How to download file with puppeteer using headless: true?

Question

I\'ve been running the following code in order to download a csv file from the website http://niftyindices.com/resources/holiday-calendar:

Answer 1

The problem is that the browser closes before download finished.

You can get the filesize and the name of the file from the response, and then use a watch script to check filesize from downloaded file, in order to close the browser.

This is an example:

const filename = ;
const dir = ;

// Download and wait for download
    await Promise.all([
        page.click('#DownloadFile'),
       // Event on all responses
        page.on('response', response => {
            // If response has a file on it
            if (response._headers['content-disposition'] === `attachment;filename=${filename}`) {
               // Get the size
                console.log('Size del header: ', response._headers['content-length']);
                // Watch event on download folder or file
                 fs.watchFile(dir, function (curr, prev) {
                   // If current size eq to size from response then close
                    if (parseInt(curr.size) === parseInt(response._headers['content-length'])) {
                        browser.close();
                        this.close();
                    }
                });
            }
        })
    ]);

Even that the way of searching in response can be improved though I hope you'll find this usefull.