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By default the memory limit in Node.js is 512MB.

This will cause FATAL ERROR- JS Allocation failed – process out of memory when processing large data files.

It can be avoided by increasing the memory limit.

See Command-line options for more details.

node --max-old-space-size=1024 server.js # increase to 1gb

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Webpack & Tailwind CSS Setup

Create your package.json

npm init -y

Create your src folder

Create a folder called src and add an empty index.js file. The code that webpack compiles goes in here including any Javascript modules and the main Tailwind file.

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puppeteer dependeces in ubuntu 18.04 (Bionic)

error while loading shared libraries: libnss3.so: cannot open shared object file: No such file or directory

sudo apt-get install libnss3

error while loading shared libraries: libXss.so.1: cannot open shared object file: No such file or directory

sudo apt-get install libxss1

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// Two ways to serve transparent GIF

var buf = new Buffer([
    0x47, 0x49, 0x46, 0x38, 0x39, 0x61, 0x01, 0x00, 0x01, 0x00, 
    0x80, 0x00, 0x00, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x2c, 
    0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x01, 0x00, 0x00, 0x02, 
    0x02, 0x44, 0x01, 0x00, 0x3b]);

res.send(buf, { 'Content-Type': 'image/gif' }, 200);

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import admin from "firebase-admin";



// initialize the admin
admin.initializeApp({
  credential: admin.credential.cert({
                projectId: project_id,
                clientEmail: client_email,
                privateKey: private_key

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import csv
import random

def generate_random_array(row, col):
    a = []
    for i in range(col):
        l = [i]
        for j in range(row):
            l.append(random.random())
        a.append(l)

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// We can just store the flow as a JSON. That is an array on mongoose. 

const sampleFlow = [
    {
        type: "trigger", //This is what triggers entry to the flow
        eventId: "random_auto_generated",
        eventName: "Change in customer attribute", //Other option might include customer submited a form, Performed an action
        //Other data
    },
    {

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#Test credit card numbers to use when developing with Stripe

4242424242424242 Visa

4012888888881881 Visa

4000056655665556 Visa (debit)

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0-mail.com
0815.ru
0clickemail.com
0wnd.net
0wnd.org
10minutemail.com
20minutemail.com
2prong.com
30minutemail.com
3d-painting.com

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var mediaJSON = { "categories" : [ { "name" : "Movies",
        "videos" : [ 
		    { "description" : "Big Buck Bunny tells the story of a giant rabbit with a heart bigger than himself. When one sunny day three rodents rudely harass him, something snaps... and the rabbit ain't no bunny anymore! In the typical cartoon tradition he prepares the nasty rodents a comical revenge.\n\nLicensed under the Creative Commons Attribution license\nhttp://www.bigbuckbunny.org",
              "sources" : [ "http://commondatastorage.googleapis.com/gtv-videos-bucket/sample/BigBuckBunny.mp4" ],
              "subtitle" : "By Blender Foundation",
              "thumb" : "images/BigBuckBunny.jpg",
              "title" : "Big Buck Bunny"
            },
            { "description" : "The first Blender Open Movie from 2006",
              "sources" : [ "http://commondatastorage.googleapis.com/gtv-videos-bucket/sample/ElephantsDream.mp4" ],