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Viewing file:     JSHandle.js (2.87 KB)      -rw-r--r--

/**
 * @license
 * Copyright 2019 Google Inc.
 * SPDX-License-Identifier: Apache-2.0
 */
import { JSHandle } from '../api/JSHandle.js';
import { debugError } from '../common/util.js';
import { valueFromRemoteObject } from './utils.js';
/**
 * @internal
 */
export class CdpJSHandle extends 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 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:' + 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;
    }
}
/**
 * @internal
 */
export 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.
        debugError(error);
    });
}
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