
-  static async create(client: CDPSession, target: Target, ignoreHTTPSErrors: boolean, defaultViewport: Puppeteer.Viewport | null, screenshotTaskQueue: TaskQueue): Promise<Page> {
+  static async create(client: CDPSession, target: Target, ignoreHTTPSErrors: boolean, defaultViewport: Viewport | null, screenshotTaskQueue: TaskQueue): Promise<Page> {
     const page = new Page(client, target, ignoreHTTPSErrors, screenshotTaskQueue);
     await page._initialize();
     if (defaultViewport)
@@ -146,7 +147,7 @@ export class Page extends EventEmitter {
   _pageBindings = new Map<string, Function>();
   _coverage: Coverage;
   _javascriptEnabled = true;
-  _viewport: Puppeteer.Viewport | null;
+  _viewport: Viewport | null;
   _screenshotTaskQueue: TaskQueue;
   _workers = new Map<string, PuppeteerWorker>();
   // TODO: improve this typedef - it's a function that takes a file chooser or something?
@@ -666,7 +667,7 @@ export class Page extends EventEmitter {
     await this._client.send('Page.bringToFront');
   }
 
-  async emulate(options: {viewport: Puppeteer.Viewport; userAgent: string}): Promise<void> {
+  async emulate(options: {viewport: Viewport; userAgent: string}): Promise<void> {
     await Promise.all([
       this.setViewport(options.viewport),
       this.setUserAgent(options.userAgent)
@@ -712,14 +713,14 @@ export class Page extends EventEmitter {
     }
   }
 
-  async setViewport(viewport: Puppeteer.Viewport): Promise<void> {
+  async setViewport(viewport: Viewport): Promise<void> {
     const needsReload = await this._emulationManager.emulateViewport(viewport);
     this._viewport = viewport;
     if (needsReload)
       await this.reload();
   }
 
-  viewport(): Puppeteer.Viewport | null {
+  viewport(): Viewport | null {
     return this._viewport;
   }
 

src/PipeTransport.ts

@@ -14,8 +14,9 @@
  * limitations under the License.
  */
 import {helper, debugError, PuppeteerEventListener} from './helper';
+import type {ConnectionTransport} from './ConnectionTransport';
 
-export class PipeTransport implements Puppeteer.ConnectionTransport {
+export class PipeTransport implements ConnectionTransport {
   _pipeWrite: NodeJS.WritableStream;
   _pendingMessage: string;
   _eventListeners: PuppeteerEventListener[];

src/Puppeteer.ts

@@ -17,6 +17,7 @@ import Launcher from './Launcher';
 import type {LaunchOptions, ChromeArgOptions, BrowserOptions, ProductLauncher} from './Launcher';
 import {BrowserFetcher, BrowserFetcherOptions} from './BrowserFetcher';
 import {puppeteerErrors, PuppeteerErrors} from './Errors';
+import type {ConnectionTransport} from './ConnectionTransport';
 
 import {devicesMap} from './DeviceDescriptors';
 import type {DevicesMap} from './/DeviceDescriptors';
@@ -48,7 +49,7 @@ export class Puppeteer {
   connect(options: BrowserOptions & {
     browserWSEndpoint?: string;
     browserURL?: string;
-    transport?: Puppeteer.ConnectionTransport;
+    transport?: ConnectionTransport;
     product?: string;
   }): Promise<Browser> {
     if (options.product)

src/PuppeteerViewport.ts

@@ -0,0 +1,23 @@
+/**
+ * Copyright 2020 Google Inc. All rights reserved.
+ *
+ * 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.
+ */
+export interface Viewport {
+  width: number;
+  height: number;
+  deviceScaleFactor?: number;
+  isMobile?: boolean;
+  isLandscape?: boolean;
+  hasTouch?: boolean;
+}

src/Target.ts

@@ -20,6 +20,7 @@ import {Worker as PuppeteerWorker} from './Worker';
 import {CDPSession} from './Connection';
 import {TaskQueue} from './TaskQueue';
 import {Browser, BrowserContext} from './Browser';
+import type {Viewport} from './PuppeteerViewport';
 
 export class Target {
   _targetInfo: Protocol.Target.TargetInfo;
@@ -27,7 +28,7 @@ export class Target {
   _targetId: string;
   _sessionFactory: () => Promise<CDPSession>;
   _ignoreHTTPSErrors: boolean;
-  _defaultViewport?: Puppeteer.Viewport;
+  _defaultViewport?: Viewport;
   _screenshotTaskQueue: TaskQueue;
   _pagePromise?: Promise<Page>;
   _workerPromise?: Promise<PuppeteerWorker>;
@@ -37,7 +38,7 @@ export class Target {
   _closedCallback: () => void;
   _isInitialized: boolean;
 
-  constructor(targetInfo: Protocol.Target.TargetInfo, browserContext: BrowserContext, sessionFactory: () => Promise<CDPSession>, ignoreHTTPSErrors: boolean, defaultViewport: Puppeteer.Viewport | null, screenshotTaskQueue: TaskQueue) {
+  constructor(targetInfo: Protocol.Target.TargetInfo, browserContext: BrowserContext, sessionFactory: () => Promise<CDPSession>, ignoreHTTPSErrors: boolean, defaultViewport: Viewport | null, screenshotTaskQueue: TaskQueue) {
     this._targetInfo = targetInfo;
     this._browserContext = browserContext;
     this._targetId = targetInfo.targetId;

src/WebSocketTransport.ts

@@ -14,8 +14,9 @@
  * limitations under the License.
  */
 import * as NodeWebSocket from 'ws';
+import type {ConnectionTransport} from './ConnectionTransport';
 
-export class WebSocketTransport implements Puppeteer.ConnectionTransport {
+export class WebSocketTransport implements ConnectionTransport {
   static create(url: string): Promise<WebSocketTransport> {
     return new Promise((resolve, reject) => {
       const ws = new NodeWebSocket(url, [], {

src/externs.d.ts

@@ -1,21 +0,0 @@
-import * as child_process from 'child_process';
-
-declare global {
-  module Puppeteer {
-    export interface ConnectionTransport {
-      send(string);
-      close();
-      onmessage?: (message: string) => void,
-      onclose?: () => void,
-    }
-
-    export type Viewport = {
-      width: number;
-      height: number;
-      deviceScaleFactor?: number;
-      isMobile?: boolean;
-      isLandscape?: boolean;
-      hasTouch?: boolean;
-    }
-  }
-}

utils/doclint/check_public_api/index.js

@@ -367,6 +367,34 @@ function compareDocumentations(actual, expected) {
         actualName: 'Array<Object>',
         expectedName: 'Array<MediaFeature>'
       }],
+      ['Method Page.emulate() options.viewport', {
+        actualName: 'Object',
+        expectedName: 'Viewport'
+      }],
+      ['Method Page.setViewport() options.viewport', {
+        actualName: 'Object',
+        expectedName: 'Viewport'
+      }],
+      ['Method Page.setViewport() viewport', {
+        actualName: 'Object',
+        expectedName: 'Viewport'
+      }],
+      ['Method Page.connect() options.defaultViewport', {
+        actualName: 'Object',
+        expectedName: 'Viewport'
+      }],
+      ['Method Puppeteer.connect() options.defaultViewport', {
+        actualName: 'Object',
+        expectedName: 'Viewport'
+      }],
+      ['Method Puppeteer.launch() options.defaultViewport', {
+        actualName: 'Object',
+        expectedName: 'Viewport'
+      }],
+      ['Method Page.launch() options.defaultViewport', {
+        actualName: 'Object',
+        expectedName: 'Viewport'
+      }],
       ['Method Page.goBack() options', {
         actualName: 'Object',
         expectedName: 'WaitForOptions'