the example used in the readme does not work

[frankgreco]

The hello world example does not work. In fact, no website I've tried works. It's usually always panics.

./lightpanda-aarch64-macos --host 127.0.0.1 --port 9222
info(websocket): starting blocking worker to listen on 127.0.0.1:9222
info(server): accepting new conn...
info(server): client connected
info(browser): GET https://wikipedia.com/ 200
info(browser): fetch [https://wikipedia.com/portal/wikipedia.org/assets/js/index-2...](https://wikipedia.com/portal/wikipedia.org/assets/js/index-24c3e2ca18.js): http.Status.ok
info(browser): eval script portal/wikipedia.org/assets/js/index-24c3e2ca18.js: ReferenceError: location is not defined
info(browser): fetch [https://wikipedia.com/portal/wikipedia.org/assets/js/gt-ie9-...](https://wikipedia.com/portal/wikipedia.org/assets/js/gt-ie9-ce3fe8e88d.js): http.Status.ok
error(events): event handler error: error.JSExecCallback
info(events): event handler error try catch: TypeError: Cannot read properties of undefined (reading 'length')
info(server): close cmd, closing conn...
info(server): accepting new conn...
thread 5274880 panic: attempt to use null value
zsh: abort ./lightpanda-aarch64-macos --host 127.0.0.1 --port 9222

[krichprollsch]

Hello @frankgreco,
Thanks for the issue.
Indeed I can reproduce, something goes wrong on handling the client's disconnection.

But I get the list of the links correctly. Did you get them?

[frankgreco]

If I try to dump the page contents, I get a different error.

'use strict'

import puppeteer from 'puppeteer-core';

const browser = await puppeteer.connect({
  browserWSEndpoint: "ws://127.0.0.1:9222",
});

const context = await browser.createBrowserContext();
const page = await context.newPage();

await page.goto('https://wikipedia.com/');

console.log(await page.content());

await page.close();
await context.close();

❯ node index.mjs
file:///Users/frank/projects/superblocks/browser/node_modules/puppeteer-core/lib/esm/puppeteer/common/CallbackRegistry.js:77
            this._reject(callback, new TargetCloseError('Target closed'));
                                   ^

TargetCloseError: Protocol error (Runtime.callFunctionOn): Target closed
    at CallbackRegistry.clear (file:///Users/frank/projects/superblocks/browser/node_modules/puppeteer-core/lib/esm/puppeteer/common/CallbackRegistry.js:77:36)
    at CdpCDPSession._onClosed (file:///Users/frank/projects/superblocks/browser/node_modules/puppeteer-core/lib/esm/puppeteer/cdp/CDPSession.js:106:25)
    at #onClose (file:///Users/frank/projects/superblocks/browser/node_modules/puppeteer-core/lib/esm/puppeteer/cdp/Connection.js:171:21)
    at WebSocket.<anonymous> (file:///Users/frank/projects/superblocks/browser/node_modules/puppeteer-core/lib/esm/puppeteer/node/NodeWebSocketTransport.js:43:30)
    at callListener (/Users/frank/projects/superblocks/browser/node_modules/ws/lib/event-target.js:290:14)
    at WebSocket.onClose (/Users/frank/projects/superblocks/browser/node_modules/ws/lib/event-target.js:220:9)
    at WebSocket.emit (node:events:520:28)
    at WebSocket.emitClose (/Users/frank/projects/superblocks/browser/node_modules/ws/lib/websocket.js:272:10)
    at Socket.socketOnClose (/Users/frank/projects/superblocks/browser/node_modules/ws/lib/websocket.js:1341:15)
    at Socket.emit (node:events:520:28) {
  cause: ProtocolError
      at <instance_members_initializer> (file:///Users/frank/projects/superblocks/browser/node_modules/puppeteer-core/lib/esm/puppeteer/common/CallbackRegistry.js:97:14)
      at new Callback (file:///Users/frank/projects/superblocks/browser/node_modules/puppeteer-core/lib/esm/puppeteer/common/CallbackRegistry.js:101:16)
      at CallbackRegistry.create (file:///Users/frank/projects/superblocks/browser/node_modules/puppeteer-core/lib/esm/puppeteer/common/CallbackRegistry.js:20:26)
      at Connection._rawSend (file:///Users/frank/projects/superblocks/browser/node_modules/puppeteer-core/lib/esm/puppeteer/cdp/Connection.js:89:26)
      at CdpCDPSession.send (file:///Users/frank/projects/superblocks/browser/node_modules/puppeteer-core/lib/esm/puppeteer/cdp/CDPSession.js:66:33)
      at #evaluate (file:///Users/frank/projects/superblocks/browser/node_modules/puppeteer-core/lib/esm/puppeteer/cdp/ExecutionContext.js:359:50)
      at ExecutionContext.evaluate (file:///Users/frank/projects/superblocks/browser/node_modules/puppeteer-core/lib/esm/puppeteer/cdp/ExecutionContext.js:274:36)
      at IsolatedWorld.evaluate (file:///Users/frank/projects/superblocks/browser/node_modules/puppeteer-core/lib/esm/puppeteer/cdp/IsolatedWorld.js:97:30)
      at CdpFrame.evaluate (file:///Users/frank/projects/superblocks/browser/node_modules/puppeteer-core/lib/esm/puppeteer/api/Frame.js:345:43)
      at CdpFrame.<anonymous> (file:///Users/frank/projects/superblocks/browser/node_modules/puppeteer-core/lib/esm/puppeteer/util/decorators.js:101:27)
}

Node.js v22.6.0

❯ ./lightpanda-aarch64-macos --host 127.0.0.1 --port 9222
info(websocket): starting blocking worker to listen on 127.0.0.1:9222
info(server): accepting new conn...
info(server): client connected
info(browser): GET https://wikipedia.com/ 200
info(browser): fetch https://wikipedia.com/portal/wikipedia.org/assets/js/index-24c3e2ca18.js: http.Status.ok
info(browser): eval script portal/wikipedia.org/assets/js/index-24c3e2ca18.js: ReferenceError: location is not defined
info(browser): fetch https://wikipedia.com/portal/wikipedia.org/assets/js/gt-ie9-ce3fe8e88d.js: http.Status.ok
error(events): event handler error: error.JSExecCallback
info(events): event handler error try catch: TypeError: Cannot read properties of undefined (reading 'length')
info(server): close cmd, closing conn...
info(server): accepting new conn...
thread 5774907 panic: attempt to use null value
zsh: abort      ./lightpanda-aarch64-macos --host 127.0.0.1 --port 9222

[sanjomathew09]

'use strict';

import puppeteer from 'puppeteer-core';

async function main() {
try {
// Connect to the browser instance
const browser = await puppeteer.connect({
browserWSEndpoint: 'ws://127.0.0.1:9222', // WebSocket endpoint
});

// Create a new browser context (isolation)
const context = await browser.createIncognitoBrowserContext(); // Use incognito mode for a clean session

// Open a new page in the context
const page = await context.newPage();

// Navigate to the target URL
await page.goto('https://wikipedia.com/', {
  waitUntil: 'networkidle2', // Wait for network to be idle
});

// Extract the page content
const pageContent = await page.content();
console.log(pageContent);

// Clean up
await page.close(); // Close the page
await context.close(); // Close the browser context
await browser.disconnect(); // Disconnect from the browser

} catch (error) {
console.error('An error occurred:', error);
}
}

main();

[ManojBhamsagar-Draup]

Yes I'm also stuck with the same error:

const context = await browser.createBrowserContext();
^

TypeError: browser.createBrowserContext is not a function

At least, please provide a minimal example that works. Since this repo lacks documentation.