Is it possible to use Puppeteer or any librarie with headless browser in functions?

You can include any NPM package from npmjs.com you want when deploying a Node.js function by including a package.json file. In it, you’d list your dependencies under dependencies like you would for any Node.js application. And, you’d arrange your function’s code so that your function directory in your project is a module (use exports.main = <your function>). See https://docs.digitalocean.com/products/functions/how-to/structure-projects/ in our docs for an example on arranging your project.

Your function directory’s contents must be within the 48 MB limit after your code and your dependencies are compressed. You’ll get an error at deploy time if you go over this limit.

We have a docs update coming soon that shows more examples of including NPM packages in Node.js functions, so keep an eye out for that.

Note that some NPM packages will require system libraries to be installed. Puppeteer is an example of this. Right now, we don’t include system libraries and CLI tools required by some NPM packages in our Node.js runtimes. We have plans to address this long term. We are always open to feedback about Functions and our other products, and you can provide it using our official feedback platform at https://ideas.digitalocean.com/.