puppeteer-core
Version:
A high-level API to control headless Chrome over the DevTools Protocol
106 lines • 3.16 kB
JavaScript
"use strict";
/**
* @license
* Copyright 2019 Google Inc.
* SPDX-License-Identifier: Apache-2.0
*/
Object.defineProperty(exports, "__esModule", { value: true });
exports.CdpJSHandle = void 0;
exports.releaseObject = releaseObject;
const JSHandle_js_1 = require("../api/JSHandle.js");
const util_js_1 = require("../common/util.js");
const utils_js_1 = require("./utils.js");
/**
* @internal
*/
class CdpJSHandle extends JSHandle_js_1.JSHandle {
#disposed = false;
#remoteObject;
#world;
constructor(world, remoteObject) {
super();
this.#world = world;
this.#remoteObject = remoteObject;
}
get disposed() {
return this.#disposed;
}
get realm() {
return this.#world;
}
get client() {
return this.realm.environment.client;
}
async jsonValue() {
if (!this.#remoteObject.objectId) {
return (0, utils_js_1.valueFromRemoteObject)(this.#remoteObject);
}
const value = await this.evaluate(object => {
return object;
});
if (value === undefined) {
throw new Error('Could not serialize referenced object');
}
return value;
}
/**
* Either `null` or the handle itself if the handle is an
* instance of {@link ElementHandle}.
*/
asElement() {
return null;
}
async dispose() {
if (this.#disposed) {
return;
}
this.#disposed = true;
await releaseObject(this.client, this.#remoteObject);
}
toString() {
if (!this.#remoteObject.objectId) {
return 'JSHandle:' + (0, utils_js_1.valueFromRemoteObject)(this.#remoteObject);
}
const type = this.#remoteObject.subtype || this.#remoteObject.type;
return 'JSHandle@' + type;
}
get id() {
return this.#remoteObject.objectId;
}
remoteObject() {
return this.#remoteObject;
}
async getProperties() {
// We use Runtime.getProperties rather than iterative version for
// improved performance as it allows getting everything at once.
const response = await this.client.send('Runtime.getProperties', {
objectId: this.#remoteObject.objectId,
ownProperties: true,
});
const result = new Map();
for (const property of response.result) {
if (!property.enumerable || !property.value) {
continue;
}
result.set(property.name, this.#world.createCdpHandle(property.value));
}
return result;
}
}
exports.CdpJSHandle = CdpJSHandle;
/**
* @internal
*/
async function releaseObject(client, remoteObject) {
if (!remoteObject.objectId) {
return;
}
await client
.send('Runtime.releaseObject', { objectId: remoteObject.objectId })
.catch(error => {
// Exceptions might happen in case of a page been navigated or closed.
// Swallow these since they are harmless and we don't leak anything in this case.
(0, util_js_1.debugError)(error);
});
}
//# sourceMappingURL=JSHandle.js.map