text: "use strict";
  /**
   * Copyright 2017 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.
   */
  Object.defineProperty(exports, "__esModule", { value: true });
  exports.Page = void 0;
  const fs = require("fs");
  const EventEmitter = require("events");
  const mime = require("mime");
  const Events_1 = require("./Events");
  const Connection_1 = require("./Connection");
  const Dialog_1 = require("./Dialog");
  const EmulationManager_1 = require("./EmulationManager");
  const FrameManager_1 = require("./FrameManager");
  const Input_1 = require("./Input");
  const Tracing_1 = require("./Tracing");
  const helper_1 = require("./helper");
  const Coverage_1 = require("./Coverage");
  const WebWorker_1 = require("./WebWorker");
  const JSHandle_1 = require("./JSHandle");
  const Accessibility_1 = require("./Accessibility");
  const TimeoutSettings_1 = require("./TimeoutSettings");
  const FileChooser_1 = require("./FileChooser");
  const ConsoleMessage_1 = require("./ConsoleMessage");
  const writeFileAsync = helper_1.helper.promisify(fs.writeFile);
  const paperFormats = {
      letter: { width: 8.5, height: 11 },
      legal: { width: 8.5, height: 14 },
      tabloid: { width: 11, height: 17 },
      ledger: { width: 17, height: 11 },
      a0: { width: 33.1, height: 46.8 },
      a1: { width: 23.4, height: 33.1 },
      a2: { width: 16.54, height: 23.4 },
      a3: { width: 11.7, height: 16.54 },
      a4: { width: 8.27, height: 11.7 },
      a5: { width: 5.83, height: 8.27 },
      a6: { width: 4.13, height: 5.83 },
  };
  var VisionDeficiency;
  (function (VisionDeficiency) {
      VisionDeficiency["none"] = "none";
      VisionDeficiency["achromatopsia"] = "achromatopsia";
      VisionDeficiency["blurredVision"] = "blurredVision";
      VisionDeficiency["deuteranopia"] = "deuteranopia";
      VisionDeficiency["protanopia"] = "protanopia";
      VisionDeficiency["tritanopia"] = "tritanopia";
  })(VisionDeficiency || (VisionDeficiency = {}));
  class ScreenshotTaskQueue {
      constructor() {
          this._chain = Promise.resolve(undefined);
      }
      postTask(task) {
          const result = this._chain.then(task);
          this._chain = result.catch(() => { });
          return result;
      }
  }
  class Page extends EventEmitter {
      constructor(client, target, ignoreHTTPSErrors) {
          super();
          this._closed = false;
          this._timeoutSettings = new TimeoutSettings_1.TimeoutSettings();
          this._pageBindings = new Map();
          this._javascriptEnabled = true;
          this._workers = new Map();
          // TODO: improve this typedef - it's a function that takes a file chooser or something?
          this._fileChooserInterceptors = new Set();
          this._client = client;
          this._target = target;
          this._keyboard = new Input_1.Keyboard(client);
          this._mouse = new Input_1.Mouse(client, this._keyboard);
          this._touchscreen = new Input_1.Touchscreen(client, this._keyboard);
          this._accessibility = new Accessibility_1.Accessibility(client);
          this._frameManager = new FrameManager_1.FrameManager(client, this, ignoreHTTPSErrors, this._timeoutSettings);
          this._emulationManager = new EmulationManager_1.EmulationManager(client);
          this._tracing = new Tracing_1.Tracing(client);
          this._coverage = new Coverage_1.Coverage(client);
          this._screenshotTaskQueue = new ScreenshotTaskQueue();
          this._viewport = null;
          client.on('Target.attachedToTarget', (event) => {
              if (event.targetInfo.type !== 'worker') {
                  // If we don't detach from service workers, they will never die.
                  client
                      .send('Target.detachFromTarget', {
                      sessionId: event.sessionId,
                  })
                      .catch(helper_1.debugError);
                  return;
              }
              const session = Connection_1.Connection.fromSession(client).session(event.sessionId);
              const worker = new WebWorker_1.WebWorker(session, event.targetInfo.url, this._addConsoleMessage.bind(this), this._handleException.bind(this));
              this._workers.set(event.sessionId, worker);
              this.emit(Events_1.Events.Page.WorkerCreated, worker);
          });
          client.on('Target.detachedFromTarget', (event) => {
              const worker = this._workers.get(event.sessionId);
              if (!worker)
                  return;
              this.emit(Events_1.Events.Page.WorkerDestroyed, worker);
              this._workers.delete(event.sessionId);
          });
          this._frameManager.on(Events_1.Events.FrameManager.FrameAttached, (event) => this.emit(Events_1.Events.Page.FrameAttached, event));
          this._frameManager.on(Events_1.Events.FrameManager.FrameDetached, (event) => this.emit(Events_1.Events.Page.FrameDetached, event));
          this._frameManager.on(Events_1.Events.FrameManager.FrameNavigated, (event) => this.emit(Events_1.Events.Page.FrameNavigated, event));
          const networkManager = this._frameManager.networkManager();
          networkManager.on(Events_1.Events.NetworkManager.Request, (event) => this.emit(Events_1.Events.Page.Request, event));
          networkManager.on(Events_1.Events.NetworkManager.Response, (event) => this.emit(Events_1.Events.Page.Response, event));
          networkManager.on(Events_1.Events.NetworkManager.RequestFailed, (event) => this.emit(Events_1.Events.Page.RequestFailed, event));
          networkManager.on(Events_1.Events.NetworkManager.RequestFinished, (event) => this.emit(Events_1.Events.Page.RequestFinished, event));
          this._fileChooserInterceptors = new Set();
          client.on('Page.domContentEventFired', () => this.emit(Events_1.Events.Page.DOMContentLoaded));
          client.on('Page.loadEventFired', () => this.emit(Events_1.Events.Page.Load));
          client.on('Runtime.consoleAPICalled', (event) => this._onConsoleAPI(event));
          client.on('Runtime.bindingCalled', (event) => this._onBindingCalled(event));
          client.on('Page.javascriptDialogOpening', (event) => this._onDialog(event));
          client.on('Runtime.exceptionThrown', (exception) => this._handleException(exception.exceptionDetails));
          client.on('Inspector.targetCrashed', () => this._onTargetCrashed());
          client.on('Performance.metrics', (event) => this._emitMetrics(event));
          client.on('Log.entryAdded', (event) => this._onLogEntryAdded(event));
          client.on('Page.fileChooserOpened', (event) => this._onFileChooser(event));
          this._target._isClosedPromise.then(() => {
              this.emit(Events_1.Events.Page.Close);
              this._closed = true;
          });
      }
      static async create(client, target, ignoreHTTPSErrors, defaultViewport) {
          const page = new Page(client, target, ignoreHTTPSErrors);
          await page._initialize();
          if (defaultViewport)
              await page.setViewport(defaultViewport);
          return page;
      }
      async _initialize() {
          await Promise.all([
              this._frameManager.initialize(),
              this._client.send('Target.setAutoAttach', {
                  autoAttach: true,
                  waitForDebuggerOnStart: false,
                  flatten: true,
              }),
              this._client.send('Performance.enable', {}),
              this._client.send('Log.enable', {}),
          ]);
      }
      async _onFileChooser(event) {
          if (!this._fileChooserInterceptors.size)
              return;
          const frame = this._frameManager.frame(event.frameId);
          const context = await frame.executionContext();
          const element = await context._adoptBackendNodeId(event.backendNodeId);
          const interceptors = Array.from(this._fileChooserInterceptors);
          this._fileChooserInterceptors.clear();
          const fileChooser = new FileChooser_1.FileChooser(element, event);
          for (const interceptor of interceptors)
              interceptor.call(null, fileChooser);
      }
      async waitForFileChooser(options = {}) {
          if (!this._fileChooserInterceptors.size)
              await this._client.send('Page.setInterceptFileChooserDialog', {
                  enabled: true,
              });
          const { timeout = this._timeoutSettings.timeout() } = options;
          let callback;
          const promise = new Promise((x) => (callback = x));
          this._fileChooserInterceptors.add(callback);
          return helper_1.helper
              .waitWithTimeout(promise, 'waiting for file chooser', timeout)
              .catch((error) => {
              this._fileChooserInterceptors.delete(callback);
              throw error;
          });
      }
      async setGeolocation(options) {
          const { longitude, latitude, accuracy = 0 } = options;
          if (longitude < -180 || longitude > 180)
              throw new Error(`Invalid longitude "${longitude}": precondition -180 <= LONGITUDE <= 180 failed.`);
          if (latitude < -90 || latitude > 90)
              throw new Error(`Invalid latitude "${latitude}": precondition -90 <= LATITUDE <= 90 failed.`);
          if (accuracy < 0)
              throw new Error(`Invalid accuracy "${accuracy}": precondition 0 <= ACCURACY failed.`);
          await this._client.send('Emulation.setGeolocationOverride', {
              longitude,
              latitude,
              accuracy,
          });
      }
      target() {
          return this._target;
      }
      browser() {
          return this._target.browser();
      }
      browserContext() {
          return this._target.browserContext();
      }
      _onTargetCrashed() {
          this.emit('error', new Error('Page crashed!'));
      }
      _onLogEntryAdded(event) {
          const { level, text, args, source, url, lineNumber } = event.entry;
          if (args)
              args.map((arg) => helper_1.helper.releaseObject(this._client, arg));
          if (source !== 'worker')
              this.emit(Events_1.Events.Page.Console, new ConsoleMessage_1.ConsoleMessage(level, text, [], { url, lineNumber }));
      }
      mainFrame() {
          return this._frameManager.mainFrame();
      }
      get keyboard() {
          return this._keyboard;
      }
      get touchscreen() {
          return this._touchscreen;
      }
      get coverage() {
          return this._coverage;
      }
      get tracing() {
          return this._tracing;
      }
      get accessibility() {
          return this._accessibility;
      }
      frames() {
          return this._frameManager.frames();
      }
      workers() {
          return Array.from(this._workers.values());
      }
      async setRequestInterception(value) {
          return this._frameManager.networkManager().setRequestInterception(value);
      }
      setOfflineMode(enabled) {
          return this._frameManager.networkManager().setOfflineMode(enabled);
      }
      setDefaultNavigationTimeout(timeout) {
          this._timeoutSettings.setDefaultNavigationTimeout(timeout);
      }
      setDefaultTimeout(timeout) {
          this._timeoutSettings.setDefaultTimeout(timeout);
      }
      async $(selector) {
          return this.mainFrame().$(selector);
      }
      async evaluateHandle(pageFunction, ...args) {
          const context = await this.mainFrame().executionContext();
          return context.evaluateHandle(pageFunction, ...args);
      }
      async queryObjects(prototypeHandle) {
          const context = await this.mainFrame().executionContext();
          return context.queryObjects(prototypeHandle);
      }
      async $eval(selector, pageFunction, ...args) {
          return this.mainFrame().$eval(selector, pageFunction, ...args);
      }
      async $$eval(selector, pageFunction, ...args) {
          return this.mainFrame().$$eval(selector, pageFunction, ...args);
      }
      async $$(selector) {
          return this.mainFrame().$$(selector);
      }
      async $x(expression) {
          return this.mainFrame().$x(expression);
      }
      async cookies(...urls) {
          const originalCookies = (await this._client.send('Network.getCookies', {
              urls: urls.length ? urls : [this.url()],
          })).cookies;
          const unsupportedCookieAttributes = ['priority'];
          const filterUnsupportedAttributes = (cookie) => {
              for (const attr of unsupportedCookieAttributes)
                  delete cookie[attr];
              return cookie;
          };
          return originalCookies.map(filterUnsupportedAttributes);
      }
      async deleteCookie(...cookies) {
          const pageURL = this.url();
          for (const cookie of cookies) {
              const item = Object.assign({}, cookie);
              if (!cookie.url && pageURL.startsWith('http'))
                  item.url = pageURL;
              await this._client.send('Network.deleteCookies', item);
          }
      }
      async setCookie(...cookies) {
          const pageURL = this.url();
          const startsWithHTTP = pageURL.startsWith('http');
          const items = cookies.map((cookie) => {
              const item = Object.assign({}, cookie);
              if (!item.url && startsWithHTTP)
                  item.url = pageURL;
              helper_1.assert(item.url !== 'about:blank', `Blank page can not have cookie "${item.name}"`);
              helper_1.assert(!String.prototype.startsWith.call(item.url || '', 'data:'), `Data URL page can not have cookie "${item.name}"`);
              return item;
          });
          await this.deleteCookie(...items);
          if (items.length)
              await this._client.send('Network.setCookies', { cookies: items });
      }
      async addScriptTag(options) {
          return this.mainFrame().addScriptTag(options);
      }
      async addStyleTag(options) {
          return this.mainFrame().addStyleTag(options);
      }
      async exposeFunction(name, puppeteerFunction) {
          if (this._pageBindings.has(name))
              throw new Error(`Failed to add page binding with name ${name}: window['${name}'] already exists!`);
          this._pageBindings.set(name, puppeteerFunction);
          const expression = helper_1.helper.evaluationString(addPageBinding, name);
          await this._client.send('Runtime.addBinding', { name: name });
          await this._client.send('Page.addScriptToEvaluateOnNewDocument', {
              source: expression,
          });
          await Promise.all(this.frames().map((frame) => frame.evaluate(expression).catch(helper_1.debugError)));
          function addPageBinding(bindingName) {
              /* Cast window to any here as we're about to add properties to it
               * via win[bindingName] which TypeScript doesn't like.
               */
              const win = window;
              const binding = win[bindingName];
              win[bindingName] = (...args) => {
                  const me = window[bindingName];
                  let callbacks = me['callbacks'];
                  if (!callbacks) {
                      callbacks = new Map();
                      me['callbacks'] = callbacks;
                  }
                  const seq = (me['lastSeq'] || 0) + 1;
                  me['lastSeq'] = seq;
                  const promise = new Promise((resolve, reject) => callbacks.set(seq, { resolve, reject }));
                  binding(JSON.stringify({ name: bindingName, seq, args }));
                  return promise;
              };
          }
      }
      async authenticate(credentials) {
          return this._frameManager.networkManager().authenticate(credentials);
      }
      async setExtraHTTPHeaders(headers) {
          return this._frameManager.networkManager().setExtraHTTPHeaders(headers);
      }
      async setUserAgent(userAgent) {
          return this._frameManager.networkManager().setUserAgent(userAgent);
      }
      async metrics() {
          const response = await this._client.send('Performance.getMetrics');
          return this._buildMetricsObject(response.metrics);
      }
      _emitMetrics(event) {
          this.emit(Events_1.Events.Page.Metrics, {
              title: event.title,
              metrics: this._buildMetricsObject(event.metrics),
          });
      }
      _buildMetricsObject(metrics) {
          const result = {};
          for (const metric of metrics || []) {
              if (supportedMetrics.has(metric.name))
                  result[metric.name] = metric.value;
          }
          return result;
      }
      _handleException(exceptionDetails) {
          const message = helper_1.helper.getExceptionMessage(exceptionDetails);
          const err = new Error(message);
          err.stack = ''; // Don't report clientside error with a node stack attached
          this.emit(Events_1.Events.Page.PageError, err);
      }
      async _onConsoleAPI(event) {
          if (event.executionContextId === 0) {
              // DevTools protocol stores the last 1000 console messages. These
              // messages are always reported even for removed execution contexts. In
              // this case, they are marked with executionContextId = 0 and are
              // reported upon enabling Runtime agent.
              //
              // Ignore these messages since:
              // - there's no execution context we can use to operate with message
              //   arguments
              // - these messages are reported before Puppeteer clients can subscribe
              //   to the 'console'
              //   page event.
              //
              // @see https://github.com/puppeteer/puppeteer/issues/3865
              return;
          }
          const context = this._frameManager.executionContextById(event.executionContextId);
          const values = event.args.map((arg) => JSHandle_1.createJSHandle(context, arg));
          this._addConsoleMessage(event.type, values, event.stackTrace);
      }
      async _onBindingCalled(event) {
          const { name, seq, args } = JSON.parse(event.payload);
          let expression = null;
          try {
              const result = await this._pageBindings.get(name)(...args);
              expression = helper_1.helper.evaluationString(deliverResult, name, seq, result);
          }
          catch (error) {
              if (error instanceof Error)
                  expression = helper_1.helper.evaluationString(deliverError, name, seq, error.message, error.stack);
              else
                  expression = helper_1.helper.evaluationString(deliverErrorValue, name, seq, error);
          }
          this._client
              .send('Runtime.evaluate', {
              expression,
              contextId: event.executionContextId,
          })
              .catch(helper_1.debugError);
          function deliverResult(name, seq, result) {
              window[name]['callbacks'].get(seq).resolve(result);
              window[name]['callbacks'].delete(seq);
          }
          function deliverError(name, seq, message, stack) {
              const error = new Error(message);
              error.stack = stack;
              window[name]['callbacks'].get(seq).reject(error);
              window[name]['callbacks'].delete(seq);
          }
          function deliverErrorValue(name, seq, value) {
              window[name]['callbacks'].get(seq).reject(value);
              window[name]['callbacks'].delete(seq);
          }
      }
      _addConsoleMessage(type, args, stackTrace) {
          if (!this.listenerCount(Events_1.Events.Page.Console)) {
              args.forEach((arg) => arg.dispose());
              return;
          }
          const textTokens = [];
          for (const arg of args) {
              const remoteObject = arg._remoteObject;
              if (remoteObject.objectId)
                  textTokens.push(arg.toString());
              else
                  textTokens.push(helper_1.helper.valueFromRemoteObject(remoteObject));
          }
          const location = stackTrace && stackTrace.callFrames.length
              ? {
                  url: stackTrace.callFrames[0].url,
                  lineNumber: stackTrace.callFrames[0].lineNumber,
                  columnNumber: stackTrace.callFrames[0].columnNumber,
              }
              : {};
          const message = new ConsoleMessage_1.ConsoleMessage(type, textTokens.join(' '), args, location);
          this.emit(Events_1.Events.Page.Console, message);
      }
      _onDialog(event) {
          let dialogType = null;
          if (event.type === 'alert')
              dialogType = Dialog_1.Dialog.Type.Alert;
          else if (event.type === 'confirm')
              dialogType = Dialog_1.Dialog.Type.Confirm;
          else if (event.type === 'prompt')
              dialogType = Dialog_1.Dialog.Type.Prompt;
          else if (event.type === 'beforeunload')
              dialogType = Dialog_1.Dialog.Type.BeforeUnload;
          helper_1.assert(dialogType, 'Unknown javascript dialog type: ' + event.type);
          const dialog = new Dialog_1.Dialog(this._client, dialogType, event.message, event.defaultPrompt);
          this.emit(Events_1.Events.Page.Dialog, dialog);
      }
      url() {
          return this.mainFrame().url();
      }
      async content() {
          return await this._frameManager.mainFrame().content();
      }
      async setContent(html, options) {
          await this._frameManager.mainFrame().setContent(html, options);
      }
      async goto(url, options) {
          return await this._frameManager.mainFrame().goto(url, options);
      }
      async reload(options) {
          const result = await Promise.all([this.waitForNavigation(options), this._client.send('Page.reload')]);
          return result[0];
      }
      async waitForNavigation(options = {}) {
          return await this._frameManager.mainFrame().waitForNavigation(options);
      }
      _sessionClosePromise() {
          if (!this._disconnectPromise)
              this._disconnectPromise = new Promise((fulfill) => this._client.once(Events_1.Events.CDPSession.Disconnected, () => fulfill(new Error('Target closed'))));
          return this._disconnectPromise;
      }
      async waitForRequest(urlOrPredicate, options = {}) {
          const { timeout = this._timeoutSettings.timeout() } = options;
          return helper_1.helper.waitForEvent(this._frameManager.networkManager(), Events_1.Events.NetworkManager.Request, (request) => {
              if (helper_1.helper.isString(urlOrPredicate))
                  return urlOrPredicate === request.url();
              if (typeof urlOrPredicate === 'function')
                  return !!urlOrPredicate(request);
              return false;
          }, timeout, this._sessionClosePromise());
      }
      async waitForResponse(urlOrPredicate, options = {}) {
          const { timeout = this._timeoutSettings.timeout() } = options;
          return helper_1.helper.waitForEvent(this._frameManager.networkManager(), Events_1.Events.NetworkManager.Response, (response) => {
              if (helper_1.helper.isString(urlOrPredicate))
                  return urlOrPredicate === response.url();
              if (typeof urlOrPredicate === 'function')
                  return !!urlOrPredicate(response);
              return false;
          }, timeout, this._sessionClosePromise());
      }
      async goBack(options) {
          return this._go(-1, options);
      }
      async goForward(options) {
          return this._go(+1, options);
      }
      async _go(delta, options) {
          const history = await this._client.send('Page.getNavigationHistory');
          const entry = history.entries[history.currentIndex + delta];
          if (!entry)
              return null;
          const result = await Promise.all([
              this.waitForNavigation(options),
              this._client.send('Page.navigateToHistoryEntry', { entryId: entry.id }),
          ]);
          return result[0];
      }
      async bringToFront() {
          await this._client.send('Page.bringToFront');
      }
      async emulate(options) {
          await Promise.all([
              this.setViewport(options.viewport),
              this.setUserAgent(options.userAgent),
          ]);
      }
      async setJavaScriptEnabled(enabled) {
          if (this._javascriptEnabled === enabled)
              return;
          this._javascriptEnabled = enabled;
          await this._client.send('Emulation.setScriptExecutionDisabled', {
              value: !enabled,
          });
      }
      async setBypassCSP(enabled) {
          await this._client.send('Page.setBypassCSP', { enabled });
      }
      async emulateMediaType(type) {
          helper_1.assert(type === 'screen' || type === 'print' || type === null, 'Unsupported media type: ' + type);
          await this._client.send('Emulation.setEmulatedMedia', {
              media: type || '',
          });
      }
      async emulateMediaFeatures(features) {
          if (features === null)
              await this._client.send('Emulation.setEmulatedMedia', { features: null });
          if (Array.isArray(features)) {
              features.every((mediaFeature) => {
                  const name = mediaFeature.name;
                  helper_1.assert(/^prefers-(?:color-scheme|reduced-motion)$/.test(name), 'Unsupported media feature: ' + name);
                  return true;
              });
              await this._client.send('Emulation.setEmulatedMedia', {
                  features: features,
              });
          }
      }
      async emulateTimezone(timezoneId) {
          try {
              await this._client.send('Emulation.setTimezoneOverride', {
                  timezoneId: timezoneId || '',
              });
          }
          catch (error) {
              if (error.message.includes('Invalid timezone'))
                  throw new Error(`Invalid timezone ID: ${timezoneId}`);
              throw error;
          }
      }
      async emulateVisionDeficiency(type) {
          const visionDeficiencies = new Set(Object.keys(VisionDeficiency));
          try {
              helper_1.assert(!type || visionDeficiencies.has(type), `Unsupported vision deficiency: ${type}`);
              await this._client.send('Emulation.setEmulatedVisionDeficiency', {
                  type: type || 'none',
              });
          }
          catch (error) {
              throw error;
          }
      }
      async setViewport(viewport) {
          const needsReload = await this._emulationManager.emulateViewport(viewport);
          this._viewport = viewport;
          if (needsReload)
              await this.reload();
      }
      viewport() {
          return this._viewport;
      }
      async evaluate(pageFunction, ...args) {
          return this._frameManager
              .mainFrame()
              .evaluate(pageFunction, ...args);
      }
      async evaluateOnNewDocument(pageFunction, ...args) {
          const source = helper_1.helper.evaluationString(pageFunction, ...args);
          await this._client.send('Page.addScriptToEvaluateOnNewDocument', {
              source,
          });
      }
      async setCacheEnabled(enabled = true) {
          await this._frameManager.networkManager().setCacheEnabled(enabled);
      }
      async screenshot(options = {}) {
          let screenshotType = null;
          // options.type takes precedence over inferring the type from options.path
          // because it may be a 0-length file with no extension created beforehand (i.e. as a temp file).
          if (options.type) {
              helper_1.assert(options.type === 'png' || options.type === 'jpeg', 'Unknown options.type value: ' + options.type);
              screenshotType = options.type;
          }
          else if (options.path) {
              const mimeType = mime.getType(options.path);
              if (mimeType === 'image/png')
                  screenshotType = 'png';
              else if (mimeType === 'image/jpeg')
                  screenshotType = 'jpeg';
              helper_1.assert(screenshotType, 'Unsupported screenshot mime type: ' + mimeType);
          }
          if (!screenshotType)
              screenshotType = 'png';
          if (options.quality) {
              helper_1.assert(screenshotType === 'jpeg', 'options.quality is unsupported for the ' +
                  screenshotType +
                  ' screenshots');
              helper_1.assert(typeof options.quality === 'number', 'Expected options.quality to be a number but found ' +
                  typeof options.quality);
              helper_1.assert(Number.isInteger(options.quality), 'Expected options.quality to be an integer');
              helper_1.assert(options.quality >= 0 && options.quality <= 100, 'Expected options.quality to be between 0 and 100 (inclusive), got ' +
                  options.quality);
          }
          helper_1.assert(!options.clip || !options.fullPage, 'options.clip and options.fullPage are exclusive');
          if (options.clip) {
              helper_1.assert(typeof options.clip.x === 'number', 'Expected options.clip.x to be a number but found ' +
                  typeof options.clip.x);
              helper_1.assert(typeof options.clip.y === 'number', 'Expected options.clip.y to be a number but found ' +
                  typeof options.clip.y);
              helper_1.assert(typeof options.clip.width === 'number', 'Expected options.clip.width to be a number but found ' +
                  typeof options.clip.width);
              helper_1.assert(typeof options.clip.height === 'number', 'Expected options.clip.height to be a number but found ' +
                  typeof options.clip.height);
              helper_1.assert(options.clip.width !== 0, 'Expected options.clip.width not to be 0.');
              helper_1.assert(options.clip.height !== 0, 'Expected options.clip.height not to be 0.');
          }
          return this._screenshotTaskQueue.postTask(() => this._screenshotTask(screenshotType, options));
      }
      async _screenshotTask(format, options) {
          await this._client.send('Target.activateTarget', {
              targetId: this._target._targetId,
          });
          let clip = options.clip ? processClip(options.clip) : undefined;
          if (options.fullPage) {
              const metrics = await this._client.send('Page.getLayoutMetrics');
              const width = Math.ceil(metrics.contentSize.width);
              const height = Math.ceil(metrics.contentSize.height);
              // Overwrite clip for full page at all times.
              clip = { x: 0, y: 0, width, height, scale: 1 };
              const { isMobile = false, deviceScaleFactor = 1, isLandscape = false } = this._viewport || {};
              const screenOrientation = isLandscape
                  ? { angle: 90, type: 'landscapePrimary' }
                  : { angle: 0, type: 'portraitPrimary' };
              await this._client.send('Emulation.setDeviceMetricsOverride', {
                  mobile: isMobile,
                  width,
                  height,
                  deviceScaleFactor,
                  screenOrientation,
              });
          }
          const shouldSetDefaultBackground = options.omitBackground && format === 'png';
          if (shouldSetDefaultBackground)
              await this._client.send('Emulation.setDefaultBackgroundColorOverride', {
                  color: { r: 0, g: 0, b: 0, a: 0 },
              });
          const result = await this._client.send('Page.captureScreenshot', {
              format,
              quality: options.quality,
              clip,
          });
          if (shouldSetDefaultBackground)
              await this._client.send('Emulation.setDefaultBackgroundColorOverride');
          if (options.fullPage && this._viewport)
              await this.setViewport(this._viewport);
          const buffer = options.encoding === 'base64'
              ? result.data
              : Buffer.from(result.data, 'base64');
          if (options.path)
              await writeFileAsync(options.path, buffer);
          return buffer;
          function processClip(clip) {
              const x = Math.round(clip.x);
              const y = Math.round(clip.y);
              const width = Math.round(clip.width + clip.x - x);
              const height = Math.round(clip.height + clip.y - y);
              return { x, y, width, height, scale: 1 };
          }
      }
      async pdf(options = {}) {
          const { scale = 1, displayHeaderFooter = false, headerTemplate = '', footerTemplate = '', printBackground = false, landscape = false, pageRanges = '', preferCSSPageSize = false, margin = {}, path = null, } = options;
          let paperWidth = 8.5;
          let paperHeight = 11;
          if (options.format) {
              const format = paperFormats[options.format.toLowerCase()];
              helper_1.assert(format, 'Unknown paper format: ' + options.format);
              paperWidth = format.width;
              paperHeight = format.height;
          }
          else {
              paperWidth = convertPrintParameterToInches(options.width) || paperWidth;
              paperHeight =
                  convertPrintParameterToInches(options.height) || paperHeight;
          }
          const marginTop = convertPrintParameterToInches(margin.top) || 0;
          const marginLeft = convertPrintParameterToInches(margin.left) || 0;
          const marginBottom = convertPrintParameterToInches(margin.bottom) || 0;
          const marginRight = convertPrintParameterToInches(margin.right) || 0;
          const result = await this._client.send('Page.printToPDF', {
              transferMode: 'ReturnAsStream',
              landscape,
              displayHeaderFooter,
              headerTemplate,
              footerTemplate,
              printBackground,
              scale,
              paperWidth,
              paperHeight,
              marginTop,
              marginBottom,
              marginLeft,
              marginRight,
              pageRanges,
              preferCSSPageSize,
          });
          return await helper_1.helper.readProtocolStream(this._client, result.stream, path);
      }
      async title() {
          return this.mainFrame().title();
      }
      async close(options = { runBeforeUnload: undefined }) {
          helper_1.assert(!!this._client._connection, 'Protocol error: Connection closed. Most likely the page has been closed.');
          const runBeforeUnload = !!options.runBeforeUnload;
          if (runBeforeUnload) {
              await this._client.send('Page.close');
          }
          else {
              await this._client._connection.send('Target.closeTarget', {
                  targetId: this._target._targetId,
              });
              await this._target._isClosedPromise;
          }
      }
      isClosed() {
          return this._closed;
      }
      get mouse() {
          return this._mouse;
      }
      click(selector, options = {}) {
          return this.mainFrame().click(selector, options);
      }
      focus(selector) {
          return this.mainFrame().focus(selector);
      }
      hover(selector) {
          return this.mainFrame().hover(selector);
      }
      select(selector, ...values) {
          return this.mainFrame().select(selector, ...values);
      }
      tap(selector) {
          return this.mainFrame().tap(selector);
      }
      type(selector, text, options) {
          return this.mainFrame().type(selector, text, options);
      }
      waitFor(selectorOrFunctionOrTimeout, options = {}, ...args) {
          return this.mainFrame().waitFor(selectorOrFunctionOrTimeout, options, ...args);
      }
      waitForSelector(selector, options = {}) {
          return this.mainFrame().waitForSelector(selector, options);
      }
      waitForXPath(xpath, options = {}) {
          return this.mainFrame().waitForXPath(xpath, options);
      }
      waitForFunction(pageFunction, options = {}, ...args) {
          return this.mainFrame().waitForFunction(pageFunction, options, ...args);
      }
  }
  exports.Page = Page;
  const supportedMetrics = new Set([
      'Timestamp',
      'Documents',
      'Frames',
      'JSEventListeners',
      'Nodes',
      'LayoutCount',
      'RecalcStyleCount',
      'LayoutDuration',
      'RecalcStyleDuration',
      'ScriptDuration',
      'TaskDuration',
      'JSHeapUsedSize',
      'JSHeapTotalSize',
  ]);
  const unitToPixels = {
      px: 1,
      in: 96,
      cm: 37.8,
      mm: 3.78,
  };
  function convertPrintParameterToInches(parameter) {
      if (typeof parameter === 'undefined')
          return undefined;
      let pixels;
      if (helper_1.helper.isNumber(parameter)) {
          // Treat numbers as pixel values to be aligned with phantom's paperSize.
          pixels = /** @type {number} */ parameter;
      }
      else if (helper_1.helper.isString(parameter)) {
          const text = /** @type {string} */ parameter;
          let unit = text.substring(text.length - 2).toLowerCase();
          let valueText = '';
          if (unitToPixels.hasOwnProperty(unit)) {
              valueText = text.substring(0, text.length - 2);
          }
          else {
              // In case of unknown unit try to parse the whole parameter as number of pixels.
              // This is consistent with phantom's paperSize behavior.
              unit = 'px';
              valueText = text;
          }
          const value = Number(valueText);
          helper_1.assert(!isNaN(value), 'Failed to parse parameter value: ' + text);
          pixels = value * unitToPixels[unit];
      }
      else {
          throw new Error('page.pdf() Cannot handle parameter type: ' + typeof parameter);
      }
      return pixels / 96;
  }
  