devtools/build/commands/closeWindow.js

A Chrome DevTools protocol binding that maps WebDriver commands into Chrome DevTools commands using Puppeteer

import { v4 as uuidv4 } from 'uuid';
import { sleep } from '../utils.js';
/**
 * The Close Window command closes the current top-level browsing context.
 * Once done, if there are no more top-level browsing contexts open,
 * the WebDriver session itself is closed.
 *
 * @alias browser.closeWindow
 * @see https://w3c.github.io/webdriver/#dfn-close-window
 */
export default async function closeWindow() {
    delete this.currentFrame;
    const page = this.getPageHandle();
    await page.close();
    await sleep(100);
    const handles = [...this.windows.keys()];
    this.currentWindowHandle = handles[handles.length - 1];
    if (!this.currentWindowHandle) {
        const page = await this.browser.newPage();
        const newWindowHandle = uuidv4();
        this.windows.set(newWindowHandle, page);
        this.currentWindowHandle = newWindowHandle;
    }
    const newPage = this.getPageHandle();
    await newPage.bringToFront();
    return this.currentWindowHandle;
}