Did this after encountering the follow error:

Puppeteer old Headless deprecation warning:
    In the near future `headless: true` will default to the new Headless mode
    for Chrome instead of the old Headless implementation. For more
    information, please see https://developer.chrome.com/articles/new-headless/.
    Consider opting in early by passing `headless: "new"` to `puppeteer.launch()`
    If you encounter any bugs, please report them to https://github.com/puppeteer/puppeteer/issues/new/choose.

Error opening browser
{}
TypeError: Cannot read properties of null (reading 'newPage')

If a popup parameter is set and the geojson string, parsed as an object, is a single item of type Point, render an opened popup.

If a popup is rendered, don't show the close button.

Add -P or --popup option to render an opened popup instead of a marker when GeoJSON string contains a single point

Add Handlebars custom helper for use with popup option

Add popup option

Don't show the market icon if showing popup instead.