123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265
/// <reference types="./JSHandle.d.ts" />/** * Copyright 2019 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. */var __classPrivateFieldSet = (this && this.__classPrivateFieldSet) ||  function (receiver, state, value, kind, f) {    if (kind === "m") throw new TypeError("Private method is not writable");    if (kind === "a" && !f) {      throw new TypeError("Private accessor was defined without a setter");    }    if (      typeof state === "function"        ? receiver !== state || !f        : !state.has(receiver)    ) {      throw new TypeError(        "Cannot write private member to an object whose class did not declare it",      );    }    return (kind === "a"      ? f.call(receiver, value)      : f      ? f.value = value      : state.set(receiver, value)),      value;  };var __classPrivateFieldGet = (this && this.__classPrivateFieldGet) ||  function (receiver, state, kind, f) {    if (kind === "a" && !f) {      throw new TypeError("Private accessor was defined without a getter");    }    if (      typeof state === "function"        ? receiver !== state || !f        : !state.has(receiver)    ) {      throw new TypeError(        "Cannot read private member from an object whose class did not declare it",      );    }    return kind === "m"      ? f      : kind === "a"      ? f.call(receiver)      : f      ? f.value      : state.get(receiver);  };var _JSHandle_client,  _JSHandle_disposed,  _JSHandle_context,  _JSHandle_remoteObject;import { assert } from "../util/assert.js";import {  createJSHandle,  releaseObject,  valueFromRemoteObject,} from "./util.js";/** * Represents a reference to a JavaScript object. Instances can be created using * {@link Page.evaluateHandle}. * * Handles prevent the referenced JavaScript object from being garbage-collected * unless the handle is purposely {@link JSHandle.dispose | disposed}. JSHandles * are auto-disposed when their associated frame is navigated away or the parent * context gets destroyed. * * Handles can be used as arguments for any evaluation function such as * {@link Page.$eval}, {@link Page.evaluate}, and {@link Page.evaluateHandle}. * They are resolved to their referenced object. * * @example * * ```ts * const windowHandle = await page.evaluateHandle(() => window); * ``` * * @public */export class JSHandle {  /**   * @internal   */  constructor(context, client, remoteObject) {    _JSHandle_client.set(this, void 0);    _JSHandle_disposed.set(this, false);    _JSHandle_context.set(this, void 0);    _JSHandle_remoteObject.set(this, void 0);    __classPrivateFieldSet(this, _JSHandle_context, context, "f");    __classPrivateFieldSet(this, _JSHandle_client, client, "f");    __classPrivateFieldSet(this, _JSHandle_remoteObject, remoteObject, "f");  }  /**   * @internal   */  get client() {    return __classPrivateFieldGet(this, _JSHandle_client, "f");  }  /**   * @internal   */  get disposed() {    return __classPrivateFieldGet(this, _JSHandle_disposed, "f");  }  /**   * @returns The execution context the handle belongs to.   */  executionContext() {    return __classPrivateFieldGet(this, _JSHandle_context, "f");  }  /**   * Evaluates the given function with the current handle as its first argument.   *   * @see {@link ExecutionContext.evaluate} for more details.   */  async evaluate(pageFunction, ...args) {    return await this.executionContext().evaluate(pageFunction, this, ...args);  }  /**   * Evaluates the given function with the current handle as its first argument.   *   * @see {@link ExecutionContext.evaluateHandle} for more details.   */  async evaluateHandle(pageFunction, ...args) {    return await this.executionContext().evaluateHandle(      pageFunction,      this,      ...args,    );  }  async getProperty(propertyName) {    return this.evaluateHandle((object, propertyName) => {      return object[propertyName];    }, propertyName);  }  /**   * Gets a map of handles representing the properties of the current handle.   *   * @example   *   * ```ts   * const listHandle = await page.evaluateHandle(() => document.body.children);   * const properties = await listHandle.getProperties();   * const children = [];   * for (const property of properties.values()) {   *   const element = property.asElement();   *   if (element) {   *     children.push(element);   *   }   * }   * children; // holds elementHandles to all children of document.body   * ```   */  async getProperties() {    assert(__classPrivateFieldGet(this, _JSHandle_remoteObject, "f").objectId);    // We use Runtime.getProperties rather than iterative building because the    // iterative approach might create a distorted snapshot.    const response = await __classPrivateFieldGet(this, _JSHandle_client, "f")      .send("Runtime.getProperties", {        objectId:          __classPrivateFieldGet(this, _JSHandle_remoteObject, "f").objectId,        ownProperties: true,      });    const result = new Map();    for (const property of response.result) {      if (!property.enumerable || !property.value) {        continue;      }      result.set(        property.name,        createJSHandle(          __classPrivateFieldGet(this, _JSHandle_context, "f"),          property.value,        ),      );    }    return result;  }  /**   * @returns A vanilla object representing the serializable portions of the   * referenced object.   * @throws Throws if the object cannot be serialized due to circularity.   *   * @remarks   * If the object has a `toJSON` function, it **will not** be called.   */  async jsonValue() {    if (!__classPrivateFieldGet(this, _JSHandle_remoteObject, "f").objectId) {      return valueFromRemoteObject(        __classPrivateFieldGet(this, _JSHandle_remoteObject, "f"),      );    }    const value = await this.evaluate((object) => {      return object;    });    if (value === undefined) {      throw new Error("Could not serialize referenced object");    }    return value;  }  /**   * @returns Either `null` or the handle itself if the handle is an   * instance of {@link ElementHandle}.   */  asElement() {    return null;  }  /**   * Releases the object referenced by the handle for garbage collection.   */  async dispose() {    if (__classPrivateFieldGet(this, _JSHandle_disposed, "f")) {      return;    }    __classPrivateFieldSet(this, _JSHandle_disposed, true, "f");    await releaseObject(      __classPrivateFieldGet(this, _JSHandle_client, "f"),      __classPrivateFieldGet(this, _JSHandle_remoteObject, "f"),    );  }  /**   * Returns a string representation of the JSHandle.   *   * @remarks   * Useful during debugging.   */  toString() {    if (!__classPrivateFieldGet(this, _JSHandle_remoteObject, "f").objectId) {      return "JSHandle:" +        valueFromRemoteObject(          __classPrivateFieldGet(this, _JSHandle_remoteObject, "f"),        );    }    const type =      __classPrivateFieldGet(this, _JSHandle_remoteObject, "f").subtype ||      __classPrivateFieldGet(this, _JSHandle_remoteObject, "f").type;    return "JSHandle@" + type;  }  /**   * Provides access to the   * [Protocol.Runtime.RemoteObject](https://chromedevtools.github.io/devtools-protocol/tot/Runtime/#type-RemoteObject)   * backing this handle.   */  remoteObject() {    return __classPrivateFieldGet(this, _JSHandle_remoteObject, "f");  }}_JSHandle_client = new WeakMap(),  _JSHandle_disposed = new WeakMap(),  _JSHandle_context = new WeakMap(),  _JSHandle_remoteObject = new WeakMap();//# sourceMappingURL=JSHandle.js.map