Simple Puppeteer screenshot script

index.js

/*
If saving AWS creds locally they need to be in ~/.aws/credentials

[default]
aws_access_key_id = foo
aws_secret_access_key = bar
 */

const puppeteer = require('puppeteer');
const AWS = require('aws-sdk');
const s3 = new AWS.S3();
const bucket = 'BucketName';
const fileName = 'file-name-'+ unique() +'.pdf';

function unique() {
    return 'xxxxxxxxxxxx'.replace(/[x]/g, function(c) {
        var r = Math.random() * 16 | 0, v = c == 'x' ? r : (r & 0x3 | 0x8);
        return v.toString(16);
    });
}

(async () => {
    const browser = await puppeteer.launch();
    const page = await browser.newPage();

    await page.goto('http://localhost:8080/some-page', {
        waitUntil: 'networkidle2' // make sure all JS is loaded and all Ajax requests are done.
    });

    await page.emulateMedia('print'); // or screen

    const pdf = await page.pdf({
        fullPage: true,
        // landscape: true,
        format: 'Tabloid',
        printBackground: true,
        path: fileName
    });

    const params = {
        Bucket: bucket,
        Key: fileName,
        Body: pdf
    };

    // Put it into an S3 bucket
    await s3.putObject(params).promise();

    await browser.close();
})();