I want to prevent opening dev tools from puppeteer's chromium instance.
Unfortunately emitted page is of 'other' type so it cannot be closed by page.close method.

Here's my question, is there any way to do it by dev protocol or anything like that? 

```
browser.on('targetcreated', (target) => {
    if (target['_targetInfo']['type'] === 'other') {
        target.page().then(currPage => {
            currPage.close();
        });
    }
});

```

Heard about --disable-dev-tools flag but I think it does not work anymore.