feature: ability to keep the browser window open (for testing & debugging)

[zsolt-dev]

Problem:

I use the programatic API to generate a PDF from a markdown variable. When I generate PDFs, it would help me to analyse the HTML and debug issues / play around in the browser devtools console.

But setting this just opens to browser for a split second.

launch_options: {
        headless: false,
        devtools: true,
}

Solution:

ability to provide a setting that would keep the browser open.

[simonhaenisch]

Sry for the late response due to sickness.

There's a --devtools CLI flag that does exactly this (without the headless: false which iirc is implied when devtools is enabled), and last time i tried it worked, but it's been a long while.

Just looking into it and I think the problem is that here it's checking only the config option but not the launch_options:

md-to-pdf/src/lib/generate-output.ts

Lines 104 to 105 in 7e0b9fc

	if (config.devtools) {
	await new Promise((resolve) => page.on('close', resolve));

Should change this to access the property from the Puppeteer browser class I guess, but in the meantime you should be able to get it to work by setting devtools: true in the config that you pass to the mdToPdf function call.